Java Coding Examples

Example to see how to get user input and do with mathematical expressions- Example0004 In this example we are going to see how to get input from user, Mathematical expressions, For input we create an object from Class Scanner and with System.in Then we use method 'next' to get the input.  We will also see how the normal expression calculations are also done in Java // Input from keyboard, Mathematical expression package com.swprogramdeveloper; import java.util.Scanner; public class Main {     public static void main(String[] args) { // write your code here     // Constants         final float PI=3.14F;         float radius = 4.0F;         System.out.print("Please, enter radius of the circle : ");        //Scanner Class to get user input         Scanner radiusInput = new Scanner(System.in);        //NextFloat will read ...