黑马程序员-学习日志-操作基本数据类型的数据流

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import java.io.*;
class DataStreamDemo 
{
	public static void main(String[] args) throws IOException
	{
		//writeData();
		//readData();
		//writeUTFDemo();
		readUTFDemo();
	}
	public static void readUTFDemo() throws IOException
	{
		DataInputStream dis = new DataInputStream(new FileInputStream("utfdate.txt"));

		String s = dis.readUTF();

		System.out.println(s);
		dis.close();
	}

	public static void writeUTFDemo() throws IOException
	{
		DataOutputStream dos = new DataOutputStream(new FileOutputStream("utfdate.txt"));

		dos.writeUTF("你好");

		dos.close();
	}


	public static void readData() throws IOException
	{
		DataInputStream dis = new DataInputStream(new FileInputStream("data.txt"));

		int num = dis.readInt();
		boolean b = dis.readBoolean();
		double d = dis.readDouble();

		System.out.println("num="+num);
		System.out.println("b="+b);
		System.out.println("d="+d);

		dis.close();
	}

	public static void writeData() throws IOException
	{
		DataOutputStream dos = new DataOutputStream(new FileOutputStream("data.txt"));

		dos.writeInt(234);
		dos.writeBoolean(true);
		dos.writeDouble(9887.543);

		dos.close();
	}
}
           

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