java学习之旅23--break和continue_带标签的break和continue

1. break和continue
   • break:跳出循环
   • continue:结束本次循环，继续下次循环
   • 
     
   • 代码

   • //生成0-100的随机数，直到生成88为止，解释循环public class TestBreakContinue {public static void main(String[] args) {System.out.println("BEGIN");int count = 0;while(true){count++;int num = (int)(Math.random()*101);if(num==88){break;}}System.out.println("Game over:"+count);}}

     
     

     //把100-150之间不能被3整除的数输出public class TestBreakContinue {public static void main(String[] args) {for(int i=100;i<=150;i++){if(i%3==0){continue;}System.out.print(i+"\t");}}}

     
     
     
2. 带标签的break和continue
   • 
     
   • 打印1-100的质数

   • //打印1-100之间的质数public class TestBreakContinue {public static void main(String[] args) {for(int j=1;j<=100;j++){if(isPrime(j)){System.out.print(j+"\t");}}}public static boolean isPrime(int a){boolean flag = true;for(int i=2;i<a/2;i++){if(a%i==0){flag = false;break;}}return flag;}}