Final – with Inheritance
Final has three uses
1. To use as a constant variable
public class UseOfFinal {
public static void main(String[] args) {
final int i = 5;
i=10; // error, because i is final
}
}
2. To prevent Method inheritance
class base1 {
final void function() {
System.out.println("inside base class");
}
}
public class UseOfFinal1 extends base1 {
// function() will not be inherited here
public static void main(String[] args) {
}
}
3. To prevent whole class inheriting
final class Base2 {
void method() {
System.out.println("inside method");
}
}
public class UseOfFinal2 extends Base2 { // this is error, because by using
// final with Base2 prevent whole
// class inheritance
public static void main(String[] args) {
}
}
