《深入理解Java虛擬機器》- Java虛擬機器是如何載入Java類的?
阿新 • • 發佈：2019-08-16
Java虛擬機器是如何載入Java類的？ 這個問題也就是面試常問到的Java類載入機制。在年初面試百戰之後，菜鳥喜鵲也是能把這流程倒背如流啊！但是，也只是字面上的背誦，根本就是像上學時背書考試一樣。
tonight ！ 我們把它對映到實戰裡，看看如何用程式碼說明這個流程。
ready! go! ----------------在這之前還是搞點理論吧，不然又要先去百度載入機制流程了。
一、類載入機制（理論部分）
類載入機制有三大過程：載入、連結、初始化。其中連結又細分為驗證、準備及解析。
Java語言的型別分為兩大類：基本型別和引用型別。Java的基本型別是由Java虛擬機器預先定義好的。而引用型別又分為：陣列類、類、介面、泛型引數。在JVM中，只存在陣列類、類、介面三類，而陣列類是直接由Java虛擬機器直接生成的，其他兩類則有位元組流而來。
位元組流又是怎麼來呢？最常見的還是從位元組碼檔案而來（還可以從網路等而來）。所以，我就以位元組碼檔案分析一下載入機制。
1.載入
載入是指查詢位元組流，並據此建立類的過程。對於陣列類來說，它們是可以由Java虛擬機器直接生成。而其他兩類，卻需要藉助類載入器，Java虛擬機器才能完成查詢位元組流的工作。
類載入器與類的關係就像是UI與效果圖一樣，需要將業務需求翻譯成效果圖。美麗的UI就是類載入器，效果圖就是類。
類載入器有一個模型：雙親委派。
雙親委派模型是每次收到類載入請求時，先將請求委派給父類載入器完成，如果父類載入器無法完成載入，那麼子類嘗試自己載入
類載入器分為三種，啟動類載入器、擴充套件類載入器、應用類載入器。
其中，
啟動類載入器（Application ClassLoader）是負責載入最為基礎、最為重要的類，即載入<JAVA_HOME>\lib目錄下核心庫
擴充套件類載入器的父類載入器是啟動類載入器，擴充套件類載入器負責載入相對次要、但又通用的類，即載入<JAVA_HOME>\lib\ext目錄下擴充套件包
應用類載入器的父類載入器是擴充套件類載入器，應用類載入器負責載入應用程式路徑下的類，即使用者路徑(classpath)上指定的類庫
這三者類載入器的關係可以這樣描述：
每當類載入器接收到載入請求時，它會先將請求轉發給父類載入器，在父類載入器中沒有找到需要的類的情況下，該載入器才會嘗試去載入。
比如，應用載入器接收到載入請求， 會先去找父類載入器（擴充套件類載入器）裡有沒有需要的類，但該擴充套件類載入器頂頭還有父類載入器（啟動類載入器）， 所以還要去啟動類載入器中查詢是否存在需要的類，如果不存在，那擴充套件類載入器就會自己載入需要的類，然後把引用傳遞給應用載入器。
類載入器還有一個功能，就是提供名稱空間的作用。
在Java虛擬機器中，類的唯一性是由類載入器例項以及類的全名一同確定的。即便是同一串位元組流，經過不同的類載入器載入，也會得到兩個不同的類。（這裡可以讀者自己實現一下，用兩個擴充套件類載入器載入同一個類，然後列印一下類資訊就可以驗證了）
2.連結
連結：將建立成的類合併至Java虛擬機器中，使之能夠執行的過程。（這裡是下面程式碼要驗證一個步驟）
連結分為驗證、準備、解析。
驗證的目的是為了讓被載入的類能夠滿足Java虛擬機器的約束。（關於約束條件，今天暫時不講。）
準備的目的是為了被載入類的靜態欄位分配記憶體。（僅僅是分配記憶體，並沒有在記憶體中寫東西）除此之外，有些Java虛擬機器還會用來實現虛方法的動態繫結的方法表。
下一步就是我們連結的重要步驟--解析
對於一個方法的呼叫，編譯器會解析一個符號，這個符號能夠無歧義地定位到具體的目標上。這個符號包含目標方法所在類的名字、目標方法的名字、接收的引數型別以及返回值型別的符號引用。
如果符號引用指向一個未被載入的類、欄位、方法，那麼這個解析將觸發載入功能。
3.初始化
初始化：為標記為常量值的欄位賦值，以及執行<clinit>方法的過程。
只有初始化完成之後，類才正式成為可執行的狀態。
那初始化這個步驟是什麼時候執行呢？
JVM規範枚舉了下述多種觸發初始化的情況：
理論部分講解完了。（參考連結：https://time.geekbang.org/column/article/11523）
二、類載入機制（Linux檢視位元組碼）
在這，主要是因為網上都是一大串的理論描述，看得也是半信半疑。還不如拿出程式碼來，讓自己也心服口服了。
talk is cheap,show the code!
1.classloader
輸出如下：
結果很驚人，為什麼父類載入器的父類載入器（我自己取名為爺爺類載入器。。），照理論來說，應該列印的是bootstrapClassLoader。 其實是它隱身了。貼一下程式碼裡的一段註釋：
* Returns the parent class loader for delegation. Some implementations may
* use <tt>null</tt> to represent the bootstrap class loader. This method
* will return <tt>null</tt> in such implementations if this class loader's
* parent is the bootstrap class loader.
翻譯黃色的句子就是：如果父類載入器是啟動類載入器，則將返回null
但還是沒解決怎麼找bootstrapClassLoader啊。
它實際上不是 java.lang.ClassLoader的子類，而是由JVM自身實現的，我們可以通過這個方法得到實現的類路徑。
URL[] urls=sun.misc.Launcher.getBootstrapClassPath().getURLs();
2.連結
3.初始化
1.編譯的單例類：Singleton.java
public class Singleton{
private Singleton(){}
private static class LazyHolder{
static final Singleton INSTANCE = new Singleton();
static{
System.out.println("LazyHolder.<clinit>");
}
}
public static Object getInstance(boolean flag){
if(flag) return new LazyHolder[2];
return LazyHolder.INSTANCE;
}
public static void main(String... args){
System.out.println("---");
getInstance(true);
System.out.println("---");
getInstance(false);
}
}
2.編譯並執行
[root@localhost tmp3]# javac Singleton.java [root@localhost tmp3]# java Singleton --- --- LazyHolder.<clinit>
3.檢視位元組碼檔案（用的新指令：java -verbose:class Singleton）
結合2,3的輸出，我想，我該講點啥。
在兩段“-----”中，如果沒有列印載入資訊，我們就以為是連續輸出了。但是並沒有。根據載入資訊來看，中間還會載入Singleton$LazyHolder這個內部類，而這一步，對應的就是getInstance(true)；。說明了啥？說明了前面理論部分的連結的最後一句話：
如果符號引用指向一個未被載入的類、欄位、方法，那麼這個解析將觸發載入功能。
這裡注意的是，僅僅呼叫了載入功能而已，這裡只完成了建立類而已，並沒有讓它繼續進行連結和初始化功能。所以在這裡，也就不會出現列印“LazyHolder.<clinit>”的字樣。
當使用到了getInstance(true)的時候，由於需要使用到“LazyHolder.INSTANCE;”這個靜態常量，而它又與new 構造器方法相連通，此時就滿足了理論中初始化的解釋：
2.當遇到用以新建目標類例項的new指令時，初始化new指令的目標類
3.當遇到訪問靜態欄位的指令時，初始化該靜態欄位所在的類
在這，大家應該也有疑問：getInstance(false)的時候也有new啊。但是，false時候的new，只是new陣列，數組裡裝的只是載入時候生成的類引用。
大家還可以看下面class位元組碼就知道，註釋那裡就標記著很清楚是類引用而已。
Singleton.class
public static java.lang.Object getInstance(boolean);
descriptor: (Z)Ljava/lang/Object;
flags: ACC_PUBLIC, ACC_STATIC
Code:
stack=1, locals=1, args_size=1
0: iload_0
1: ifeq 9
4: iconst_2
5: anewarray #3 // class Singleton$LazyHolder
8: areturn
9: getstatic #4 // Field Singleton$LazyHolder.INSTANCE:LSingleton;
12: areturn
LineNumberTable:
line 11: 0
line 12: 9
StackMapTable: number_of_entries = 1
frame_type = 9 /* same */
public static void main(java.lang.String...);
descriptor: ([Ljava/lang/String;)V
flags: ACC_PUBLIC, ACC_STATIC, ACC_VARARGS
Code:
stack=2, locals=1, args_size=1
0: getstatic #5 // Field java/lang/System.out:Ljava/io/PrintStream;
3: ldc #6 // String ---
5: invokevirtual #7 // Method java/io/PrintStream.println:(Ljava/lang/String;)V
8: iconst_1
9: invokestatic #8 // Method getInstance:(Z)Ljava/lang/Object;
12: pop
13: getstatic #5 // Field java/lang/System.out:Ljava/io/PrintStream;
16: ldc #6 // String ---
18: invokevirtual #7 // Method java/io/PrintStream.println:(Ljava/lang/String;)V
21: iconst_0
22: invokestatic #8 // Method getInstance:(Z)Ljava/lang/Object;
25: pop
26: return
LineNumberTable:
line 15: 0
line 16: 8
line 17: 13
line 18: 21
line 19: 26
Singleton(Singleton$1);
descriptor: (LSingleton$1;)V
flags: ACC_SYNTHETIC
Code:
stack=1, locals=2, args_size=2
0: aload_0
1: invokespecial #1 // Method "<init>":()V
4: return
LineNumberTable:
line 1: 0
}
可以看到，在getInstance中，那麼#3 和#4 對應的是啥
現在，
看了例子之後，大家應該也對類載入機制有了一點點了解了吧。
附：java -verbose:class Singleton 顯示的全部資訊
1 [root@localhost tmp3]# java -verbose:class Singleton 2 [Opened /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 3 [Loaded java.lang.Object from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 4 [Loaded java.io.Serializable from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 5 [Loaded java.lang.Comparable from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 6 [Loaded java.lang.CharSequence from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 7 [Loaded java.lang.String from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 8 [Loaded java.lang.reflect.AnnotatedElement from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 9 [Loaded java.lang.reflect.GenericDeclaration from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 10 [Loaded java.lang.reflect.Type from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 11 [Loaded java.lang.Class from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 12 [Loaded java.lang.Cloneable from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 13 [Loaded java.lang.ClassLoader from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 14 [Loaded java.lang.System from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 15 [Loaded java.lang.Throwable from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 16 [Loaded java.lang.Error from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 17 [Loaded java.lang.ThreadDeath from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 18 [Loaded java.lang.Exception from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 19 [Loaded java.lang.RuntimeException from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 20 [Loaded java.lang.SecurityManager from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 21 [Loaded java.security.ProtectionDomain from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 22 [Loaded java.security.AccessControlContext from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 23 [Loaded java.security.SecureClassLoader from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 24 [Loaded java.lang.ReflectiveOperationException from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 25 [Loaded java.lang.ClassNotFoundException from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 26 [Loaded java.lang.LinkageError from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 27 [Loaded java.lang.NoClassDefFoundError from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 28 [Loaded java.lang.ClassCastException from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 29 [Loaded java.lang.ArrayStoreException from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 30 [Loaded java.lang.VirtualMachineError from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 31 [Loaded java.lang.OutOfMemoryError from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 32 [Loaded java.lang.StackOverflowError from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 33 [Loaded java.lang.IllegalMonitorStateException from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 34 [Loaded java.lang.ref.Reference from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 35 [Loaded java.lang.ref.SoftReference from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 36 [Loaded java.lang.ref.WeakReference from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 37 [Loaded java.lang.ref.FinalReference from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 38 [Loaded java.lang.ref.PhantomReference from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 39 [Loaded sun.misc.Cleaner from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 40 [Loaded java.lang.ref.Finalizer from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 41 [Loaded java.lang.Runnable from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 42 [Loaded java.lang.Thread from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 43 [Loaded java.lang.Thread$UncaughtExceptionHandler from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 44 [Loaded java.lang.ThreadGroup from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 45 [Loaded java.util.Map from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 46 [Loaded java.util.Dictionary from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 47 [Loaded java.util.Hashtable from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 48 [Loaded java.util.Properties from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 49 [Loaded java.lang.reflect.AccessibleObject from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 50 [Loaded java.lang.reflect.Member from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 51 [Loaded java.lang.reflect.Field from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 52 [Loaded java.lang.reflect.Parameter from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 53 [Loaded java.lang.reflect.Executable from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 54 [Loaded java.lang.reflect.Method from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 55 [Loaded java.lang.reflect.Constructor from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 56 [Loaded sun.reflect.MagicAccessorImpl from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 57 [Loaded sun.reflect.MethodAccessor from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 58 [Loaded sun.reflect.MethodAccessorImpl from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 59 [Loaded sun.reflect.ConstructorAccessor from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 60 [Loaded sun.reflect.ConstructorAccessorImpl from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 61 [Loaded sun.reflect.DelegatingClassLoader from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 62 [Loaded sun.reflect.ConstantPool from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 63 [Loaded sun.reflect.FieldAccessor from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 64 [Loaded sun.reflect.FieldAccessorImpl from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 65 [Loaded sun.reflect.UnsafeFieldAccessorImpl from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 66 [Loaded sun.reflect.UnsafeStaticFieldAccessorImpl from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 67 [Loaded java.lang.annotation.Annotation from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 68 [Loaded sun.reflect.CallerSensitive from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 69 [Loaded java.lang.invoke.MethodHandle from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 70 [Loaded java.lang.invoke.DirectMethodHandle from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 71 [Loaded java.lang.invoke.MemberName from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 72 [Loaded java.lang.invoke.MethodHandleNatives from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 73 [Loaded java.lang.invoke.LambdaForm from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 74 [Loaded java.lang.invoke.MethodType from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 75 [Loaded java.lang.BootstrapMethodError from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 76 [Loaded java.lang.invoke.CallSite from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 77 [Loaded java.lang.invoke.ConstantCallSite from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 78 [Loaded java.lang.invoke.MutableCallSite from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 79 [Loaded java.lang.invoke.VolatileCallSite from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 80 [Loaded java.lang.Appendable from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 81 [Loaded java.lang.AbstractStringBuilder from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 82 [Loaded java.lang.StringBuffer from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 83 [Loaded java.lang.StringBuilder from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 84 [Loaded sun.misc.Unsafe from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 85 [Loaded java.lang.AutoCloseable from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 86 [Loaded java.io.Closeable from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 87 [Loaded java.io.InputStream from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 88 [Loaded java.io.ByteArrayInputStream from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 89 [Loaded java.io.File from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 90 [Loaded java.net.URLClassLoader from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 91 [Loaded java.net.URL from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 92 [Loaded java.util.jar.Manifest from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 93 [Loaded sun.misc.Launcher from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 94 [Loaded sun.misc.Launcher$AppClassLoader from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 95 [Loaded sun.misc.Launcher$ExtClassLoader from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 96 [Loaded java.security.CodeSource from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 97 [Loaded java.lang.StackTraceElement from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 98 [Loaded java.nio.Buffer from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 99 [Loaded java.lang.Boolean from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 100 [Loaded java.lang.Character from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 101 [Loaded java.lang.Number from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 102 [Loaded java.lang.Float from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 103 [Loaded java.lang.Double from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 104 [Loaded java.lang.Byte from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 105 [Loaded java.lang.Short from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 106 [Loaded java.lang.Integer from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 107 [Loaded java.lang.Long from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 108 [Loaded java.lang.NullPointerException from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 109 [Loaded java.lang.ArithmeticException from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 110 [Loaded java.io.ObjectStreamField from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 111 [Loaded java.util.Comparator from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 112 [Loaded java.lang.String$CaseInsensitiveComparator from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 113 [Loaded java.security.Guard from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 114 [Loaded java.security.Permission from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 115 [Loaded java.security.BasicPermission from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 116 [Loaded java.lang.RuntimePermission from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 117 [Loaded java.security.AccessController from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 118 [Loaded java.lang.reflect.ReflectPermission from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 119 [Loaded java.security.PrivilegedAction from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 120 [Loaded sun.reflect.ReflectionFactory$GetReflectionFactoryAction from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 121 [Loaded java.security.cert.Certificate from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 122 [Loaded java.lang.Iterable from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 123 [Loaded java.util.Collection from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 124 [Loaded java.util.List from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 125 [Loaded java.util.RandomAccess from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 126 [Loaded java.util.AbstractCollection from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 127 [Loaded java.util.AbstractList from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 128 [Loaded java.util.Vector from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 129 [Loaded java.util.Stack from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 130 [Loaded sun.reflect.ReflectionFactory from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 131 [Loaded java.lang.ref.Reference$Lock from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 132 [Loaded java.lang.ref.Reference$ReferenceHandler from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 133 [Loaded java.lang.InterruptedException from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 134 [Loaded java.util.ArrayList from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 135 [Loaded java.util.Collections from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 136 [Loaded java.util.Set from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 137 [Loaded java.util.AbstractSet from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 138 [Loaded java.util.Collections$EmptySet from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 139 [Loaded java.util.Collections$EmptyList from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 140 [Loaded java.util.AbstractMap from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 141 [Loaded java.util.Collections$EmptyMap from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 142 [Loaded java.util.Collections$UnmodifiableCollection from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 143 [Loaded java.util.Collections$UnmodifiableList from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 144 [Loaded java.util.Collections$UnmodifiableRandomAccessList from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 145 [Loaded java.lang.ref.ReferenceQueue from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 146 [Loaded java.lang.ref.ReferenceQueue$Null from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 147 [Loaded java.lang.ref.ReferenceQueue$Lock from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 148 [Loaded sun.misc.JavaLangRefAccess from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 149 [Loaded java.lang.ref.Reference$1 from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 150 [Loaded sun.misc.SharedSecrets from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 151 [Loaded java.lang.IncompatibleClassChangeError from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 152 [Loaded java.lang.NoSuchMethodError from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 153 [Loaded sun.reflect.Reflection from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 154 [Loaded java.util.HashMap from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 155 [Loaded java.util.Map$Entry from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 156 [Loaded java.util.HashMap$Node from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 157 [Loaded sun.misc.VM from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 158 [Loaded java.util.Hashtable$Entry from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 159 [Loaded java.lang.Math from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 160 [Loaded java.lang.ref.Finalizer$FinalizerThread from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 161 [Loaded java.nio.charset.Charset from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 162 [Loaded java.nio.charset.spi.CharsetProvider from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 163 [Loaded sun.nio.cs.FastCharsetProvider from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 164 [Loaded sun.nio.cs.StandardCharsets from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 165 [Loaded sun.util.PreHashedMap from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 166 [Loaded sun.nio.cs.StandardCharsets$Aliases from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 167 [Loaded sun.nio.cs.StandardCharsets$Classes from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 168 [Loaded sun.nio.cs.StandardCharsets$Cache from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 169 [Loaded java.lang.ThreadLocal from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 170 [Loaded java.util.concurrent.atomic.AtomicInteger from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 171 [Loaded java.lang.Class$3 from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 172 [Loaded java.lang.Class$ReflectionData from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 173 [Loaded java.lang.Class$Atomic from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 174 [Loaded sun.reflect.generics.repository.AbstractRepository from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 175 [Loaded sun.reflect.generics.repository.GenericDeclRepository from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 176 [Loaded sun.reflect.generics.repository.ClassRepository from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 177 [Loaded java.lang.Class$AnnotationData from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 178 [Loaded sun.reflect.annotation.AnnotationType from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 179 [Loaded java.util.WeakHashMap from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 180 [Loaded java.lang.ClassValue$ClassValueMap from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 181 [Loaded java.lang.reflect.Modifier from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 182 [Loaded sun.reflect.LangReflectAccess from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 183 [Loaded java.lang.reflect.ReflectAccess from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 184 [Loaded java.util.Arrays from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 185 [Loaded sun.nio.cs.HistoricallyNamedCharset from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 186 [Loaded sun.nio.cs.Unicode from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 187 [Loaded sun.nio.cs.UTF_8 from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 188 [Loaded java.lang.Class$1 from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 189 [Loaded sun.reflect.ReflectionFactory$1 from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 190 [Loaded sun.reflect.NativeConstructorAccessorImpl from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 191 [Loaded sun.reflect.DelegatingConstructorAccessorImpl from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 192 [Loaded java.lang.StringCoding from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 193 [Loaded java.lang.ThreadLocal$ThreadLocalMap from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 194 [Loaded java.lang.ThreadLocal$ThreadLocalMap$Entry from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 195 [Loaded java.lang.StringCoding$StringDecoder from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 196 [Loaded sun.nio.cs.ArrayDecoder from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 197 [Loaded java.nio.charset.CharsetDecoder from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 198 [Loaded sun.nio.cs.UTF_8$Decoder from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 199 [Loaded java.nio.charset.CodingErrorAction from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 200 [Loaded java.util.Hashtable$EntrySet from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 201 [Loaded java.util.Collections$SynchronizedCollection from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 202 [Loaded java.util.Collections$SynchronizedSet from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 203 [Loaded java.util.Objects from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 204 [Loaded java.util.Enumeration from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 205 [Loaded java.util.Iterator from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 206 [Loaded java.util.Hashtable$Enumerator from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 207 [Loaded java.lang.Runtime from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 208 [Loaded sun.misc.Version from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 209 [Loaded java.io.FileInputStream from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 210 [Loaded java.io.FileDescriptor from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 211 [Loaded sun.misc.JavaIOFileDescriptorAccess from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 212 [Loaded java.io.FileDescriptor$1 from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 213 [Loaded java.io.Flushable from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 214 [Loaded java.io.OutputStream from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 215 [Loaded java.io.FileOutputStream from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 216 [Loaded java.io.FilterInputStream from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 217 [Loaded java.io.BufferedInputStream from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 218 [Loaded java.util.concurrent.atomic.AtomicReferenceFieldUpdater from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 219 [Loaded java.util.concurrent.atomic.AtomicReferenceFieldUpdater$AtomicReferenceFieldUpdaterImpl from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 220 [Loaded java.security.PrivilegedExceptionAction from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 221 [Loaded java.util.concurrent.atomic.AtomicReferenceFieldUpdater$AtomicReferenceFieldUpdaterImpl$1 from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 222 [Loaded sun.reflect.misc.ReflectUtil from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 223 [Loaded java.io.FilterOutputStream from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 224 [Loaded java.io.PrintStream from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 225 [Loaded java.io.BufferedOutputStream from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 226 [Loaded java.io.Writer from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 227 [Loaded java.io.OutputStreamWriter from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 228 [Loaded sun.nio.cs.StreamEncoder from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 229 [Loaded sun.security.action.GetPropertyAction from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 230 [Loaded sun.nio.cs.ArrayEncoder from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 231 [Loaded java.nio.charset.CharsetEncoder from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 232 [Loaded sun.nio.cs.UTF_8$Encoder from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 233 [Loaded java.nio.ByteBuffer from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 234 [Loaded java.nio.HeapByteBuffer from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 235 [Loaded java.nio.Bits from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 236 [Loaded java.nio.ByteOrder from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 237 [Loaded java.util.concurrent.atomic.AtomicLong from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 238 [Loaded sun.misc.JavaNioAccess from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 239 [Loaded java.nio.Bits$1 from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 240 [Loaded java.io.BufferedWriter from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 241 [Loaded java.io.DefaultFileSystem from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 242 [Loaded java.io.FileSystem from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 243 [Loaded java.io.UnixFileSystem from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 244 [Loaded java.io.ExpiringCache from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 245 [Loaded java.util.LinkedHashMap from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 246 [Loaded java.io.ExpiringCache$1 from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 247 [Loaded java.lang.Enum from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 248 [Loaded java.io.File$PathStatus from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 249 [Loaded java.nio.file.Watchable from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 250 [Loaded java.nio.file.Path from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 251 [Loaded java.lang.StringCoding$StringEncoder from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 252 [Loaded java.lang.ClassLoader$3 from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 253 [Loaded java.io.ExpiringCache$Entry from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 254 [Loaded java.util.LinkedHashMap$Entry from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 255 [Loaded java.lang.ClassLoader$NativeLibrary from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 256 [Loaded java.lang.Terminator from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 257 [Loaded sun.misc.SignalHandler from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 258 [Loaded java.lang.Terminator$1 from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 259 [Loaded sun.misc.Signal from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 260 [Loaded sun.misc.NativeSignalHandler from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 261 [Loaded java.lang.Integer$IntegerCache from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 262 [Loaded sun.misc.OSEnvironment from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 263 [Loaded sun.misc.JavaLangAccess from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 264 [Loaded java.lang.System$2 from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 265 [Loaded java.lang.IllegalArgumentException from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 266 [Loaded java.lang.Compiler from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 267 [Loaded java.lang.Compiler$1 from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 268 [Loaded java.net.URLStreamHandlerFactory from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 269 [Loaded sun.misc.Launcher$Factory from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 270 [Loaded sun.security.util.Debug from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 271 [Loaded java.lang.ClassLoader$ParallelLoaders from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 272 [Loaded java.util.WeakHashMap$Entry from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 273 [Loaded java.util.Collections$SetFromMap from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 274 [Loaded java.util.WeakHashMap$KeySet from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 275 [Loaded sun.misc.JavaNetAccess from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 276 [Loaded java.net.URLClassLoader$7 from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 277 [Loaded java.util.StringTokenizer from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 278 [Loaded sun.misc.Launcher$ExtClassLoader$1 from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 279 [Loaded sun.misc.MetaIndex from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 280 [Loaded java.lang.Readable from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 281 [Loaded java.io.Reader from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 282 [Loaded java.io.BufferedReader from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 283 [Loaded java.io.InputStreamReader from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 284 [Loaded java.io.FileReader from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 285 [Loaded sun.nio.cs.StreamDecoder from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 286 [Loaded java.nio.CharBuffer from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 287 [Loaded java.nio.HeapCharBuffer from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 288 [Loaded java.nio.charset.CoderResult from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 289 [Loaded java.nio.charset.CoderResult$Cache from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 290 [Loaded java.nio.charset.CoderResult$1 from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 291 [Loaded java.nio.charset.CoderResult$2 from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 292 [Loaded java.lang.reflect.Array from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 293 [Loaded java.util.HashMap$TreeNode from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 294 [Loaded java.io.FileInputStream$1 from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 295 [Loaded sun.net.www.ParseUtil from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 296 [Loaded java.util.BitSet from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 297 [Loaded java.util.Locale from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 298 [Loaded sun.util.locale.LocaleObjectCache from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 299 [Loaded java.util.Locale$Cache from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 300 [Loaded java.util.concurrent.ConcurrentMap from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 301 [Loaded java.util.concurrent.ConcurrentHashMap from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 302 [Loaded java.util.concurrent.locks.Lock from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 303 [Loaded java.util.concurrent.locks.ReentrantLock from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 304 [Loaded java.util.concurrent.ConcurrentHashMap$Segment from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 305 [Loaded java.util.concurrent.ConcurrentHashMap$Node from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 306 [Loaded java.util.concurrent.ConcurrentHashMap$CounterCell from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 307 [Loaded java.util.concurrent.ConcurrentHashMap$CollectionView from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 308 [Loaded java.util.concurrent.ConcurrentHashMap$KeySetView from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 309 [Loaded java.util.concurrent.ConcurrentHashMap$ValuesView from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 310 [Loaded java.util.concurrent.ConcurrentHashMap$EntrySetView from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 311 [Loaded sun.util.locale.BaseLocale from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 312 [Loaded sun.util.locale.BaseLocale$Cache from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 313 [Loaded sun.util.locale.BaseLocale$Key from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 314 [Loaded sun.util.locale.LocaleObjectCache$CacheEntry from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 315 [Loaded java.util.Locale$LocaleKey from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 316 [Loaded sun.util.locale.LocaleUtils from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 317 [Loaded java.lang.CharacterData from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 318 [Loaded java.lang.CharacterDataLatin1 from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 319 [Loaded java.net.Parts from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 320 [Loaded java.net.URLStreamHandler from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 321 [Loaded sun.net.www.protocol.file.Handler from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 322 [Loaded sun.misc.JavaSecurityAccess from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 323 [Loaded java.security.ProtectionDomain$JavaSecurityAccessImpl from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 324 [Loaded sun.misc.JavaSecurityProtectionDomainAccess from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 325 [Loaded java.security.ProtectionDomain$2 from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 326 [Loaded java.security.ProtectionDomain$Key from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 327 [Loaded java.security.Principal from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 328 [Loaded java.util.HashSet from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 329 [Loaded sun.misc.URLClassPath from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 330 [Loaded sun.net.www.protocol.jar.Handler from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 331 [Loaded sun.misc.Launcher$AppClassLoader$1 from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 332 [Loaded java.lang.SystemClassLoaderAction from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 333 [Loaded java.lang.invoke.MethodHandleImpl from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 334 [Loaded java.lang.invoke.MethodHandleImpl$1 from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 335 [Loaded java.util.function.Function from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 336 [Loaded java.lang.invoke.MethodHandleImpl$2 from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 337 [Loaded java.lang.invoke.MethodHandleImpl$3 from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 338 [Loaded java.lang.ClassValue from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 339 [Loaded java.lang.invoke.MethodHandleImpl$4 from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 340 [Loaded java.lang.ClassValue$Entry from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 341 [Loaded java.lang.ClassValue$Identity from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 342 [Loaded java.lang.ClassValue$Version from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 343 [Loaded java.lang.invoke.MemberName$Factory from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 344 [Loaded java.lang.invoke.MethodHandleStatics from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 345 [Loaded java.lang.invoke.MethodHandleStatics$1 from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 346 [Loaded sun.misc.PostVMInitHook from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 347 [Loaded sun.usagetracker.UsageTrackerClient from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 348 [Loaded java.util.concurrent.atomic.AtomicBoolean from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 349 [Loaded sun.usagetracker.UsageTrackerClient$1 from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 350 [Loaded sun.usagetracker.UsageTrackerClient$4 from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 351 [Loaded sun.usagetracker.UsageTrackerClient$3 from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 352 [Loaded java.io.FileOutputStream$1 from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 353 [Loaded sun.launcher.LauncherHelper from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 354 [Loaded java.net.URLClassLoader$1 from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 355 [Loaded sun.net.util.URLUtil from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 356 [Loaded sun.misc.URLClassPath$3 from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 357 [Loaded sun.misc.URLClassPath$Loader from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 358 [Loaded sun.misc.URLClassPath$JarLoader from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 359 [Loaded java.util.zip.ZipConstants from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 360 [Loaded java.util.zip.ZipFile from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 361 [Loaded sun.misc.JavaUtilZipFileAccess from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 362 [Loaded java.util.zip.ZipFile$1 from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 363 [Loaded sun.misc.URLClassPath$FileLoader from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 364 [Loaded sun.misc.Resource from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 365 [Loaded sun.misc.URLClassPath$FileLoader$1 from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 366 [Loaded sun.nio.ByteBuffered from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 367 [Loaded sun.misc.PerfCounter from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 368 [Loaded sun.misc.Perf$GetPerfAction from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 369 [Loaded sun.misc.Perf from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 370 [Loaded sun.misc.PerfCounter$CoreCounters from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 371 [Loaded sun.nio.ch.DirectBuffer from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 372 [Loaded java.nio.MappedByteBuffer from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 373 [Loaded java.nio.DirectByteBuffer from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 374 [Loaded java.nio.LongBuffer from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 375 [Loaded java.nio.DirectLongBufferU from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 376 [Loaded java.security.PermissionCollection from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 377 [Loaded java.security.Permissions from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 378 [Loaded java.net.URLConnection from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 379 [Loaded sun.net.www.URLConnection from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 380 [Loaded sun.net.www.protocol.file.FileURLConnection from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 381 [Loaded sun.net.www.MessageHeader from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 382 [Loaded java.io.FilePermission from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 383 [Loaded java.io.FilePermission$1 from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 384 [Loaded java.io.FilePermissionCollection from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 385 [Loaded java.security.AllPermission from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 386 [Loaded java.security.UnresolvedPermission from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 387 [Loaded java.security.BasicPermissionCollection from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 388 [Loaded Singleton from file:/usr/local/asmtools-7.0-build/binaries/lib/tmp3/] 389 [Loaded sun.launcher.LauncherHelper$FXHelper from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 390 [Loaded java.lang.Class$MethodArray from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 391 [Loaded java.lang.Void from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 392 --- 393 [Loaded Singleton$LazyHolder from file:/usr/local/asmtools-7.0-build/binaries/lib/tmp3/] 394 --- 395 LazyHolder.<clinit> 396 [Loaded java.lang.Shutdown from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 397 [Loaded java.lang.Shutdown$Lock from /usr/local/jdk1.8.0_111/jre/lib/rt.jar]View Code
javap -verbose Singleton顯示的全部資訊
1 [root@localhost tmp3]# javap -verbose Singleton
2 Classfile /usr/local/asmtools-7.0-build/binaries/lib/tmp3/Singleton.class
3 Last modified Aug 13, 2019; size 770 bytes
4 MD5 checksum 993ff066c953984c811ff7998d1a8e10
5 Compiled from "Singleton.java"
6 public class Singleton
7 minor version: 0
8 major version: 52
9 flags: ACC_PUBLIC, ACC_SUPER
10 Constant pool:
11 #1 = Methodref #9.#26 // Singleton."<init>":()V
12 #2 = Methodref #10.#26 // java/lang/Object."<init>":()V
13 #3 = Class #27 // Singleton$LazyHolder
14 #4 = Fieldref #3.#28 // Singleton$LazyHolder.INSTANCE:LSingleton;
15 #5 = Fieldref #29.#30 // java/lang/System.out:Ljava/io/PrintStream;
16 #6 = String #31 // ---
17 #7 = Methodref #32.#33 // java/io/PrintStream.println:(Ljava/lang/String;)V
18 #8 = Methodref #9.#34 // Singleton.getInstance:(Z)Ljava/lang/Object;
19 #9 = Class #35 // Singleton
20 #10 = Class #36 // java/lang/Object
21 #11 = Class #37 // Singleton$1
22 #12 = Utf8 InnerClasses
23 #13 = Utf8 LazyHolder
24 #14 = Utf8 <init>
25 #15 = Utf8 ()V
26 #16 = Utf8 Code
27 #17 = Utf8 LineNumberTable
28 #18 = Utf8 getInstance
29 #19 = Utf8 (Z)Ljava/lang/Object;
30 #20 = Utf8 StackMapTable
31 #21 = Utf8 main
32 #22 = Utf8 ([Ljava/lang/String;)V
33 #23 = Utf8 (LSingleton$1;)V
34 #24 = Utf8 SourceFile
35 #25 = Utf8 Singleton.java
36 #26 = NameAndType #14:#15 // "<init>":()V
37 #27 = Utf8 Singleton$LazyHolder
38 #28 = NameAndType #38:#39 // INSTANCE:LSingleton;
39 #29 = Class #40 // java/lang/System
40 #30 = NameAndType #41:#42 // out:Ljava/io/PrintStream;
41 #31 = Utf8 ---
42 #32 = Class #43 // java/io/PrintStream
43 #33 = NameAndType #44:#45 // println:(Ljava/lang/String;)V
44 #34 = NameAndType #18:#19 // getInstance:(Z)Ljava/lang/Object;
45 #35 = Utf8 Singleton
46 #36 = Utf8 java/lang/Object
47 #37 = Utf8 Singleton$1
48 #38 = Utf8 INSTANCE
49 #39 = Utf8 LSingleton;
50 #40 = Utf8 java/lang/System
51 #41 = Utf8 out
52 #42 = Utf8 Ljava/io/PrintStream;
53 #43 = Utf8 java/io/PrintStream
54 #44 = Utf8 println
55 #45 = Utf8 (Ljava/lang/String;)V
56 {
57 public static java.lang.Object getInstance(boolean);
58 descriptor: (Z)Ljava/lang/Object;
59 flags: ACC_PUBLIC, ACC_STATIC
60 Code:
61 stack=1, locals=1, args_size=1
62 0: iload_0
63 1: ifeq 9
64 4: iconst_2
65 5: anewarray #3 // class Singleton$LazyHolder
66 8: areturn
67 9: getstatic #4 // Field Singleton$LazyHolder.INSTANCE:LSingleton;
68 12: areturn
69 LineNumberTable:
70 line 11: 0
71 line 12: 9
72 StackMapTable: number_of_entries = 1
73 frame_type = 9 /* same */
74
75 public static void main(java.lang.String...);
76 descriptor: ([Ljava/lang/String;)V
77 flags: ACC_PUBLIC, ACC_STATIC, ACC_VARARGS
78 Code:
79 stack=2, locals=1, args_size=1
80 0: getstatic #5 // Field java/lang/System.out:Ljava/io/PrintStream;
81 3: ldc #6 // String ---
82 5: invokevirtual #7 // Method java/io/PrintStream.println:(Ljava/lang/String;)V
83 8: iconst_1
84 9: invokestatic #8 // Method getInstance:(Z)Ljava/lang/Object;
85 12: pop
86 13: getstatic #5 // Field java/lang/System.out:Ljava/io/PrintStream;
87 16: ldc #6 // String ---
88 18: invokevirtual #7 // Method java/io/PrintStream.println:(Ljava/lang/String;)V
89 21: iconst_0
90 22: invokestatic #8 // Method getInstance:(Z)Ljava/lang/Object;
91 25: pop
92 26: return
93 LineNumberTable:
94 line 15: 0
95 line 16: 8
96 line 17: 13
97 line 18: 21
98 line 19: 26
99
100 Singleton(Singleton$1);
101 descriptor: (LSingleton$1;)V
102 flags: ACC_SYNTHETIC
103 Code:
104 stack=1, locals=2, args_size=2
105 0: aload_0
106 1: invokespecial #1 // Method "<init>":()V
107 4: return
108 LineNumberTable:
109 line 1: 0
110 }
111 SourceFile: "Singleton.java"
112 InnerClasses:
113 static #11; //class Singleton$1
View Code
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