跳转语句

public class Example3_7{
public static void main(String args[]){
  int sum=0,i=0,max=8888,number=7;
  while(true){
   i++;
   sum=sum+i;
   if(sum>=max)
   break;
  }
  System.out.println("1+2+...n<"+max+"的最大整数n:"+(i-1));
  for(i=1,max=200,sum=0;i<=max;i++){
   if(i%number!=0){
    continue;
   }
   sum=sum+i;
  }
  System.out.println(max+"内能被"+number+"整除的数字之和:"+sum);
}
}

import java.util.Scanner;
public class Example3_8{
public static void main(String arg[]){
  int n,start,end,middle;
  int a[]={-2,1,4,5,8,12,17,23,45,56,90,100};
  start=0;
  end=a.length;
  middle=(start+end)/2;
  int count=0;
  Scanner reader=new Scanner(System.in);
  System.out.print("请输入一个整数");
  n=reader.nextInt();
  while(n!=a[middle]){
   if(n>a[middle]){
    start=middle;
   }
   else if(n<a[middle]){
    end=middle;
   }
   middle=(start+end)/2;
   count++;
   if(count>a.length/2)
   break;
  }
  if(count>a.length/2)
  System.out.println(n+"不在数组中");
  else
  System.out.println(n+"是数组中的第"+middle+"个元素");
}
}