streamtest.java

孙鑫JAVA从入门到精通配套练习程序。所有程序都实际运行过

import java.io.*;
class StreamTest
{
	public static void main(String[] args) throws IOException
	{
		/*
		int data;
		while((data=System.in.read()) != -1)
		{
			System.out.print((char)data);
		}
		*/
		FileOutputStream fos = new FileOutputStream("1.txt");
		//fos.write("http://www.mybole.com.cn".getBytes());
		//fos.close();
		
		byte b = 3;
		int i = 13;
		char c = 'a';
		float f = 12.5f;
		DataOutputStream dos = new DataOutputStream(fos);
		dos.writeByte(b);
		dos.writeInt(i);
		dos.writeChar(c);
		dos.writeFloat(f);
		dos.close();
		
		
		/*
		byte[] data = new byte[100];
		FileInputStream fis = new FileInputStream("1.txt");
		int len = fis.read(data);
		System.out.println(new String(data, 0, len));
		*/
		FileInputStream fis = new FileInputStream("1.txt");
		DataInputStream dis = new DataInputStream(fis);
		System.out.println(dis.readByte());
		System.out.println(dis.readInt());
		System.out.println(dis.readChar());
		System.out.println(dis.readFloat());
	}
}