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| 1 | +public class Arr { |
| 2 | + public static void main(String args[]) { |
| 3 | + int a[] = {1, 2, 3, 4}; |
| 4 | + int b[] = {100, 200, 300}; |
| 5 | + int c[] = {7, 8, 9}; |
| 6 | + char d[] = {'A', '你', '好', '啊', '!'}; |
| 7 | + |
| 8 | + System.out.println("数组a的元素个数 = "+ a.length); |
| 9 | + System.out.println("数组b的元素个数 = "+ b.length); |
| 10 | + System.out.println("数组c的元素个数 = "+ c.length); |
| 11 | + |
| 12 | + System.out.println("数组a的引用 = "+ a); |
| 13 | + System.out.println("数组b的引用 = "+ b); |
| 14 | + System.out.println("数组cde引用 = "+ c); |
| 15 | + |
| 16 | + System.out.println("a == b的结果是"+ (a == b)); |
| 17 | + a = b; |
| 18 | + System.out.println("数组a的元素个数 = "+ a.length); |
| 19 | + System.out.println("数组b的元素个数 = "+ b.length); |
| 20 | + |
| 21 | + System.out.println("a == b的结果是"+ (a == b)); |
| 22 | + System.out.println("a[0] ="+ a[0] + ",a[1] ="+ a[1]+ ",a[2] ="+ a[2]); |
| 23 | + System.out.println("b[0] ="+ b[0] + ",b[1] ="+ b[1] +",b[2] ="+ b[2]); |
| 24 | + |
| 25 | + System.out.println("b == c的结果是"+ (b == c)); |
| 26 | + b = c; |
| 27 | + System.out.println("数组b的元素个数 = "+ b.length); |
| 28 | + System.out.println("数组c的元素个数 = "+ c.length); |
| 29 | + System.out.println("b[0] = "+ b[0] +",b[1] = "+ b[1] +",b[2] = "+ b[2]); |
| 30 | + System.out.println("c[0] = "+ c[0] +",c[1] = "+ c[1] +",c[2] = "+ c[2]); |
| 31 | + |
| 32 | + System.out.println(d); |
| 33 | + System.out.println("数组d的引用"+a); |
| 34 | + System.out.println("数组d的元素个数 = "+ d.length); |
| 35 | + } |
| 36 | +} |
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