Java Interview Questions for Freshers

Java Interview Questions for Freshers

Java Interview Questions for Freshers, Java Environments Setup, Java Basic Syntax, Java Language Fundamentals, and Java Object-Oriented Programming. Java Interview Questions and Answers Section I: General Section II: Comments in Java Section III: Java Modifiers Section IV: Java Data Types Section V: Java Variables Section VI: Operators in Java Section VII: Java Control Flow Statements … Read more

Java Object Oriented Programming

Java Object Oriented Programming

Java Object Oriented Programming, Class, Object, Method, Java Inheritance, Polymorphism in Java, Java Abstraction, and Java Encapsulation. Procedural programming is about writing procedures or methods that perform operations on the data, while object-oriented programming is about creating objects that contain both data and methods. Simula is considered the first object-oriented programming, Smalltalk is considered the … Read more

File Handling in Java

File Handling in Java

File Handling in Java, Java Input and Output operations, handling text files, create a file, read a file, write a file, and compare two files. File Handling in Java permits us to create, read, update, and delete the files, which are stored on the local file system. File (Text File) Handling in Java User Point … Read more

Reading User Input

Reading User Input

Reading User Input, Java User Input, Java Output, Java Scanner Class, Java System Class, Java File Handling, and Java Database Connectivity. Reading User Input in Java 1. Reading User Input The Scanner class is used to get user input and it is available in java.util package To use the Scanner class, create an object of the … Read more

Arrays in Java

Arrays in Java

Arrays in Java, What is Array in Java, Declare Arrays, Java Array built-in methods, advantages of Java Arrays, and Drawbacks of Java Arrays. Java Arrays • In Java, Array is an Object that holds a fixed number of values of a single data type • The length of the Array is established when the Array is … Read more

Java ArrayList

Java ArrayList

Java ArrayList, create ArrayList, add elements to ArrayList, return ArrayList size, remove elements of ArrayList, and clear all elements of the ArrayList. Java Array is Static Data Structure and ArrayList is Dynamic Data Structure Array versus ArrayList in Java Array is Static (its size is fixed), ArrayList is Dynamic…. Java Array Example: int [] a= … Read more

Java Strings

Java Strings

Java Strings, What is String?, Declare Strings in Java, String handling in Java, String Methods, String Concatenation, and String Comparison. Strings in Java are objects, and they are immutable. Whenever a change to a String is made, an entirely new String is created. String Handling in Java What is String? The string is a sequence of characters … Read more

Java Branching Statements

Java Branching Statements

Java Branching Statements, Java Programming Fundamentals, Java Control Flow, Java break, Java continue, and Java return statements. We have three types of conditional statements in computer programming: I. Decision-making/Conditional statements (if, switch) II. Loop Statements (for, while, do while, and enhanced for) III. Branching statements (break, continue, and return) Branching Statements in Java Branching statements … Read more

Java Loop Statements

Java Loop Statements

Java Loop Statements, Java Control Flow, Java for loop, while loop, do while loop, enhanced for loop, and Java nested loop statements. Looping in programming languages is a feature that facilitates the execution of a set of instructions/functions repeatedly while some condition evaluates to true. Loop Statements in Java We have four loop structures in … Read more

Java Tutorial for Beginners

Java Tutorial

Java Tutorial for Beginners, Java Environment Setup, Java Language Fundamentals, Java Programming Examples, and Java Object-Oriented Programming concepts. Java Programming Language was developed by James Gosling in 1995 for Sun Microsystems, later It was acquired by Oracle in 2010. Java Step by Step Tutorial Java Environment Setup Java Syntax Java Program Structure Comments in Java. … Read more