Showing Results in Screen Monitor, Reading Data From Keyboard Input

 Showing Results in Screen Monitor

To display the results to the screen can be done with a few commands, such as:

A. Console environment
using the method print () or println () in the class system in the java.lang package structure. This package is the default package for all java apps, so it does not need to be imported into the program.

B. Using the GUI components
using JOptionPane class that is a component of the package javax.swing. Both the output and the input (showMesageDialog () or showInputDialog ()).


 Reading Data From Keyboard Input

 To display the results to the screen can be done with a few commands, such as:

 A.Console environment
using the method print () or println () in the class system in the java.lang package structure. This package is the default package for all java apps, so it does not need to be imported into the program.

B.Using the GUI components
using JOptionPane class that is a component of the package javax.swing. Both the output and the input (showMesageDialog () or showInputDialog ()).