systemin.java

一个类似C中的printl 开源的Java 文件

package com.kettas.common;
import java.io.*;

public class SystemIn{
	public static int readInt(){
		BufferedReader br = null;
		try{
			br = new BufferedReader( new InputStreamReader( System.in) ) ;
			String line = br.readLine();
			int ret = Integer.parseInt( line );
			return ret ;	
		}catch( Exception e ){
			e.printStackTrace();
			return -1 ;
		}
	}	
	
	public static double readDouble(){
		BufferedReader br = null;
		try{
			br = new BufferedReader( new InputStreamReader( System.in) ) ;
			String line = br.readLine();
			double ret = Double.parseDouble( line );
			return ret ;	
		}catch( Exception e ){
			e.printStackTrace();
			return -1 ;
		}
	}
	
	public static String readString(){
		BufferedReader br = null;
		try{
			br = new BufferedReader( new InputStreamReader( System.in) ) ;
			String line = br.readLine();
			return line ;	
		}catch( Exception e ){
			e.printStackTrace();
			return null;
		}
	}
}

class Test{	
	public static void main( String args[] ){
		int i = SystemIn.readInt();
		double d = SystemIn.readDouble();
		String s = SystemIn.readString();
		System.out.println( i + "\t" + d + "\t" + s ) ;
	}	
}