Question

You can call a method using myClass.myMethod() if its a static method. If its not static, you can call using myObject.myMethod() or just myMethod(). is there any other way to call it? and are there different circumstances where you can use an object to call it and call it without an object.

Answer 1

The JVM has 4 bytecodes for calling methods:

1. invokestatic for calling static methods (obviously)
2. invokeinterface for calling methods on interfaces (I don’t know why they need a special bytecode, but they have one)
3. invokespecial for calling constructors and superclass methods
4. invokevirtual for calling all other methods