systemin.java

java培训专题

package io;
import java.io.*;
public class SystemIn {
	public static void main(String[] args){
		InputStreamReader isr=new InputStreamReader(System.in);
		BufferedReader br=new BufferedReader(isr);
//-----------------------------------------------------------------------------
		try {
			String strLine;
			while((strLine=br.readLine())!=null){//readLine()方法一次只读取一行文本.
				System.out.println(strLine);
			}
	        br.close();
		} catch (IOException e) {
			e.printStackTrace();
		}
	/*	如果这样写则程序将进入死循环.
	 * 	try {
			    String strLine=br.readLine());
			    while((strLine!=null){//readLine()方法一次只读取一行文本.
				System.out.println(strLine);
			}
	            br.close();
		    } catch (IOException e) {
			     e.printStackTrace();
	    }
	 */
//-----------------------------------------------------------------------------
	}
}