How to create a dialog-based program in Java?

by Vilchor G. Perdido (eturo)

First in our code is to import the package in the Java API where the JOptionPane is. And it is found at the javax.swing package, so will create a code to import this package. It look like this...

import javax.swing.JOptionPane;

or you may write the code above like this;

import javax.swing.*; //note that the asterisk (*) indicate that all the classes and methods inside this package will be automatically used or include by the program

Second, create a code to define the class name (Note: The class name you entered a while ago is always the same the class name you will write in the code.) Below the class declaration, put a paired of open and close curly bracket where we will put the variables and methods later to be used by our program. The whole class is denoted by the light blue color in the code pad in the BlueJ text editor.

import javax.swing.JOptionPane;

public class MyFirstGUIProgram

{ 

     your code here

}

 

Third, after defining your class, the next step is to create the main method to be able to execute by the program. Whatever statements you declared inside the main method will be executed. The main method of our program will be indicated by the light yellow color the code pad window. To create the main method of our program, do this inside the class:

import javax.swing.JOptionPane; //package declaration

public class MyFirstGUIProgram //class definition

{

     public static void main(String[] args) //the main method

     {

         your code here

     }

}

Now, we are ready to create the statement that will display a dialog box with a message. To do this, we have the following syntax in creating a message dialog box.

JOptionPane.showMessageDialog(null,

"your message here","text in the title bar", type of dialog box ,);

Explanation:

 


So, in our code:

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Update Windows

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Microsoft Security Essentials

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Back Up Your Hard Drive

Be it the simple Windows Backup or other automated offsite backup tool like Crashplan, backups are crucial for any computer user. And it is not just about maintenance, it’s about having access to your files when your computer stops showing any signs of life. And this is one of the most important maintenance you will have to carry out. 

Clean Up Your Temporary Files

It is normal for Windows to have a lot of temporary files stored on your hard drive, mostly from your web surfing, and it is a good idea to clean these up regularly. A great tool for this job is CCleaner, and you can use this to clean up your PC manually or set up an automated schedule, keeping your computer free of all the temporary clutter. 

Completely Uninstall Programs

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Thanks to this link.