백준 10818번 자바(JAVA)

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.nio.Buffer;
import java.util.StringTokenizer;
 
public class Main {
 
    
 
    public static void main(String[] args) throws Exception {
 
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(System.out));
        
        
        
        while(true) {
            StringTokenizer str = new StringTokenizer(br.readLine());
            
            
            
            int input1 = Integer.parseInt(str.nextToken());
            int input2 = Integer.parseInt(str.nextToken());
            
            if(input1 ==0 &&  input2==0)
                break;
            
            
            bw.write(input1+input2+"\n");
            
            
            bw.flush();
        }    
            
        
        
        
        
            
        
        
    }
    
    
 
}