[darlineth]

i have a code but this is GUI form but, i don't apply a formula of MDAS and PEMDAS and Infix-PostFix, Infix-Prefix.. it because i don't know how do these Calculator project. I'm a beginners in Java Program.

this is the code of my Calculator.

Code:

import java.util.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;


public class Calculator extends JFrame {
	
	private JLabel statusLabel;
	private JTextField inputField;
	private JButton calculate, clear, cancel, infix, prefix, postfix;

	

	
	
	
	public Calculator()
	
	{
		
		super("Calculator in Preliminary depends using a MDAS and PEMDAS rules and Infix-postfix,  Infix-prefix rules.");
		
		
		Container container= getContentPane();
		container.setLayout(new FlowLayout());
		
		
		statusLabel = new JLabel();
	
		
		container.add(new JLabel("Expression: "));
		inputField = new JTextField (20);
		container.add(inputField);
		
        container.add(new JLabel("Result: "));
		inputField = new JTextField (10);
		container.add(inputField);
				
		
		// button for  Expression


		calculate = new JButton();	
		JButton calculate = new JButton("Calculate");
		container.add(calculate);
		
		
		
		
		
		clear = new JButton();
		JButton clear = new JButton("Clear");	
		container.add(clear);
		
		cancel = new JButton();
		JButton cancel = new JButton("Cancel");	
		container.add(cancel);	
			
		infix = new JButton();
		JButton infix = new JButton("Infix");	
		container.add(infix);	
			
		prefix = new JButton();
		JButton prefix = new JButton("Prefix");	
		container.add(prefix);	
			
		postfix = new JButton();
		JButton postfix = new JButton("Postfix");	
		container.add(postfix);	
			
      



			
			
			container.add( statusLabel );
			
			setSize( 500, 150 );
			setVisible( true );
			
			}
	
	public static void main (String args[])
	
	{
		
		Calculator application = new Calculator();
		application.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
	}
	
			
	
	}