Object Oriented Programming (JAVA)

Scanner class is used to take input from the user in java. It has many different methods to handle other task too. To use Scanner class you have to use  import java.util.Scanner;   then you have to create an object of Scanner class. After creating an object, you can use the scanner object to store variables from user. When user gives input it stores in it and later on we can assign the value in variable for further use. let't see one example of Scanner class. Here, how to calculate Simple Interest is displayed. Source code... package oop; import java.util.Scanner; public class ScannerDemo { // Scanner is a class, located inside java.util package // Scanner is used to take input from user in console public static void main(String[] args) { int t; double p, r; double si; Scanner in = new Scanner(System.in); System.out.println("Principle amount:"); p = in.nextDouble(); System.out.println("Enter rate:"); r = in.nextDouble(); System.o

 Logical operators are widely used in decision making in JAVA. The Operators are used to check the given condition or expression whether they are true or false. Mostly logical operators are used to check condition if there are two or more expression and whether the expressions(two or more expressions) are returning true or not. There are three logical operator i.e. AND Operator (&&), OR Operator (||) and NOT Operator (!). Lets see below example to explore it in more convenient way.  Let's suppose we are making console application based voting system. The criteria are defined below. 1)Must be citizen of some regulatory body, lets assume Nepal. At first he or she must have proof that he       or  she crossed 16 and has citizenship card. Then only the persoin is known as citizen.  1) Must have crossed age 18. (Age defined he or she is eligible for vote or not). 2) Must have Voting Card. If all the condition is satisfied then he or she is eligible to vote. Let's check this

 https://youtu.be/rSTNMxkBQgQ

This video depicts what is assignment operator and how to work with assignment operator. 

 There are different types of operators in java programming language. one of them is arithmetic operator. Arithmetic operators are used to do arithmetic operations in java. The sign used on arithmetic operation are listed below. 1) Addition +  2) Subtraction - 3) Division / 4) Multiplication * 5) Modulo % ( It gives reminder after division) Example below displays the source code of performing arithmetic operation.  package operators; public class ArithmeticOperators { // basically there are 5 types of arithmetic operator // 1) addition + // 2) Subtraction - // 3) multiplication * // 4) division / // 5) modulo % public static void main(String[] args) { int a = 10; int b = 22; // lets do addition first System.out.println("Total sum = " + (a + b)); // subtraction System.out.println("b - a = " + (b - a)); // multiplication System.out.println("a * b = " + (a * b)); // division System.out.println("a / a = " +

   Install JDK in your computer Learning java as a programming language is better for beginners. Java is very popular programming language in the world. It is simple to learn and it has many advantages. Java is object oriented programming language. Java code is, "write once and read many times" format. When any software is developed in java, it runs in any environment. It has features like platform independent, secure, multithreading, memory allocation and many more. In this blog, how to install Java Development Kit (JDK) in your windows machine is shown. Steps      1) go to your browser and type "download JDK" and hit enter.     2) Click on Download JDK and click on download according to your operating system.      3) Install JDK      4) Go to installation folder of JDK          > C drive, OS installed drive > program files > java > jdk-15.0.1 > bin          > copy the path      5) Right click on "This pc or My computer"     6) select pr