int i1[] = {1,2,3,4,5,6};
int i2[] = {6,5,4,3,2,1};
//排序
Arrays.sort(i2);
System.out.println(i1.equals( i2 ));
System.out.println( Arrays.equals(i1, i2) );
//将数组2的内容填充3
Arrays.fill(i2, 3);
System.out.println( Arrays.toString(i2) );
原文：http://www.cnblogs.com/achengmu/p/6922472.html