java中的保留字goto，目前没有使用，但可以用break和continue结合标签达到类似goto的效果。具体说明见下面代码后的注释

格式如下：

label1:

for(){

        label2:

        for() {

                continue label1;//跳过label1当前的循环并开始label1的下一次循环。

                break label1;//中断label1循环

                continue label2;//跳过label2当前的循环并开始label2的下一次循环，效果和continue一样

                break label2;//中断label2循环，但外层label1循环还会继续

        }

}

注意，使用break中断了哪个for循环，对应for循环的步进也不会执行，需要特别注意可能导致的死循环问题，请参考test2()最后输出的i。

/**
 * 输出乘法口诀
 * @author Kent Chiang
 *
 */

public class LabelItr {

        public static void main(String[] args) {

                //test1();

                test2();

        }

        public static void test1() {

                outer:

                for(int i = 0;i <= 9;i++) {

                        inner:

                        for (int j = i; j <= 9;j++) {

                                if (j == 6) {

                                        System.out.println("");

                                        //continue inner;

                                        continue outer;

                                }

                        System.out.print(i + "*" + j + "=" + (i*j) + "; ");

                        }

                System.out.println("");

                }

        }

        public static void test2() {

                int i = 0;

                outer:

                for(;i <= 9;i++) {

                        inner:

                        for (int j = i; j <= 9;j++) {

                                if (j == 6) {

                                //System.out.println("");

                                break inner;

                                }

                        System.out.print(i + "*" + j + "=" + (i*j) + "; ");

                        }

                        System.out.println("");

                }

                System.out.println();

                System.out.println(i);

        }

}