bufferdemo.java

Java面向对象编程(随书配套源代码) 阐述了面向对象编程的思想

package chapter13;
import java.io.*;
public class BufferDemo
{
	public static void main(String args[ ]) throws IOException
   	{
   		String line;
   		String str="Welcome to the Java World!";
   		BufferedWriter bWriter=new BufferedWriter(new  FileWriter("demo.txt"));
   		bWriter.write(str,0,str.length());
   		bWriter.flush( );
   		System.out.println("成功写入demo.txt!\n");
   		BufferedReader bReader=new BufferedReader(new FileReader("demo.txt"));
   		line=bReader.readLine( );
   		System.out.println("从demo.txt读取的内容为:");
   		System.out.println(line);
 	}
}