InstructionsWrite a program that simulates a simple calculator.This calculator is limited to the following functions:AdditionSubtractionMultiplicationDivisionYour program requires a total of 6 methods (INCLUDING THE MAIN)These methods are listed and explained below:o The main method which will perform the following actions:► Declare necessary variables (number1, number2, choice, answer)Welcome the userPrompt for the first number (double)➤ Prompt for the second number (double)Prompt for the arithmetic choice (int)Validate the choice prompt using a do while loop (1-4 are VALID entries)Create ONE control structure to determine which method to call based on usersinput to choice variable➤ Call display Results method passing the answer variable to display the answer.o Four methods of type double which take as arguments the users two doublesand returns the appropriate calculation. Hint these methods will all be verysimilar, apart from the math.public static double calcSum(double d1, double d2)public static double calcSub(double d1, double d2)public static double calcMul(double d1, double d2)public static double calcDiv(double d1, double d2)o One method of type void which will take as an argument the double variablefrom the main methods which pertains to the users answer (a method call itself)> public static void displayResults(double ans) ✰✰DYour program should compile with no errors & make use of methods to earn fullpoints.Hint: The 4 methods calcSum, calcSub, calcMul, calcDiv are essentially the same method with veryminor changes needed!Z02NLabAssignments (run) #5 × Z02NLabAssignments (run) #6 ×run:***Welcome to the simple calculator***Enter the first number: 1Enter the second number: 2Please select one of the following options1 to Add2 to Subtract3 to Multiply4 to DivideEnter your choice: 4The answer is 0.5BUILD SUCCESSFUL (total time: 6 seconds)ValidationLoop!Drun:Output - Z02NLabAssignments (run) # 7 XIDDDrun:Enter the first number: 5Enter the second number: 2***Welcome to the simple calculator***Enter the first number: 1234Enter the second number: 567.89Please select one of the following options1 to Add2 to Subtract3 to Multiply4 to DivideEnter your choice: 3The answer is 700776.26BUILD SUCCESSFUL (total time: 15 seconds)***Welcome to the simple calculator***Please select one of the following options1 to Add2 to Subtract3 to Multiply4 to DivideEnter your choice: 999Please select one of the following options1 to Add2 to Subtract3 to Multiply4 to DivideEnter your choice: -1Please select one of the following options1 to Add2 to Subtract3 to Multiply4 to DivideEnter your choice: 4The answer is 2.5BUILD SUCCESSFUL (total time: 32 seconds)

This program is a simple calculator simulation implemented in Java. It allows the user to perform…

Te a program This calculator is limited to the following functions: ➤ Addition Subtraction Multiplication Division Your program requires a total of 6 methods (INCLUDING THE MAIN These methods are listed and explained below: o The main method which will perform the following actions: ► Declare necessary variables (number1, number2, choice, answer) Welcome the user ► Prompt for the first number (double)

Te a program This calculator is limited to the following functions: ➤ Addition Subtraction Multiplication Division Your program requires a total of 6 methods (INCLUDING THE MAIN These methods are listed and explained below: o The main method which will perform the following actions: ► Declare necessary variables (number1, number2, choice, answer) Welcome the user ► Prompt for the first number (double)

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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True or FalseA value-returning method must contain a return statement.
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