package java_Files;

import java.io.*;

public class BinFileWrite {

public static void main(String[] args) {

// TODO Auto-generated method stub

writeFile();

System.out.println("done.");

}

public static void writeFile() {

// TODO Auto-generated method stub

FileOutputStream fos = null;// 节点类，负责写字节

BufferedOutputStream bos = null;// 装饰类，负责写字节数据到缓冲区

DataOutputStream dos = null;// 转化类，负责数据类型到字节转化

// 三者之间的关系：DataOutputStream（BufferedOutputStream（FileOutputStream））

try {

fos = new FileOutputStream("c:/temp/def.dat");

bos = new BufferedOutputStream(fos);

dos = new DataOutputStream(bos);

dos.writeUTF("a");

dos.writeInt(20);

dos.writeInt(180);

dos.writeUTF("b");

} catch (Exception ex) {

ex.printStackTrace();

} finally {

try {

dos.close(); // 关闭最后一个类，底层所有流自动关闭

} catch (Exception ex) {

ex.printStackTrace();

}

}

}

}