java programming ( 101-200 primes between statistics )

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k + + should be i + +?
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your loop i try.
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  public class LX2 {
  
  	/**
  	 * @param args
  	 */
  	public static void main(String[] args) {
  		// TODO Auto-generated method stub
  
  		int i,k,count=0;
  		for(k=101;k<=200;k++){
  			for(i=2;i<Math.sqrt(k);i++){
  				if(k%i==0){
  					break;
  				}
  			}
  			if(i>Math.sqrt(k)){
  				count++;
  			}
  		}
  		System.out.println("素数个数:"+count);
  	}
  
  }
  
  

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Why can not produce results, be sure to use Boolean expressions ?