java 16 interview questions and answers

public: Any thing declared as public can be accessed from anywhere. private: Any thing declared as private can’t be seen outside of its class. protected: Any thing declared as protected can be accessed by classes in the same package and subclasses in the other packages. default modifier : Can be accessed only to classes in … Read more

While defining method, variables passed in the method are called parameters. While using those methods, values passed to those variables are called arguments. In Java, the terms “argument” and “parameter” are often used interchangeably, but they have distinct meanings: Parameter: A parameter is a variable that is listed in the method declaration. It is a … Read more

An argument can be passed in two ways. They are passing by value and passing by reference. Passing by value: This method copies the value of an argument into the formal parameter of the subroutine. Passing by reference: In this method, a reference to an argument (not the value of the argument) is passed to … Read more

Bin contains all tools such as javac, appletviewer, awt tool, etc., whereas lib contains API and all packages. What is casting?– Casting is used to convert the value of one type to another. In the context of the Java Development Kit (JDK), the “bin” and “lib” directories serve different purposes: bin (binary): This directory contains … Read more

Methods are functions that operate on instances of classes in which they are defined. Objects can communicate with each other using methods and can call methods in other classes. Method definition has four parts. They are name of the method, type of object or primitive type the method returns, a list of parameters and the … Read more