註：本章節是網上查找保存學習使用！

java中數組的定義：
字符串數組：
1、String[] str=new String[5];
2、String[] str=new String[]{"a","b"};
3、String[] str={"a","b"};
整形數組：
1、int[] i=new int[5];
2、int[] i=new int[]{0,1};
3、int[] i={0,1};

其他數組定義的方法類似！

. 聲明一個數組

1. String[] aArray = new String[5];
2. String[] bArray = {"a","b","c", "d", "e"};
3. String[] cArray = new
   String[]{"a","b","c","d","e"};

1. int[] intArray = { 1, 2, 3, 4, 5 };
2. String intArrayString = Arrays.toString(intArray);
4. // print directly will print reference value
5. System.out.println(intArray);
6. // [[email protected]
8. System.out.println(intArrayString);
9. // [1, 2, 3, 4, 5]

1. String[] stringArray = { "a", "b", "c", "d", "e" };
2. ArrayList<String> arrayList = new ArrayList<String>(Arrays.asList(stringArray));
3. System.out.println(arrayList);
4. // [a, b, c, d, e]

1. String[] stringArray = { "a", "b", "c", "d", "e" };
2. boolean b = Arrays.asList(stringArray).contains("a");
3. System.out.println(b);
4. // true

1. int[] intArray = { 1, 2, 3, 4, 5 };
2. int[] intArray2 = { 6, 7, 8, 9, 10 };
3. // Apache Commons Lang library
4. int[] combinedIntArray = ArrayUtils.addAll(intArray, intArray2);

1. method(new String[]{"a", "b", "c", "d", "e"});

1. // containing the provided list of elements
2. // Apache common lang
3. String j = StringUtils.join(new String[] { "a", "b", "c" }, ", ");
4. System.out.println(j);
5. // a, b, c

1. String[] stringArray = { "a", "b", "c", "d", "e" };
2. ArrayList<String> arrayList = new ArrayList<String>(Arrays.asList(stringArray));
3. String[] stringArr = new String[arrayList.size()];
4. arrayList.toArray(stringArr);
5. for (String s : stringArr)
6. System.out.println(s);

1. Set<String> set = new HashSet<String>(Arrays.asList(stringArray));
2. System.out.println(set);
3. //[d, e, b, c, a]

1. int[] intArray = { 1, 2, 3, 4, 5 };
2. ArrayUtils.reverse(intArray);
3. System.out.println(Arrays.toString(intArray));
4. //[5, 4, 3, 2, 1]

1. int[] intArray = { 1, 2, 3, 4, 5 };
2. int[] removed = ArrayUtils.removeElement(intArray, 3);//create a new array
3. System.out.println(Arrays.toString(removed));

1. byte[] bytes = ByteBuffer.allocate(4).putInt(8).array();
3. for (byte t : bytes) {
4. System.out.format("0x%x ", t);
5. }

java中的數組