JAVA : Difference between a Class and an Instance variable in Java?

JAVA : Difference between a Class and an Instance variable in Java?

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JAVA : Difference between a Class and an Instance variable in Java?

In Java, a variable can be either a class variable (sometimes called a static variable) or an instance variable.

A class variable is shared by all instances of a class, while an instance variable is unique to each instance of a class.

Here's an example:

public class MyClass {
public static int classVar = 0;
public int instanceVar = 0;

public MyClass() {
classVar++;
instanceVar++;
}
}

MyClass obj1 = new MyClass();
MyClass obj2 = new MyClass();

In this example, classVar is a class variable that is shared by all instances of MyClass, while instanceVar is an instance variable that is unique to each instance.

The value of classVar is incremented each time a new instance of MyClass is created, while the value of instanceVar is always 1 for each instance.