testoutputstream.java

自己做的一个QQ聊天系统

package test.io;

import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;

public class TestOutputStream {
	public static void main(String[] args) throws IOException {
		// TODO Auto-generated method stub
		OutputStream out = new FileOutputStream("1.dat");
		out.write(1);
		out.close();
	    InputStream in = new FileInputStream("1.dat");
		byte[] b =new byte[10];
		int len = in.read(b);
		in.close();
		
		System.out.println("读取长度:" + len);
		System.out.println(b[0]);
		
		out = new FileOutputStream("1.dat");
		DataOutputStream dataout =new DataOutputStream(out);
		dataout.writeChars("孟");
		dataout.writeBoolean(true);
		dataout.writeInt(01234);
		dataout.writeShort(56789);
		dataout.close();
		
		in = new FileInputStream("1.dat");
		DataInputStream datain = new DataInputStream(in);
		System.out.println(datain.readChar());
		System.out.println(datain.readBoolean());
		System.out.println(datain.readInt());
		System.out.println(datain.readShort());
        datain.close();	
        }

}