package ch3;

public class TestArrayCopy {
	public static void main(String args[]) {
		String[] s = { "Mircosoft", "IBM", "Huawei", "Oracle", "Apple" };
		String[] sBak = new String[6]; //注意这里长度为6
		System.arraycopy(s, 0, sBak, 0, s.length);

		for (int i = 0; i < sBak.length; i++) {
			System.out.print(sBak[i] + " ");
		}

		System.out.println(); //生成一个空行
		
		int[][] intArray = { { 1, 2 }, { 1, 2, 3 }, { 3, 4 } };
		int[][] intArrayBak = new int[3][];
		//int[][] intArrayWrong = new int[][3];
		System.arraycopy(intArray, 0, intArrayBak, 0, intArray.length);
		intArrayBak[2][1] = 100;

		for (int i = 0; i < intArray.length; i++) {
			for (int j = 0; j < intArray[i].length; j++) {
				System.out.print(intArray[i][j] + "  ");
			}
			System.out.println();
		}
	}
}