public class TestArray {

	public static void main(String[] args) {
		TestArray ta = new TestArray();
		
		//关于数组的测试
		int[] a = {1,2,3};
		int[] b = a;
		System.out.println(a == b);//结果为true
		b[2] = 5;
		System.out.println(a == b);//结果为true
		int[] c = new int[] {1,2,5};
		int[] d = c;
		System.out.println(a == c);//结果为false
		//System.out.println(a.equals(c));//结果为false
		System.out.println(Arrays.equals(a, c));//结果为true
		System.out.println(c == d);//结果为true
		System.out.println("*********");
		System.out.println(ta.equals(a, c));//结果为true		
	}
	
	/**重写equals方法*/
	public boolean equals(int[] array1, int[] array2) {
		boolean isNull = array1 == null || array2 == null;
		if (isNull) {
			return false;
		} else {
			boolean isLenEqual = array1.length == array2.length;
			if (!isLenEqual) {
				return false;
			} else {
				for (int i = 0; i < array1.length; i++) {
					boolean isNumEqual = array1[i] == array2[i];
					if (isNumEqual) {
						return true;
					} else {
						return false;
					}
				}	
			}
		}
		return false;		
	}
}