java跳出多重循环的三种实现方式

package cn.tedu.day04;

public class Test_2020_4_9 {
	public static void main(String[] args) {
		System.out.println("三种跳出多重循环循环");
		System.out.println("第一种———break 配合标签");

		loop1: // 标签
		for (int i = 1; i < 4; i++) {
			System.out.println(String.format("外层循环%d======", i));
			for (int j = 1; j < 4; j++) {
				if (i == 2 && j == 2) {
					break loop1;// 跳转标签
				}
				System.out.println(String.format("\t内层循环%d", j));

			}
			System.out.println(String.format("%dEND=========", i));
		}
		System.out.println("循环结束");
	}
}

package cn.tedu.day04;

public class Test_2020_4_9 {
	public static void main(String[] args) {
		System.out.println("三种跳出多重循环循环");
		System.out.println("第二种———添加判断变量到布尔表达式中做与运算");
		boolean variable = true;
		for (int i = 1; i < 4 && variable; i++) {
			System.out.println(String.format("外层循环%d======", i));
			for (int j = 1; j < 4 && variable; j++) {
				if (i == 2 && j == 2) {
					variable = false;
					break;
				}
				System.out.println(String.format("\t内层循环%d", j));

			}
			System.out.println(String.format("%dEND=========", i));
		}
		System.out.println("循环结束");
	}

}

package cn.tedu.day04;

public class Test_2020_4_9 {
	public static void main(String[] args) {
		System.out.println("三种跳出多重循环循环");
		System.out.println("第三种———try catch制造异常跳出");
		try {
			for (int i = 1; i < 4; i++) {
				System.out.println(String.format("外层循环%d======", i));
				for (int j = 1; j < 4; j++) {
					if (i == 2 && j == 2) {

						throw new Exception();
					}
					System.out.println(String.format("\t内层循环%d", j));

				}
				System.out.println(String.format("%dEND=========", i));
			}

		} catch (Exception e) {

		} finally {

			System.out.println("循环结束");
		}

	}

}