PrintWriter 博客分类： JAVA BufferedWriter PrintWriter IO

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import java.io.*;
import java.text.SimpleDateFormat;
import java.util.Formatter;
import java.util.Scanner;
import java.io.*;
import java.util.Date;

package socket;

import java.io.*;
import java.text.SimpleDateFormat;
import java.util.Formatter;
import java.util.Scanner;
import java.io.*;
import java.util.Date;

public class Test {
    public static void main(String[] args) throws Exception {
        // FileOutputStream true表示尾部追加
        FileOutputStream fos = new FileOutputStream("d:/tmp.txt", true);
        OutputStreamWriter osw = new OutputStreamWriter(fos);

        // BufferedWriter bw = new BufferedWriter(osw);
        PrintWriter pw = new PrintWriter(osw);

        pw.println("两只小蜜蜂啊！");
        // bw.write("飞到花丛中 啊");
        // bw.newLine();
        // bw.write(new SimpleDateFormat("yyyy-MM-dd 24HH:mm:ss").format(new Date()));
        // bw.close();
        pw.print(new Date());// 注意print和println
        pw.println(Math.random());
        pw.close();

    }
}


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