The final keyword in Java is used to indicate that a variable, method, or class cannot be changed.

For example, if you declare a variable as final, it will be a constant and cannot be changed:

final int MAX_VALUE = 100;

If you declare a method as final, it cannot be overridden by subclasses:

public final void myMethod() {
// code here
}

Finally, if you declare a class as final, it cannot be extended by subclasses:

public final class MyClass {
// code here
}

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