Java 数组的 12 个最佳方法详解编程语言

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

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

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

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

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

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

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

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

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

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

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

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