datastream.java

用java实现数据的IO操作~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

package cn.edu.csu.datastream;

import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;

public class DataStream {

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		File f = new File(".\\systemfile\\file3.txt");
		try {
			f.createNewFile();
			FileInputStream in = new FileInputStream(f);
			FileOutputStream out = new FileOutputStream(f);
			DataInputStream dis = new DataInputStream(in);
			DataOutputStream dos = new DataOutputStream(out);
			dos.writeBoolean(false);
			dos.writeByte(65);
//			dos.writeBytes("Bytes");
			dos.writeChar(97);
//			dos.writeChars("Chars");
			dos.writeDouble(23.12);
			dos.writeInt(23);
			dos.writeUTF("UTF");
			dos.close();

			System.out.println(dis.readBoolean());
			System.out.println((char)dis.readByte());
			System.out.println(dis.readChar());
			System.out.println(dis.readDouble());
			System.out.println(dis.readInt());
			System.out.println(dis.readUTF());
			dis.close();
		} catch (IOException e) {
			System.out.println(e.getMessage());
		}
	}

}