当数据比较庞大的时候，需要循环遍历某个数据的时候可用

for (int ab= 0;ab<10000;ab++){if (ab ==7){//当找到7的时候，结束循环Log.v("map","..ab ==7....11......"+ab);break;}else {Log.v("map","......11..else...."+ab);}
}

设定范围 

for (int c=0;c<52;c++){if (suiji<32||suiji>40){suiji = Integer.parseInt(makeCheckCode());Log.e("lgq","随机数==== "+suiji);}else {Log.e("lgq","随机数==333== "+suiji);break;}
}

 

跳过

continue；

跳出当前的多重嵌套循环

int arr[][] ={{1,2,3},{4,5,6,7},{9}};

boolean found = false;

for(int i=0;i<arr.length&&!found;i++)       {

        for(intj=0;j<arr[i].length;j++){

              System.out.println(“i=” + i + “,j=” + j);

              if(arr[i][j] ==5) {

                      found =true;

                      break;

              }

        }

}