most important keywords in Java:
public
: A keyword used to indicate that a method or variable can be accessed from anywhere.
private
: A keyword used to indicate that a method or variable can only be accessed within the same class.
protected
: A keyword used to indicate that a method or variable can be accessed within the same package or by a subclass in a different package.
static
: A keyword used to indicate that a method or variable belongs to the class and not to any instance of the class.
final
: A keyword used to indicate that a variable or method cannot be changed or overridden.
abstract
: A keyword used to indicate that a method or class is incomplete and must be implemented by a subclass.
interface
: A keyword used to define a collection of abstract methods and constants that can be implemented by a class.
class
: A keyword used to define a blueprint for creating objects that contain variables and methods.
extends
: A keyword used to create a subclass that inherits the properties and methods of the parent class.
implements
: A keyword used to indicate that a class is implementing an interface and must provide implementation for all of its abstract methods.
this
: A keyword used to refer to the current object.
super
: A keyword used to refer to the parent class of the current object.
try
, catch
, finally
: Keywords used to handle exceptions in Java.
void
: A keyword used to indicate that a method does not return any value.
return
: A keyword used to return a value from a method.