字符串连接 (Java代码）

import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.util.*;
public class Main {
		public static void main(String[] args) {
			PrintWriter out=new PrintWriter(new OutputStreamWriter(System.out));
			Scanner sc=new Scanner(System.in);
		 while(sc.hasNext()){
			out.println(sc.next()+sc.next());
			out.flush();
	  }
	}
}