獲取碼值(各種類型字符(中、英)的ASCII)和進制轉換系統(包括正負數、小數)
阿新 • • 發佈:2018-04-18
獲取碼值 進制轉換 十進制小數負數轉二進制 java進制轉換 ASCII 獲取碼值和進制轉換
程序由來:
本人發現計算機中的計算器木有將十進制小數轉二進制的功能,後來發現一些網站將十進制負數轉二進制只是求出整數的二進制,然後前面加“-”,這種表示不是真正的負數二進制。於是愛較真兒的我寫了一個可以轉十進制小數、負數、負數加小數為二進制的系統,供大家學習參考。介於理解代碼,代碼中運用到了純拼音。雖然是拼音,但符合代碼編寫格式。介於個人知識有限,代碼如有需要修改和改進的地方,敬請大家評教指正,共同學習。
實現功能:
獲取字符的碼值,包括中文。
進制轉換包括:十進制(整數/小數/負數)轉成二進制、八進制、十六進制。
供需要學習Java基礎的朋友參考學習。
代碼:
代碼語言:Java
包:
源碼:
主方法(main)類:主要是表現用戶功能選擇界面
package com.main.lt; import java.util.Scanner; import com.jinzhizhuanhuan.lt.JinZhiZhuanHuan; import com.mazhi.lt.HuoQuMaZhi; import com.menus.lt.Menus; /** * * @author LiuTong * @version V1.1 * * */ public class MainApp { public static void main(String[] args) {//主方法 //創建菜單類對象 Menus menus = new Menus(); //創建獲取碼值方法對象 HuoQuMaZhi hQMZ = new HuoQuMaZhi(); //創建進制轉換對象 JinZhiZhuanHuan jinZhiZhuanHuan = new JinZhiZhuanHuan(); //創建鍵盤錄入對象 Scanner sc = new Scanner(System.in); //使用while循環 //定義斷點,用於退出while循環 boolean zhuBL = true; while(zhuBL){ //使用菜單對象調用主菜單 menus.mainMenus(); //鍵盤錄入,使用switch語句判斷,做相應操作(case) switch(sc.nextLine()){ case "1"://獲取碼值 hQMZ.huoQuMaZhi();//使用獲取碼值對象調用獲取碼值方法 break; case "2"://進制轉換 jinZhiZhuanHuan.jinZhiZhuanHuan();//使用進制轉換對象調用進制轉換方法 break; case "3": zhuBL = false;//斷點 break; case "": menus.shiKongMenu();//為空菜單 break; default: menus.shuRuCuoWuMenu();//輸入錯誤菜單 break; } } } }
菜單類:
package com.menus.lt; /** * * @author LiuTong * @version V1.1 * */ public class Menus { //空構造 public Menus(){ } //成員方法 //主菜單 public void mainMenus(){ System.out.println("-------------------------主菜單---------------------------"); System.out.println("1、查詢碼值\t2、進制轉換\t3、退出"); System.out.print("請輸入您的操作:"); } //------------------------------------------字節碼------------------------------------ //字節碼菜單 public void huoQuMaZhiMenus(){ System.out.println("-------------------------字節碼-------------------------"); System.out.print("請輸入內容(中文、英語、符號):"); } //------------------------------------------進制轉換------------------------------------ public void jinZhiZhuanHuanMenus(){ System.out.println("-------------------------進制轉換-------------------------"); System.out.println("1、二進制轉成其他進制\t2、八進制轉成其他進制\t3、十進制轉成其他進制\t4、十六進制轉成其他進制\n5、返回"); System.out.print("請輸入您的操作:"); } //------------------------------------------十進制轉其他進制------------------------------------ public void shiZhuanQiTaMenus(){ System.out.println("------------------十進制轉其他進制------------------"); System.out.println("1、轉成二進制\t2、轉成八進制\t3、轉成十六進制\n4、返回"); System.out.print("請輸入您的操作:"); } public void shiZhuanErMenu(){ System.out.println("------------------十進制轉成二進制------------------"); System.out.print("請輸入數據(整數(正負)、小數):"); } public void shiZhuanBaMenu(){ System.out.println("------------------十進制轉成八進制------------------"); System.out.print("請輸入數據(整數(正負)、小數):"); } public void shiZhuanShiLiuMenu(){ System.out.println("------------------十進制轉成十六進制------------------"); System.out.print("請輸入數據(整數(正負)、小數):"); } //----------------------------------------------------------------------------------------- //------------------------------------------二進制轉其他進制------------------------------------ public void erZhaunQiTaMenus(){ System.out.println("------------------二進制轉其他進制------------------"); System.out.println("1、轉成八進制\t2、轉成十進制\t3、轉成十六進制\n4、返回"); System.out.print("請輸入您的操作:"); } public void erZhuanBaMenu(){ System.out.println("------------------二進制轉成八進制------------------"); System.out.print("請輸入數據(1/0):"); } public void erZhuanShiMenu(){ System.out.println("------------------二進制轉成十進制------------------"); System.out.print("請輸入數據(1/0):"); } public void erZhuanShiLiuMenu(){ System.out.println("------------------二進制轉成十六進制------------------"); System.out.print("請輸入數據(1/0):"); } //----------------------------------------------------------------------------------------- //------------------------------------------八進制轉其他進制------------------------------------ public void baZhuanQiTaMenus(){ System.out.println("------------------八進制轉其他進制------------------"); System.out.println("1、轉成二進制\t2、轉成十進制\t3、轉成十六進制\n4、返回"); System.out.print("請輸入您的操作:"); } public void baZhuanErMenu(){ System.out.println("------------------八進制轉成二進制------------------"); System.out.print("請輸入數據(0-7):"); } public void baZhuanShiMenu(){ System.out.println("------------------八進制轉成十進制------------------"); System.out.print("請輸入數據(0-7):"); } public void baZhuanShiLiuMenu(){ System.out.println("------------------八進制轉成十六進制------------------"); System.out.print("請輸入數據(0-7):"); } //----------------------------------------------------------------------------------------- //------------------------------------------十六進制轉其他進制------------------------------------ public void shiLiuZhuanQiTaMenus(){ System.out.println("------------------十六進制轉其他進制------------------"); System.out.println("1、轉成二進制\t2、轉成八進制\t3、轉成十進制\n4、返回"); System.out.print("請輸入您的操作:"); } public void shiLiuZhuanErMenu(){ System.out.println("------------------十六進制轉成二進制------------------"); System.out.print("請輸入數據:"); } public void shiLiuZhuanBaMenu(){ System.out.println("------------------十六進制轉成十進制------------------"); System.out.print("請輸入數據:"); } public void shiLiuZhuanShiMenu(){ System.out.println("------------------十六進制轉成八進制------------------"); System.out.print("請輸入數據:"); } //----------------------------------------------------------------------------------------- //輸入為空提示菜單 public void shiKongMenu(){ System.out.println("輸入不能為空,請重新輸入!"); } //輸入錯誤提示菜單 public void shuRuCuoWuMenu(){ System.out.println("輸入錯誤,請重新輸入!"); } //是否繼續輸入提示 public void shiFouJiXuMenu(){ System.out.println("是否繼續(Y/N)?"); } }
獲取碼值類:
package com.mazhi.lt; import java.util.Scanner; import com.jinzhizhuanhuan.lt.JinZhiZhuanHuan; import com.main.lt.MainApp; import com.menus.lt.Menus; /** * * @author LiuTong * @version V1.1 * */ public class HuoQuMaZhi { //空構造 public HuoQuMaZhi(){} //創建菜單對象 Menus menus = new Menus(); //定義用戶選擇方法 public void huoQuMaZhi(){ //boolean huoQuMaZhiBL = true; menus.huoQuMaZhiMenus();//使用菜單對象調用碼值菜單 byte[] b = new Scanner(System.in).nextLine().getBytes(); System.out.println(new String(b)+"的字節碼值和二進制表示為:"); for(int c : b){ System.out.println("字節碼值:"+c+"\t"+"字節碼值二進制表示:"+Integer.toBinaryString(c)); } System.out.println("------------------------------------------------------"); //是否繼續 if(new JinZhiZhuanHuan().sel()){ huoQuMaZhi(); }else{ new MainApp().main(null); } } }
進制轉換類:
package com.jinzhizhuanhuan.lt; import java.util.Scanner; import com.main.lt.MainApp; import com.menus.lt.Menus; /** * * @author LiuTong * @version V1.1 * */ public class JinZhiZhuanHuan {//進制轉換菜單 //空構造 public JinZhiZhuanHuan(){} //進制轉換選擇方法 public void jinZhiZhuanHuan(){ //創建菜單對象 Menus menus = new Menus(); //定義斷點 boolean jinZZHBL = true; //while循環 while(jinZZHBL){ //使用菜單對象調用進制轉換菜單 menus.jinZhiZhuanHuanMenus(); //swtich語句,選擇現有的操作 switch(new Scanner(System.in).nextLine()){ case "1": erZhuanQiTa(); break; case "2": baZhuanQiTa(); break; case "3": shiZhuanQiTa(); break; case "4": shiLiuZhuanQiTa(); break; case "5": new MainApp().main(null); break; case "": menus.shiKongMenu(); break; default: menus.shuRuCuoWuMenu(); break; } } } //----------------------------------------二進制轉其他進制----------------------------------------- //二進制轉其他進制 public void erZhuanQiTa(){ Menus menus = new Menus();//創建菜單對象 //定義斷點 boolean erZhuanQiTaBL = true; //while循環 while(erZhuanQiTaBL){ menus.erZhaunQiTaMenus(); switch(new Scanner(System.in).nextLine()){ case "1": erZhuanBa(); break; case "2": erZhuanShi(); break; case "3": erZhuanShiLiu(); break; case "4": jinZhiZhuanHuan();//返回 break; case "": menus.shiKongMenu(); break; default: menus.shuRuCuoWuMenu(); break; } } } //----------------------------------二進制轉八進制--------------------------------------------- public void erZhuanBa(){ new Menus().erZhuanBaMenu();; String sel = new Scanner(System.in).nextLine(); String shi = ""; if(shiErJinZhi(sel)){ System.out.println("八進制:"+Integer.toOctalString(Integer.valueOf(Integer.valueOf(sel,2).toString()))); //判斷是否繼續 if(sel()){ erZhuanBa(); }else{ erZhuanQiTa(); } }else{ System.out.println("輸入有誤,請重新輸入!"); erZhuanBa(); } } //----------------------------------二進制轉十進制------------------------------------------------ public void erZhuanShi(){ new Menus().erZhuanShiMenu(); String sel = new Scanner(System.in).nextLine(); if(shiErJinZhi(sel)){ System.out.println("十進制:"+Integer.valueOf(sel,2).toString()); //判斷是否繼續 if(sel()){ erZhuanShi(); }else{ erZhuanQiTa(); } }else{ System.out.println("輸入有誤,請重新輸入!"); erZhuanShi(); } } //----------------------------------二進制轉十六進制------------------------------------------------ public void erZhuanShiLiu(){ new Menus().erZhuanShiLiuMenu(); String sel = new Scanner(System.in).nextLine(); if(shiErJinZhi(sel)){ System.out.println("十六進制:"+Integer.toHexString(Integer.valueOf(Integer.valueOf(sel,2).toString()))); //判斷是否繼續 if(sel()){ erZhuanShiLiu(); }else{ erZhuanQiTa(); } }else{ System.out.println("輸入有誤,請重新輸入!"); erZhuanShiLiu(); } } //------------------------------------------------------------------------------------------- //----------------------------------------------八進制轉其他進制----------------------------------- public void baZhuanQiTa(){ Menus menus = new Menus();//創建菜單對象 //定義斷點 boolean baZhuanQiTaBL = true; //while循環 while(baZhuanQiTaBL){ menus.baZhuanQiTaMenus(); switch(new Scanner(System.in).nextLine()){ case "1": baZhuanEr(); break; case "2": baZhuanShi(); break; case "3": baZhuanShiLiu(); break; case "4": jinZhiZhuanHuan();//返回 break; case "": menus.shiKongMenu(); break; default: menus.shuRuCuoWuMenu(); break; } } } //------------------------------------------------八轉二--------------------------------------- public void baZhuanEr(){ new Menus().baZhuanErMenu(); String sel = new Scanner(System.in).nextLine(); if(shiBaJinZhi(sel)){ System.out.println("二進制:"+Integer.toBinaryString(Integer.valueOf(Integer.valueOf(sel,8).toString()))); //判斷是否繼續 if(sel()){ baZhuanEr(); }else{ baZhuanQiTa(); } }else{ System.out.println("輸入有誤,請重新輸入!"); baZhuanEr(); } } //------------------------------------------------八轉十--------------------------------------- public void baZhuanShi(){ new Menus().baZhuanShiMenu();; String sel = new Scanner(System.in).nextLine(); if(shiBaJinZhi(sel)){ System.out.println("十進制:"+Integer.valueOf(Integer.valueOf(sel,8).toString())); //判斷是否繼續 if(sel()){ baZhuanShi(); }else{ baZhuanQiTa(); } }else{ System.out.println("輸入有誤,請重新輸入!"); baZhuanShi(); } } //------------------------------------------------------------------------------------------- //------------------------------------------------八轉十六--------------------------------------- public void baZhuanShiLiu(){ new Menus().baZhuanShiLiuMenu();; String sel = new Scanner(System.in).nextLine(); if(shiBaJinZhi(sel)){ System.out.println("二進制:"+Integer.toHexString(Integer.valueOf(Integer.valueOf(sel,8).toString()))); //判斷是否繼續 if(sel()){ baZhuanShiLiu(); }else{ baZhuanQiTa(); } }else{ System.out.println("輸入有誤,請重新輸入!"); baZhuanShiLiu(); } } //------------------------------------------------------------------------------------------- //----------------------------------------------十進制轉其他進制----------------------------------- //十轉其他 public void shiZhuanQiTa(){ //創建菜單目錄 Menus menus = new Menus(); //定義斷點 boolean shiZhuanQiTaBL = true; while(shiZhuanQiTaBL){ menus.shiZhuanQiTaMenus();//調用十轉其他進制菜單 //switch語句 switch(new Scanner(System.in).nextLine()){ case "1": shiZhuanEr(); break; case "2": shiZhuanBa(); break; case "3": shiZhuanShiLiu(); break; case "4": jinZhiZhuanHuan(); break; case "": menus.shiKongMenu(); break; default: menus.shuRuCuoWuMenu(); break; } } } //-------------------------十進制轉成二進制--------------------------- public void shiZhuanEr(){ //定義斷點 boolean shiZhuanErBL = true; while(shiZhuanErBL){ new Menus().shiZhuanErMenu(); String str = new Scanner(System.in).nextLine(); if(shuZi(str)){ String regex2 = "-?[0-9]+"; boolean n = str.matches(regex2); //整數部分的二進制 String l1 = ""; if(n){ System.out.println("二進制:"+Integer.toBinaryString(Integer.valueOf(str))); //判斷是否繼續 if(sel()){ shiZhuanEr(); }else{ shiZhuanQiTa(); } }else if(catc(str)){ String [] strs = str.split("\\."); System.out.println("二進制"+Integer.toBinaryString(Integer.valueOf(strs[0]))); //判斷是否繼續 if(sel()){ shiZhuanEr(); }else{ shiZhuanQiTa(); } }else{ //分割字符串,得到整數部分和小數部分 String [] strs = str.split("\\."); if(strs[1]==""){ System.out.println("二進制:"+Integer.toBinaryString(Integer.valueOf(str))); }else if(Integer.valueOf(strs[0])>=1){//判斷整數部分是否大於1 l1 = Integer.toBinaryString(Integer.valueOf(strs[0]));//得到整數部分二進制 }else if(str.startsWith("-")){ l1 =Integer.toBinaryString(Integer.valueOf(strs[0])); }else{ l1 = "0"; } //得到小數部分的二進制 String xiao = "0."+strs[1]; double xiaoShu = Double.valueOf("0."+strs[1]); //System.out.println(xiaoShu); String l2;//小數部分二進制 double b = 0;//每次的乘積 int count = xiao.length(); StringBuilder sb = new StringBuilder(); while(count>=0){ b = xiaoShu*2; if(b>=1){ sb.append(1); xiaoShu = b-1; }else if(xiaoShu==0){ break; }else{ sb.append(0); xiaoShu = b; } count--; } //輸出二進制 System.out.println("二進制:"+l1+"."+sb); //判斷是否繼續 if(sel()){ shiZhuanEr(); }else{ shiZhuanQiTa(); } } }else{ shiZhuanEr(); } } } //-------------------------十進制轉成八進制--------------------------- public void shiZhuanBa(){ //定義斷點 boolean shiZhuanBaBL = true; while(shiZhuanBaBL){ new Menus().shiZhuanBaMenu(); String str = new Scanner(System.in).nextLine(); if(shuZi(str)){ String regex2 = "-?[0-9]*"; boolean n = str.matches(regex2); //整數部分的八進制 String l1 = ""; if(n){ System.out.println("八進制:"+Integer.toOctalString(Integer.valueOf(str))); //判斷是否繼續 if(sel()){ shiZhuanBa(); }else{ shiZhuanQiTa(); } }else if(catc(str)){ String [] strs = str.split("\\."); System.out.println("八進制:"+Integer.toOctalString(Integer.valueOf(strs[0]))); //判斷是否繼續 if(sel()){ shiZhuanBa(); }else{ shiZhuanQiTa(); } }else{ //分割字符串,得到整數部分和小數部分 String [] strs2 = str.split("\\."); if(strs2[1]==""){ System.out.println("八進制:"+Integer.toOctalString(Integer.valueOf(str))); }else if(Integer.valueOf(strs2[0])>=1){//判斷整數部分是否大於1 l1 = Integer.toOctalString(Integer.valueOf(strs2[0]));//得到整數部分八進制 }else if(str.startsWith("-")){ l1 = Integer.toOctalString(Integer.valueOf(strs2[0])); }else{ l1 = "0"; } //得到小數部分的八進制 String xiao = "0."+strs2[1]; double xiaoShu = Double.valueOf("0."+strs2[1]); //System.out.println(xiaoShu); String l2; double b = 0;//每次的乘積 int count = xiao.length(); StringBuilder sb = new StringBuilder(); while(count>=0){ b = xiaoShu*8; if((int)b>=1){ sb.append((int)b); xiaoShu = b-(int)b; }else if(xiaoShu==0){ break; }else{ sb.append(0); xiaoShu = b; } count--; } System.out.println("八進制:"+l1+"."+sb); //判斷是否繼續 if(sel()){ shiZhuanBa(); }else{ shiZhuanQiTa(); } } }else{ shiZhuanEr(); } } } //-------------------------十進制轉成十六進制--------------------------- public void shiZhuanShiLiu(){ //定義斷點 boolean shiZhuanShiLiuBL = true; while(shiZhuanShiLiuBL){ new Menus().shiZhuanShiLiuMenu(); String str = new Scanner(System.in).nextLine(); if(shuZi(str)){ String regex2 = "-?[0-9]+"; boolean n = str.matches(regex2); //整數部分的十六進制 String l1 = ""; if(n){ System.out.println("十六進制:"+Integer.toHexString(Integer.valueOf(str))); //判斷是否繼續 if(sel()){ shiZhuanShiLiu(); }else{ shiZhuanQiTa(); } }else if(catc(str)){ String [] strs = str.split("\\."); System.out.println("十六進制:"+Integer.toHexString(Integer.valueOf(strs[0]))); //判斷是否繼續 if(sel()){ shiZhuanShiLiu(); }else{ shiZhuanQiTa(); } }else{ //分割字符串,得到整數部分和小數部分 String [] strs2 = str.split("\\."); if(strs2[1]==""){ System.out.println("十六進制:"+Integer.toHexString(Integer.valueOf(str))); }else if(Integer.valueOf(strs2[0])>=1){//判斷整數部分是否大於1 l1 = Integer.toHexString(Integer.valueOf(strs2[0]));//得到整數部分十六進制 }else if(str.startsWith("-")){ l1 = Integer.toHexString(Integer.valueOf(strs2[0])); }else{ l1 = "0"; } //得到小數部分的十六進制 String xiao = "0."+strs2[1]; double xiaoShu = Double.valueOf("0."+strs2[1]); //System.out.println(xiaoShu); String l2;//小數部分十六進制 double b = 0;//每次的乘積 int count = xiao.length(); StringBuilder sb = new StringBuilder(); while(count>=0){ b = xiaoShu*16; if((int)b>=1){ sb.append((int)b); xiaoShu = b-(int)b; }else if(xiaoShu==0){ break; }else{ sb.append(0); xiaoShu = b; } count--; } System.out.println("十六進制:"+l1+"."+sb); //判斷是否繼續 if(sel()){ shiZhuanShiLiu(); }else{ shiZhuanQiTa(); } } }else{ shiZhuanShiLiu(); } } } //------------------------------十六進制轉其他進制-------------------------------- public void shiLiuZhuanQiTa(){ Menus menus = new Menus();//創建菜單對象 //定義斷點 boolean shiLiuZhuanQiTaBL = true; //while循環 while(shiLiuZhuanQiTaBL){ menus.shiLiuZhuanQiTaMenus(); switch(new Scanner(System.in).nextLine()){ case "1": shiLiuZhuanEr(); break; case "2": shiLiuZhuanBa(); break; case "3": shiLiuZhuanShi(); break; case "4": jinZhiZhuanHuan();//返回 break; case "": menus.shiKongMenu(); break; default: menus.shuRuCuoWuMenu(); break; } } } //-------------------------十六轉二-------------------------- public void shiLiuZhuanEr(){ new Menus().shiLiuZhuanErMenu();; String sel = new Scanner(System.in).nextLine(); String shi = ""; if(shiShiLiuJinZhi(sel)){ System.out.println("二進制:"+Integer.toBinaryString(Integer.valueOf(Integer.valueOf(sel,16).toString()))); //判斷是否繼續 if(sel()){ shiLiuZhuanEr(); }else{ shiLiuZhuanQiTa(); } }else{ System.out.println("輸入有誤,請重新輸入!"); shiLiuZhuanEr(); } } //-------------------------十六轉八-------------------------- public void shiLiuZhuanBa(){ new Menus().shiLiuZhuanBaMenu(); String sel = new Scanner(System.in).nextLine(); String shi = ""; if(shiShiLiuJinZhi(sel)){ System.out.println("八進制:"+Integer.toOctalString(Integer.valueOf(Integer.valueOf(sel,16).toString()))); //判斷是否繼續 if(sel()){ shiLiuZhuanBa(); }else{ shiLiuZhuanQiTa(); } }else{ System.out.println("輸入有誤,請重新輸入!"); shiLiuZhuanBa(); } } //-------------------------十六轉十-------------------------- public void shiLiuZhuanShi(){ new Menus().shiLiuZhuanShiMenu(); String sel = new Scanner(System.in).nextLine(); String shi = ""; if(shiShiLiuJinZhi(sel)){ System.out.println("十進制:"+Integer.valueOf(Integer.valueOf(sel,16).toString())); //判斷是否繼續 if(sel()){ shiLiuZhuanShi(); }else{ shiLiuZhuanQiTa(); } }else{ System.out.println("輸入有誤,請重新輸入!"); shiLiuZhuanShi(); } } //-------------------------輸入判斷Yes or No--------------------------- public boolean sel(){ boolean bl = true; new Menus().shiFouJiXuMenu(); String str = new Scanner(System.in).nextLine(); if(str.equalsIgnoreCase("Y")){ return true; }else if(str.equalsIgnoreCase("N")){ return false; }else { System.out.println("輸入有誤,請重新輸入!"); bl = sel(); } return bl; } //-------------------------判斷是否為數字---------------------------- //判斷是否為數字 public static boolean shuZi(String str){ String regex1 = "-?[0-9]+(\\.[0-9]+)?"; boolean returnBoolean; boolean m = str.matches(regex1); if(str ==""){ new Menus().shiKongMenu(); returnBoolean = false; }else if(m){ returnBoolean = true; }else{ System.out.println("您的輸入含有不是數字的內容!"); returnBoolean = false; } return returnBoolean; } //-------------------------判斷.後面的數字是否等於0---------------------------- //判斷.後面的數是否等於0 public static boolean catc(String str){ boolean bl = false; String [] strs = str.split("\\."); if(Integer.valueOf(strs[1])==0){ bl = true; } return bl; } //-----------------------------判斷是否是二進制---------------------------------- //判斷是否為二進制 public static boolean shiErJinZhi(String str){ boolean er = false; /* char[] ch = str.toCharArray(); for(char c : ch){ if(c =='0' || c == '1'){ er = true; } }*/ String regex = "[10]+"; if(str.matches(regex)){ er = true; } return er; } //-----------------------------判斷是否是八進制---------------------------------- //判斷是否為八進制 public static boolean shiBaJinZhi(String str){ boolean ba = false; char[] ch = str.toCharArray(); for(char c : ch){ if(c >= '0' && c<= '7'){ ba = true; } } return ba; } //----------------------------判斷是否是十六進制----------------------------------- //判斷是否為十六進制 public static boolean shiShiLiuJinZhi(String str){ boolean ba = false; String str1 = "-?[0-9A-Fa-f]+"; if(str.matches(str1)){ ba = true; } return ba; } }
獲取碼值(各種類型字符(中、英)的ASCII)和進制轉換系統(包括正負數、小數)