System.arraycopy用法

2024-08-31 12:05:51

System.arraycopy用法

注意长度的设置；

public class ArrCopy {

    public static void main(String[] args) {

        int [] src = {1,2,3,4,5,6,7,8,9,10};

        int [] src2 = {1,2,3,4,5,6,7,8,9,10};

        int [] dest = new int[20];

        System.arraycopy(src, 0, dest, 0, 10);

        System.arraycopy(src2, 0, dest, 10, 10);

        System.out.println(Arrays.toString(dest));

    }

}

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