driver.java

Java程序设计(美) David D. Riley著 机械工业出版社 书籍配套 代码

import java.io.*;

/** Program to write then reada new binary file, called example.bin  (Figures 13.15 & 13.17)
 *  Author: David Riley
 *  Date: January, 2005
 */
public class Driver  {

	public Driver()   {
		try{
			FileOutputStream outStream;
			DataOutputStream dataStream;
			outStream = new FileOutputStream( "example.bin" );
			dataStream = new DataOutputStream( outStream );
			dataStream.writeInt( 12 );
			dataStream.writeBoolean( true );
			dataStream.writeDouble( 98.7 );
			dataStream.writeUTF( "hello world" );
			dataStream.writeChar('Z');
			dataStream.flush();
			dataStream.close();
		}
		catch (IOException e)  {
			System.out.println("ERROR writing." );
		}
        
        try {
            int inInt;
            boolean inBool;
            double inDouble;
            String inStr;
            char inCh;
            FileInputStream inStream;
            DataInputStream dataStream;
            inStream = new FileInputStream( "example.bin" );
            dataStream = new DataInputStream( inStream );
            
            inInt = dataStream.readInt();
            inBool = dataStream.readBoolean();
            inDouble = dataStream.readDouble();
            inStr = dataStream.readUTF();
            inCh = dataStream.readChar();
            dataStream.close();
            
            System.out.println( inInt );
            System.out.println( inBool );
            System.out.println( inDouble );
            System.out.println( inStr );
            System.out.println( inCh );
       }
        catch (IOException e)  {
            System.out.println("ERROR reading." );
        }

	}
}