ATYETI Junior Java Developer Interview Questions, Process, and Tips

A package is a way to organize related classes and interfaces in Java.

• Packages help in avoiding naming conflicts and provide a hierarchical structure.

• Packages can be imported to access classes and interfaces from other packages.

• Packages are used to create modular and reusable code.

• Packages are declared using the 'package' keyword at the beginning of a Java file.

• Example: 'package com.example.myapp;'

Local storage is a web browser feature that allows websites to store data locally on a user's device.

• Local storage is a key-value storage mechanism.

• It is a part of the web storage API.

• Data stored in local storage persists even after the browser is closed.

• It is limited to storing data in string format.

• Local storage can be accessed and modified using JavaScript methods like localStorage.setItem() and localStorage.getItem

Wrapper class is a class that wraps or encapsulates the primitive data types in Java.

• Wrapper classes provide a way to use primitive data types as objects.

• They have methods to convert between primitive types and objects.

• Wrapper classes are immutable.

• Examples of wrapper classes include Integer, Double, Boolean, etc.

Java is a versatile programming language known for its platform independence, object-oriented nature, and robustness.

• Platform independence: Java programs can run on any operating system or platform that has a Java Virtual Machine (JVM).

• Object-oriented: Java supports the principles of encapsulation, inheritance, and polymorphism.

• Robustness: Java has built-in memory management, exception handling, and strong type checkin...read more

Overriding is when a subclass provides a different implementation of a method inherited from its superclass. Overloading is when multiple methods with the same name but different parameters are defined in a class.

• Overriding is used to achieve runtime polymorphism.

• Overriding methods must have the same name, return type, and parameters as the method in the superclass.

• Overloading is used to achieve compile-time polymorphi...read more