How to use the extends keyword in Java Java supports class extension via the extends keyword. When present, extends specifies a parent-child relationship between two classes.

Final means the variable can't change. That's why global constants in Java use the static and final keywords. Example of static and final in Java Here's a static final example to further demonstrate ...

A Java var keyword example As you can see from that simple code snippet, traditionally developed Java code lends itself to verbosity. But with the use of the var reserved work and the type inference, ...