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Creating a calculator using Java Swing provides a great way to learn GUI programming. Below is a step-by-step guide to building a simple calculator with basic arithmetic operations.
Steps to Create the Calculator
Set Up the JFrame Use JFrame as the main container for the application. Add a JTextField at the top for displaying inputs and results. Use a JPanel with a grid layout to organize buttons.
Add Buttons Include buttons for digits (0–9) and operations (+, -, *, /, =, C). Use JButton for each button and add them to the panel.
Implement Action Listeners Attach an ActionListener to each button to handle user interactions. Perform operations based on the button clicked.
Perform Calculations Store operands and operators in variables. Use a switch-case structure to evaluate expressions when the "=" button is pressed.
Code Example
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Code sample
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