The Crazy Programmer

Introduction to Object Oriented Programming Concepts in Java

Object Oriented Programming is used to represent the real world data. The main focus is on data. Simula is considered to be the first object oriented programming language. Object Oriented Programming Concepts There are 6 object oriented programming concepts in Java which are given below. Class Object Encapsulation Polymorphism Inheritance Abstraction Class Class is a …

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Type Casting in Java

Java Basics

Converting one data type to another data type is known as type casting. Type Casting in Java is of two types i.e. Implicit Type Casting which is also known as Automatic Type Casting and Explicit Type Casting. Implicit or Automatic Type Casting In this, smaller data type is converted to bigger data type which is also …

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Data Types and Naming Conventions in Java

Java Basics

Data Types in Java Used to represent the type of memory allocation. Used with variables and methods. These are fixed. Primitive Data Types Primitive data types are defined already by the programming language. In Java there are 8 primitive data types. Non-Primitive Data Types Non-Primitive data types are defined by the user. They are Class, …

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Prim’s Algorithm in C [Program & Algorithm]

Algorithm, DSA

Here you will learn about prim’s algorithm in C with a program example. Prim’s Algorithm is an approach to determine minimum cost spanning tree. In this case, we start with single edge of graph and we add edges to it and finally we get minimum cost tree. In this case, as well, we have n-1 …

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Java Variable Types and Rules for Declaring Variables

Java Basics

Variable is nothing it is just the name of memory location. While declaring variables we must follow rules given below. Rules for Declaring Variables in Java 1. Variable name must bound with data type. It means while declaring a variable we must specify its data type. Ex: int x=10; 2. Reserve word or keywords cannot …

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JVM: Java Virtual Machine Architecture and Structure

Java Basics

JVM is responsible for taking .class file and converting that .class file in machine code instructions that can be executed by microprocessor. It’s not a machine, it’s a program. JVM verifies the code before execution (Sandbox Security). JVM is platform dependent and it is heart of Java language. There are four phases of JVM Load …

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What is .class File and Bytecode in Java?

Java Basics

This tutorial will help you to learn about what is .class file and bytecode in java language. You may like to read previous tutorial about How to Write, Compile and Run Your First Java Program? What is .class File and Bytecode When Java source file is compiled by Java compiler it is converted into Java …

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How to Write, Compile and Run Your First Java Program?

Java Basics

Before running Java programs you need to install and setup java. For installation guide read: Java Installation: Downloading, Installing and Setting Path How to write and run Java programs? Open notepad and write below program. class demo { public static void main(String…S) { System.out.println(“Java Programming”); } } Now save the file …

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