Professor Kit Romano's Web Site

 



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Welcome
Definition of Program
Variable Types
Understanding Memory
Declaring Variables
Simple Commands
Concatenation and Strings
Sleep-Threads-Try Catch
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Java simplified
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Reading Data From File
Overview of Applets
Excellent Graphics Applet
Online Reference
Nested if statements
Arrays
Sorting Arrays
Using Strings
Functions
Top 20 Replies 
First program 211
Important Class Example
JAVA in SDK Environment
Understanding OOP
OOP simple example
Recursion example
Example of Inheritance
     and use of JTextArea



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Programming Examples

 

 

                                                

 

Program 2-1

// find 3rd digit to right of a decimal point by Hing Tze

import java.io.*;
import javax.swing.*;
import java.awt.event.*;
import java.awt.*;
public class Application1 
{
     public Application1()
       {
 
         double number = 1192.328984;
         int answer;
         number = number * 1000; //shiftpoint 3 places 
         answer = (int) number % 10; // convert a double 
                                     // variable to int type
                                     //take the remainder 
                                     // number/10
         JOptionPane.showMessageDialog(null,"The answer 
                                 is: " + answer);
       }

   public static void main(String args[])
       {
         Application1 app = new Application1();
         System.exit(0); 
       } 

}