datastreamexp.java

Java课堂练习

/**
 * @(#)DataStreamExp.java
 *
 *
 * @author 
 * @version 1.00 2007/11/15
 */
import java.io.*;

public class DataStreamExp {
        
    /**
     * Creates a new instance of <code>DataStreamExp</code>.
     */
    public DataStreamExp() {
    }
    
    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        // TODO code application logic here
        try {
        //FileOutputStream  fos=new FileOutputStream("4.txt");
        DataOutputStream  dos=new DataOutputStream(new FileOutputStream("4.txt"));
        dos.writeBoolean(true);
        dos.writeShort(12);
        dos.writeInt(100);
        dos.writeLong(123456);
        dos.writeFloat(3.1415926f);
        dos.writeDouble(987545321.12324);
        dos.writeChar('G');        
        dos.writeUTF("you are a teacher");
        dos.close();
        
        }
        catch (FileNotFoundException fe) {
        System.err.println("file not find!");	
        }
        catch (IOException ioe) {
        System.out.println("there is error in write!");
        }
        try {
        //FileInputStream  fis=new FileInputStream("4.txt");
        DataInputStream dis=new DataInputStream(new FileInputStream("4.txt"));
        System.out.println(dis.readBoolean());
        System.out.println(dis.readShort());
        System.out.println(dis.readInt());
        System.out.println(dis.readLong());
        System.out.println(dis.readFloat());
        System.out.println(dis.readDouble());
        System.out.println(dis.readChar());    
        System.out.println(dis.readUTF());
        dis.close();        
        }
        catch (FileNotFoundException fe) {
         System.out.println("file not find!");
        }
        catch (IOException ioe) {
         System.out.println("there is error in read!");
        }           
    }
}