switch case语句

public static void switchcaseDemo(int num) {
	switch(num)
        {
            case 0:
            	System.out.println("这是0");
              break;
            case 1:
            	System.out.println("这是1");
              break;
            case 2:
            	System.out.println("这是2");
              break;
            
            default:
            	System.out.println("这大于2");
        }
}

输入2测试