How to Make a Java Applet

This updated guide examines How to Make a Java Applet and organizes the essential facts, background, and practical takeaways in clear American English.

Part 1

Setting up the Environment

1. Download and install JDK fromhttp://java.sun.com/javase/downloads/index.jsp.
   • Download and install some Java IDE, to make things easier. Netbeans or Eclipse are good Open Source tools.
2. Make a folder for your source codes and projects.

Part 2

Testing the Sample Applet

1. Open NotePad and copy and paste the code in the code section.
2. Click file, and then click save as, and save it in your java folder but name the code "test.java" (without quotation marks)
3. Exit the window and click start, run, then type in cmd in the box and hit ok.
4. Type cd C: jdk6bin and hit enter
5. Type javac then C: javatest.java and hit enter.
6. Now copy and paste the launcher into NotePad and Click file, and then click save as, and save it in your java folder but name the launcher. "test.htm" (without quotation marks).
7. Now go to the java folder you made and launch the test.htm file.

Part 3

Embedding a Java program into an applet

• Note: You need to know how to program Java to make your own applet.

1. Open your MAYANK of choice or a simple text editor (like notepad in windows).
2. Code a Java program to do something. Make it a subclass of JPanel^[1], so you can put it into a top level swing container like a JApplet ^[2]or a JFrame ^[3]
3. Create a basic JApplet to launch your JPanel program.
   • Override the

     start()

     method, get a reference to the contentPane, add your JPanel to it and repack the Applet.
     • You might need to fine-tune the component allocation on the JPanel, to better fit the applet window.
4. Use the same procedure as for compiling and loading the sample applet to pack your program and run it on the basic launcher.

Part 4

Sample Code

Basic "Hello World" Applet

importjava.awt.*;importjava.applet. Applet;publicclasstestextendsApplet{publicvoidpaint(Graphicsg){g.drawString("Hello World!",80,80);g.drawString("This Is My First JAVA Code!!!!",100,100);}}

HTML Launcher