while循环

public class Loop {
    public static void main(String[] args) {
	int i = 10;

	while (i > 0) {
		i--;
		System.out.println(i);
	}
    }
}

输出

for循环

public class Loop {
    public static void main(String[] args) {
	for (int i = 0; i < 10 ; i++ ) {
	    System.out.println(i);
	}
    }
}

输出

do…while循环

public class Loop {
    public static void main(String[] args) {
	int i = 10;
	do {
	    i--;
	    System.out.println(i);
	} while (i > 0);
    }
}

输出

数组循环

public class Loop {
    public static void main(String[] args) {
	int[] a = {1,2,3,6};
	for (int i : a) {
	    System.out.println(i);
	}
    }
}

输出

循环控制关键词

break 跳出本循环
continue 跳到下一次循环