Java Application with JOptionPane
Below is the implementation of the topic mentioned:
Java
// Java Program to demonstrate // Java Application import javax.swing.*; import java.io.*; // Driver Class public class GFG { // main function public static void main(String[] args) { // Infinite Loop while(true){ // Exception Handling try{ String initial, arithmetic; int choice, choose1; // Welcome Screen JOptionPane.showMessageDialog(null, "Welcome to MyApplication"); // Screen with Options Showing initial = JOptionPane.showInputDialog(null, "1. Arithmetic Operation\n2. Even or Odd Number\n3. Shopping Discount\n4. Student Grading\n5. Exit"); // Taking the Input and Storing the // Choice Taken choice = Integer.parseInt(initial); switch (choice) { case 1: // Arithmetic operations section arithmetic = JOptionPane.showInputDialog(null, "1. Addition\n2. Subtraction\n3. Multiplication\n4. Division"); choose1 = Integer.parseInt(arithmetic); switch (choose1) { // Addition Operation case 1: String addA = JOptionPane.showInputDialog(null, "Input first number"); int add1 = Integer.parseInt(addA); String addB = JOptionPane.showInputDialog(null, "Input second number"); int add2 = Integer.parseInt(addB); int addResult = add1 + add2; JOptionPane.showMessageDialog(null, "The answer is " + addResult); break; // Subtraction Opertion case 2: String subA = JOptionPane.showInputDialog(null, "Input first number"); int sub1 = Integer.parseInt(subA); String subB = JOptionPane.showInputDialog(null, "Input second number"); int sub2 = Integer.parseInt(subB); int subResult = sub1 - sub2; JOptionPane.showMessageDialog(null, "The answer is " + subResult); break; // Multiplication Operation case 3: String mulA = JOptionPane.showInputDialog(null, "Input first number"); int mul1 = Integer.parseInt(mulA); String mulB = JOptionPane.showInputDialog(null, "Input second number"); int mul2 = Integer.parseInt(mulB); int mulResult = mul1 * mul2; JOptionPane.showMessageDialog(null, "The answer is " + mulResult); break; // Division Operation case 4: String divA = JOptionPane.showInputDialog(null, "Input first number"); int div1 = Integer.parseInt(divA); String divB = JOptionPane.showInputDialog(null, "Input second number"); int div2 = Integer.parseInt(divB); int divResult = div1 / div2; JOptionPane.showMessageDialog(null, "The answer is " + divResult); break; } break; // Even or Odd Section case 2: String eo = JOptionPane.showInputDialog(null,"Input the number to check"); int check = Integer.parseInt(eo); // Number is Even if(check % 2 == 0){ JOptionPane.showMessageDialog(null,"The number "+check+" is even"); } // Number is Odd else{ JOptionPane.showMessageDialog(null,"The number "+check+" is odd"); } break; // Shopping Section case 3: String shopping = JOptionPane.showInputDialog(null,"Enter your total shopping amount"); int discount = Integer.parseInt(shopping); // Discount Given according to the Discount if((discount >= 500000) && (discount <= 1000000)){ int finalAmount = discount * 5 / 100; int price = discount - finalAmount; JOptionPane.showMessageDialog(null,"You get a 5% discount"); JOptionPane.showMessageDialog(null,"Your total shopping amount is "+price); } else if((discount > 1000000) && (discount <= 1500000)){ int finalAmount = discount * 10 / 100; int price = discount - finalAmount; JOptionPane.showMessageDialog(null,"You get a 10% discount"); JOptionPane.showMessageDialog(null,"Your total shopping amount is "+price); } else if((discount > 1500000) && (discount < 2000000)){ int finalAmount = discount * 15 / 100; int price = discount - finalAmount; JOptionPane.showMessageDialog(null,"You get a 15% discount"); JOptionPane.showMessageDialog(null,"Your total shopping amount is "+price); } else if(discount >= 2000000){ int finalAmount = discount * 25 / 100; int price = discount - finalAmount; JOptionPane.showMessageDialog(null,"You get a 25% discount"); JOptionPane.showMessageDialog(null,"Your total shopping amount is "+price); } else if(discount >= 0){ JOptionPane.showMessageDialog(null,"Your total shopping amount is "+discount); } else{ JOptionPane.showMessageDialog(null,"Value cannot be negative"); } break; // Student Grading case 4: String name = JOptionPane.showInputDialog(null,"Enter student's name"); String age = JOptionPane.showInputDialog(null,"Enter student's age"); int studentAge = Integer.parseInt(age); if(studentAge >= 0){ JOptionPane.showMessageDialog(null,"The student's name is "+name+" and is "+studentAge+" years old"); } else{ JOptionPane.showMessageDialog(null,"Age cannot be negative"); } break; // Exit case 5: JOptionPane.showMessageDialog(null, "Program will exit"); System.exit(0); break; } } // Exception catch(NumberFormatException ex) { JOptionPane.showMessageDialog(null, "Input error occurred", "Error", JOptionPane.ERROR_MESSAGE); } } } } |
Executing the Program:
Outputs:
1. Welcome Screen
2. Taking Input for Operation to be Performed
3. Taking Input Inside for Further Operation
Example: If Selection of Arithmetic Operation then which operation to be performed.
Taking of Input 1 for Addition Operation
Taking of Input 2 for Addition Operation
4. Result of the Operations Performed
Java Application with JOptionPane: Calculator, Numbers, Discounts, and Student Assessment
In this article, we will create a simple application that is created using the Java programming language with the help of the JOptionPane class. This application has various features that can assist users in various situations.