JAVA嵌套循环的break,continue,return

package loop;

public class LoopTest {

	/**
	 * 注意：在JAVA中需要使用标签的唯一理由是因为有循环嵌套存在，而且想从多层循环中break 或continue
	 * 如果只是想简单的退出方法，可以直接用return;
	 * @param args
	 */
	public static void main(String[] args) {
		LoopTest loop = new LoopTest();
//		loop.testLoop1();
		loop.testLoop2();

	}
	
	public void testLoop2(){
		int i = 0;
		outer:
			while(true){
				System.out.println("Outer while loop");
				while(true){
					i++;
					System.out.println("i="+i);
					if(i==1){
						System.out.println("continue");
						continue;
					}
					if(i==3){
						System.out.println("continue outer");
						continue outer;
					}
					if(i==5){
						System.out.println("break");
						break;
					}
					if(i==7){
						System.out.println("break outer");
						break outer;
					}
				}
			}
	}
	
	public void testLoop1(){
		int i = 0;
		outer:
		for (; true;) {
			inner:
			for (;i<10; i++) {
				System.out.println("i="+i);
				if(i==2){
					System.out.println("continue");
					continue;
				}
				if(i==3){
					System.out.println("break");
					i++;
					break;
				}
				if(i==7){
					System.out.println("continue outer");
					i++;
					continue outer;
				}
				if(i==8){
					System.out.println("break outer");
					break outer;
				}
				for (int j = 0; j < 5; j++) {
					if(j==3){
						System.out.println("continue inner");
						continue inner;
					}
				}
			}
		}
	}

}