How Do I Define and Use Global Variables in Java?

Defining Global Variables in Java

In Java, static variables, also known as global variables, are a useful mechanism for sharing data across the entire application. They are accessible from any point within the program.

To define a global variable, you simply need to use the static keyword before the variable declaration. For example:

public class Example {
    public static int a;
    public static int b;
}

This declaration creates two global variables, a and b. These variables can now be accessed from anywhere in the program using the syntax:

Example.a;

Example.b;

It's important to note that global variables are shared by all instances of a class, so any changes made to a global variable will be reflected everywhere. This can be both an advantage and a potential source of errors if not used carefully.

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