Goto statements in Java

  
 

   
  

  
List<Integer> nums = new ArrayList<Integer>();
   
  

  
//计算从2开始，到upper的所有质数
   
  

  
outer:
   
  

  
for(int i=2;i<=upper;i++)
   
  

  
{
   
  

  
//用i除以从2开始、到i的平方根的所有数
   
  

  
for(int j=2;i<Math.sqrt(i);j++)
   
  

  
{
   
  

  
//如果可以整除，则说明这个数不是质数
   
  

  
if(i!=2 && i%j ==0)
   
  

  
{
   
  

  
continue outer;
   
  

  
}
   
  

  
}
   
  

  
nums.add(i);
   
  

  
}
  
 

The above program is used to find all the prime numbers from 2 to upper and add them to the ArrayList. Outer: "is a label name of its own definition, through break or continue to jump to this position, is generally used to jump out of the loop." This syntax is similar to goto in the C language.


From for notes (Wiz)

Goto statements in Java