testwriter.java

该文件在eclipse环境上运行

package test.io;
import java.io.*;
public class TestWriter {

	public static void main(String[] args) throws Exception{
		OutputStream o = 
			new FileOutputStream("test.txt");
		OutputStreamWriter ow = 
			new OutputStreamWriter(o);
		BufferedWriter bw = 
			new BufferedWriter(ow);
		bw.write("中国北京"+"\n");
		bw.write("和谐社会"+"\n");
		bw.close();
		
		o = new FileOutputStream("test.txt", true);
		PrintWriter pw = new PrintWriter(o);
		pw.println("奥运北京");
		pw.println("奥运中国");
		pw.close();
	}
}