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How to use the final modifier in Java?
The final modifier can be associated with methods, classes and variables. Once declared final −
- A final class cannot be instantiated.
- A final method cannot be overridden.
- A final variable cannot be reassigned.
Example
class TestExample {
final int value = 10;
public static final int BOXWIDTH = 6;
static final String TITLE = "Manager";
public final void changeName() {
System.out.println("This is a final method");
}
}
final class Demo{ }
public class FinalExample extends TestExample {
public static void main(String args[]){
FinalExample obj = new FinalExample();
System.out.println(obj.value);
System.out.println(obj.BOXWIDTH);
System.out.println(obj.TITLE);
obj.changeName();
}
}
Output
10 6 Manager This is a final method
Updated on: 30-Jul-2019
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