How do I use public and private access modifiers in Java?

What are public and private access modifiers in Java?

In Java, public means the member is accessible from any other class, while private restricts access to the same class.

Can you give me an example of using public and private?

Sure! Here's a simple example:

class Example {
    public int publicVar;
    private int privateVar;

    public void setPrivateVar(int value) {
        privateVar = value;
    }
}

How do I access the private variable from another class?

You can't access a private variable directly from another class. You can use public methods to interact with it.

What happens if I don't use any access modifier?

If no access modifier is specified, the default access level is package-private, meaning it's accessible only within its own package.