Some simple programs below in this box. Mostly written as examples in class sessions.

A simple applet used twice in a web page.
A check box controls if the combo box can function.
Also an example of passing a parameter to the Applet from HTML code of the web page.
Look at the Html code of the page for how to write Applet Html Tag.
NetBeans project folder (.rar) of this program.

A simple calculator with two input fields, one output field and four buttons for four operations.
The point of interest is this: the event handler of all four buttons is same
(calling a method named islem).
In method islem: How to getSource or getActionCommand of an ActionEvent.

NetBeans project folder (.rar) of this program.

Try entering non-integer values like 2.5 or abc into text field.

NetBeans project folder (.rar) of this program. (JFrame version)

Much like the above. This time it is done with "InputVerifier"s.
Look for InputVerifier property and custom verifier class in the code.

NetBeans project folder (.rar) of this program. (JApplet version)

Can you press the middle button. (There is a quite simple way :)

NetBeans project folder (.rar) of this program.