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0.0

import javax.swing.JOptionPane;
public class Output {
     public static void main( String arg[] )
     {
         String input;
         int number;
        
         input = JOptionPane.showInputDialog("Enter integer:");
         number = Integer.parseInt( input );
        
         if( number != 7 )
             System.out.println("Welcome");
            
         if((number % 5 ) == 0)
             System.out.println("To Java Programming");
     }
}

import javax.swing.JOptionPane;
public class Miracle{
public static void main( String arg[] )
{
     String number;
     String result;
    
     int x;
    
     number = JOptionPane.showInputDialog( "Enter integer:" );
    
     x = Integer.parseInt( number );
    
    
     if ( x % 2 == 0 )
         result ="Number is Miracle!";
        
        
     if ( x % 2 == 1 )
         result ="Number is Even!";
        
        
         JOptionPane.showMessgeDialog( null, result, "Result", JOptionPane.PLAIN_MESSAGE );
        
         System.exit(0);
}
}

我草

import javax.swing.JOptionPane;
public class Calculate2{
    
     public static void main( String arg[] )
     {
         String firstNumber;
         String secondNumber;
         String thirdNumber;
        
         int number1;
         int number2;
         int number3;
        
         int sum;
         int average;
         int largest;
         int product;
         int smallest;
        
         firstNumber = JOptionPane.showInputDialog("no.1");
         secondNumber = JOptionPane.showInputDialog("no.2");
         thirdNumber = JOptionPane.showInputDialog("no.3");
        
         number1 = Integer.parseInt(firstNumber);
         number2 = Integer.parseInt(secondNumber);
         number3 = Integer.parseInt(thirdNumber);
        
         sum = number1 + number2 + number3;
         average = sum/3;
         product = number1*number2*number3;
        
         String result;
         result = "For the numbers"+number1+","+number2+","+number3+"\n"+"The sum is"+sum+"\n"+"The product is"+product+"\n"+"The average is"+average;
        
        
         JOptionPane.showMessageDialog(null,result,"Calculation Results",JOptionPane.INFORMATION_MESSAGE);
        
         System.exit(0);
            
     }
}

import javax.swing.JOptionPane;
public class area{
     public static void main( String arg[] )
{
     String number;
    
    
     double radius;
     number = JOptionPane.showInputDialog( "Enter radius" );
    
     radius = Double.parseDouble( number );
    
    
     String result;
     result = "diameter is"+ 2*radius+ "\n" + "area is" + ( Math.PI*radius*radius ) + "\n" +"circumference is" + ( 2*Math.PI*radius );
    
     JOptionPane.showMessageDialog( null, result,"Calculation Results", JOptionPane.INFORMATION_MESSAGE );
     System.exit(0);
     }
    
}

表示有学java的否？
来看看

          "Digits in " + originalNumber, JOptionPane.INFORMATION_MESSAGE );
       System.exit( 0 );
    }
} // end class Five
/*
**************************************************************************
* (C) Copyright 2002 by Deitel & Associates, Inc. and Prentice Hall.      *
* All Rights Reserved.                                                    *
*                                                                         *
* DISCLAIMER: The authors and publisher of this book have used their      *
* best efforts in preparing the book. These efforts include the           *
* development, research, and testing of the theories and programs         *
* to determine their effectiveness. The authors and publisher make        *
* no warranty of any kind, expressed or implied, with regard to these     *
* programs or to the documentation contained in these books. The authors *
* and publisher shall not be liable in any event for incidental or        *
* consequential damages in connection with, or arising out of, the        *
* furnishing, performance, or use of these programs.                      *
**************************************************************************
*/

import java.awt.*;
import javax.swing.*;
public class DrawRectangle2 extends JApplet {
    int upperLeftX; // upper-left x coordinate
    int upperLeftY; // upper-left y coordinate
    int width;       // rectangle width
    int height;      // rectangle height
    {
        String ux;
        String uy;
        String wh;
        String ht;
       
        ux = JOptionPane.showInputDialog( "Enter the upperLeftX" );
        uy = JOptionPane.showInputDialog( "Enter the upperLeftY" );
        wh = JOptionPane.showInputDialog( "Enter the width" );
        ht = JOptionPane.showInputDialog( "Enter the height" );
       
        upperLeftX = Integer.parseInt(ux);
        upperLeftY = Integer.parseInt(uy);
        width = Integer.parseInt(wh);
        height = Integer.parseInt(ht);
    }
            public void paint( Graphics g )
    {
       g.drawRect( upperLeftX, upperLeftY, width, height );
    }
} 

<html>
<applet code="DrawRectangle2.class"width="300"height="45">
</applet>
</html>

= =程序盲路过……

昨天我就弄了这么点东西

看不懂