计算a+b的和

每行包行两个整数a和b

对于每行输入对应输出一行a和b的和
输入
1 5
输出
6

JAVA代码：

（一）

import java.util.*;
public class Main{
    public static void main(String[]args){
        Scanner input = new Scanner(System.in);
        while(input.hasNext()){
            int a = input.nextInt();
            int b = input.nextInt();
            int result = a+b;
            System.out.println(result);
        }
    }
}

（二）
import java.io.*;

public class Main{ 

public static void main(String[]args)throws Exception {

 BufferedReader bu = new BufferedReader(new InputStreamReader(System.in));

 String line =null;

 while((line=bu.readLine())!=null){ 

String []str=line.split(" +"); 

int a=Integer.parseInt(str[0]); 

int b=Integer.parseInt(str[1]); 

System.out.println(a+b); 

} bu.close();

 }}

（三）

import java.util.Scanner;

public class Main{
    public static void main(String[] args){
    	add();
    }
    public static void add(){
    	Scanner in = new Scanner(System.in);
        while(in.hasNext()){
            int i = in.nextInt();
        	int j = in.nextInt();
            int s = 0;
            s = i + j;
          System.out.println(s);
            
        }
	}
    
}