分类:
2008-09-12 09:06:29
public class Arrays { public static void main(String[] args) { int[] a1 = { 1, 2, 3, 4, 5 }; for (int i = 0; i < a1.length; i++) System.out.println("a1[" + i + "] = " + a1); int[] a2; a2 = a1; for (int i = 0; i < a2.length; i++) a2++; System.out.println("-----after change a2------"); for (int i = 0; i < a1.length; i++) System.out.println("a1[" + i + "] = " + a1); System.out.println("-----after change a2[0]------"); a2[0] = 333; System.out.println("a2[0]=" + a2[0]); System.out.println("a1[0]=" + a1[0]); System.out.println("----- a2------"); for (int i = 0; i < a2.length; i++) System.out.println("a2[" + i + "] = " + a2); } } |
结果:
a1[0] = 1
a1[1] = 2
a1[2] = 3
a1[3] = 4
a1[4] = 5
-----after change a2------
a1[0] = 2
a1[1] = 3
a1[2] = 4
a1[3] = 5
a1[4] = 6
-----after change a2[0]------
a2[0]=333
a1[0]=333
----- a2------
a2[0] = 333
a2[1] = 3
a2[2] = 4
a2[3] = 5
a2[4] = 6
数组a1和a2始终在操作同一个对象。
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