java多组数据输入

读入输出

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.util.StringTokenizer;

public class Main {
	public static BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
	public static PrintWriter out = new PrintWriter(System.out);
	public static StringTokenizer st = new StringTokenizer("");

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

		String line;
		while ((line = in.readLine()) != null) {
			st = new StringTokenizer(line);
			
		}
		out.close();
	}
}