The final keyword

Key word: final

Q: What is the final keyword?

Final decorates classes: Final decorates classes that cannot be inherited, such as String

Final modifier methods: Final modifier methods cannot be overridden

Final Modifier properties: The value of a final modifier property cannot be modified

The final property is assigned:

Final int number=10; Code block assignment: final int number; { number=10; } 3, constructor assignment :final int number; public C(){ number=10; }Copy the code