JFrame to JApplet Conversion Project | Dragging JButton

Program Description:

This is a simple Java project, a conversion project from JFrame to JApplet which was requested by someone in my Fan Page. I am trying to make the code as simple as possible and as short as possible so it can be understood easily.

Output:

Original Code:

import java.awt.event.*;
import javax.swing.*;

public class Demo extends JFrame implements MouseMotionListener{
JButton btn;
Demo(){
setSize(300, 300);
setVisible(true);
btn = new JButton("Drag me");
getContentPane().setLayout(null);
add(btn);
btn.setBounds(50, 50, 100, 40);
btn.addMouseMotionListener(this);
}
public static void main(String[] args){
new Demo();
}
public void mouseDragged(MouseEvent e) {
int x=(int) getMousePosition().getX();
int y=(int) getMousePosition().getY();
btn.setLocation(x, y);
}
public void mouseMoved(MouseEvent e) {

}

}

Code:

import java.awt.event.*;
import java.awt.*;
import javax.swing.*;

public class DemoApplet extends JApplet implements MouseMotionListener{
 JButton btn = new JButton("Drag Me");
 
 public void init() {
  btn.setBounds(40,40,100,40);
  Container pane = getContentPane();
  FlowLayout flow = new FlowLayout();
  pane.setLayout(flow);
  pane.add(btn);
  btn.addMouseMotionListener(this);
 }
 
 public void mouseDragged(MouseEvent e) {
  int x=(int) getMousePosition().getX();
  int y=(int) getMousePosition().getY();
  btn.setLocation(x, y);
 }
 public void mouseMoved(MouseEvent e) {
 }
}

Creating a simple JTable

Program Description:

Today we are going to create a very simple JTable in Java with inputs which I think this is the shortest, easy-to-understand JTable program you can find in the internet. In this program, there are only three things you need to observe 1.) The Column Names 2.) The Input Data 3.) Adding Scroll Bar. This program will show you how to create those things and add them in the JTable so you can come up with an output similar to the screenshot below and if you have finally understood the whole code, you are now ready to learn the complicated parts of this components. So I hope you'll find this very helpful and don't forget to add comments.

Output:

Code:

/**
 * File: simpleJTable.java
 * Tiltle: Creating a simple JTable
 * Author: http://java-code-complete.blogspot.com/
 */

//Java Core Package
import javax.swing.*;
//Java Extension Package
import java.awt.*;

public class simpleJTable extends JFrame {
 
 //Initializing the Column Names of the Table
 String columnNames[] = {"First Name","Middle Name","Last Name"};
 
 //Initializing the Specific Data input of the Table
 Object data[] [] = {{"Jack","Denzil","Smith"},{"Robert","Smack","Gregory"},{"Stephen","Den","Stash"},{"Evelyn","Baaclo","Kontes"}};

 //Setting up GUI
    public simpleJTable() {
     
     //Setting up the Title of the Window
     super("Creating a simple JTable");
     
     //Creating a JTable with its property
     JTable table = new JTable(data, columnNames);
     table.setPreferredScrollableViewportSize(new Dimension(500, 70));
        table.setFillsViewportHeight(true);
        
        //Create the scroll pane and add the table to it.
        JScrollPane scrollPane = new JScrollPane(table);

     //Exit Property of the Window
     setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

     //Setting up the container ready for the components to be added.
     Container pane = getContentPane();
     setContentPane(pane);

     //Setting up the container layout
     GridLayout grid = new GridLayout(1,0);
     pane.setLayout(grid);
     
     //Adding the Component JScrollPane so the JTable can be visible in the container
     //with Scroll Bar on the right side if JTable input data exceeds the visible count
  pane.add(scrollPane);

     /**Set all the Components Visible.
      * If it is set to "false", the components in the container will not be visible.
      */
     setVisible(true);
     pack(); //Group all the components together
    }
    
 //Main Method
    public static void main (String[] args) {
     simpleJTable pjtf = new simpleJTable();
 }
}