java yardım

 
   
  import java.io.IOException; 
  import java.io.*; 
   
  class asal{	 
  	public static void main (String args[]){	 
  		 
  		Double double_i, double_sayac, double_asal; 
  		int int_i, int_sayac, int_asal, asalTest; 
  		String GelenVeri= "0"; 
  		 
  		asallari_yaz();	 
  		 
  		while(Integer.parseInt(GelenVeri) != 1){			 
  			    try { 
  			    	InputStreamReader inStream = new InputStreamReader( System.in ) ; 
  			    	BufferedReader buff = new BufferedReader(inStream ); 
  			    	 
  			    	System.out.print("cikmak icin 1'e basiniz\nBir sayi girin:"); 
  			    	GelenVeri = buff.readLine() ; 
  			    	 
  			    	System.out.println("Girdiginiz veri :" + GelenVeri ); 
  			    	 
  			   	 
  			    	 
  		      } catch (IOException ex) { 
  		      		System.err.println("Bir sorun oluştu !!!"); 
  		      } 
  		      
  		     
  			double_i = Double.parseDouble(GelenVeri); 
  			 
  			double_sayac = 1.00; 
  			asalTest = 0; 
  			 
  			while (++double_sayac <= double_i-1){ 
  				if (double_i%double_sayac != 0){ 
  					 
  				} 
  				else{ 
  					double_asal = double_i/double_sayac;				 
  					 
  					int_i = double_i.intValue(); 
  					int_sayac = double_sayac.intValue(); 
  					int_asal = double_asal.intValue(); 
  					 
  					System.out.println("-" + int_i + " / " + int_sayac + " = " + int_asal  + " isleminden kalan sifirdir."); 
  					asalTest++; 
  				} 
  			} 
  	 
  			if (asalTest != 0)				 
  				System.out.println("sayi asal degil !!!\n"); 
  			else if (asalTest <= 0) 
  				System.out.println("sayi asal !!!\n"); 
  			else  
  				System.out.println("1 sayi asal sayılmıyor !!!\n"); 
  			 
  		} 
  	} 
  	 
  	static void asallari_yaz() 
  	{ 
  		System.out.println("1-8000 arasindaki satilar icin; ") ; 
  		System.out.println("http://tr.wikipedia.org/wiki/Asal_say%C4%B1lar_listesi\n");	 
  		     
  		System.out.println("Yuzden kucuk asal sayilar:"); 
  		System.out.println("2, 3, 5, 7, 11, 13, 17"); 
  		System.out.println("19, 23, 29, 31, 37, 41"); 
  		System.out.println("43, 47, 53, 59, 61, 67"); 
  		System.out.println("71, 73, 79, 83, 89, 97 'dir.\n"); 
  	} 
   
  }