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    • Sep 28, 2021

Java Swing Assignment Help

Are you struggling with java Swing Assignment and have no idea where to begin , want someone to do it for you ,just look at our services like computer science assignment Help, programming assignment, Swing assignment, Java assignment help, java Desktop Application using swing.


First of All You must know about What is Swing and how it works?


Swing library is an official Java GUI toolkit released by Sun Microsystems.

The main characteristics of the Swing toolkit

  • Platform independent

  • Customizable

  • Extensible

  • Configurable

  • Lightweight


Swing consists of the following packages

  • javax.swing

  • javax.swing.border

  • javax.swing.colorchooser

  • javax.swing.event

  • javax.swing.filechooser

  • javax.swing.plaf

  • javax.swing.plaf.basic

  • javax.swing.plaf.metal

  • javax.swing.plaf.multi

  • javax.swing.plaf.synth

  • javax.swing.table

  • javax.swing.text

  • javax.swing.text.html

  • javax.swing.text.html.parser

  • javax.swing.text.rtf

  • javax.swing.tree

  • javax.swing.undo


Swing is probably the most advanced toolkit on this planet. It has a rich set of widgets.

From basic widgets like Buttons, Labels, Scrollbars to advanced widgets like Trees and

Tables.


Swing is written in 100% java.

Swing is a part of JFC, Java Foundation Classes. It is a collection of packages for creating

full featured desktop applications. JFC consists of AWT, Swing, Accessibility, Java 2D, and

Drag and Drop. Swing was released in 1997 with JDK 1.2. It is a mature toolkit.

The Java platform has Java2D library, which enables developers to create advanced 2D

graphics and imaging.


There are basically two types of widget toolkits.

• Lightweight

• Heavyweight


A heavyweight toolkit uses OS's API to draw the widgets.

For example Borland's VCL is a heavyweight toolkit.

It depends on WIN32 API, the built in Windows application

programming interface.

On Unix systems, we have GTK+ toolkit, which is built on top of

X11 library. Swing is a lightweight toolkit. It paints it's own widgets. It is in fact the only

lightweight toolkit I know about.


SWT library


There is also another GUI library for the Java programming language. It is called SWT. The Standard widget toolkit. The SWT library was initially developed by the IBM corporation.

Now it is an open source project, supported by IBM. The SWT is an example of a

heavyweight toolkit. It lets the underlying OS to create GUI. SWT uses the java native

interface to do the job. The main advantages of the SWT are speed and native look and feel.

The SWT is on the other hand more error prone. It is less powerful then Swing. It is also

quite Windows centric library.


Java Swing first programs

we will program our first programs in Swing toolkit. The examples are going

to be very simple. We will cover some basic functionality.

Our first example

In our first example, we will show a basic window.

import javax.swing.JFrame;

public class Simple extends JFrame {

public Simple() {

setSize(300, 200);
setTitle("Simple");
setDefaultCloseOperation(EXIT_ON_CLOSE);
}

public static void main(String[] args) {

Simple simple = new Simple();

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simple.setVisible(true);

}
}

While this code is very small, the application window can do quite a lot. It can be resized,

maximized, minimized. All the complexity that comes with it has been hidden from the

application programmer.

import javax.swing.JFrame;

Here we import the JFrame widget. It is a toplevel container, which is used for placing other


widgets.setSize(300, 200);
setTitle("Simple");

This code will resize the window to be 300px wide and 200px tall. It will set the title of the

window to Simple.

setDefaultCloseOperation(EXIT_ON_CLOSE);

This method will close the window, if we click on the close button. By default nothing

happens.



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