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Thread: Calculator GUI Help

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    Default Calculator GUI Help

    I am diving into my first major GUI project and am stumped from the start. I have made a diagram and would like someone to point me into the correct direction so that I may start my task with a good foundation. I am making a calculator that I would like to use as a stand alone application. Here is my diagram:
    Drawing1.jpg
    Any advice to help me get started?


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    Default Re: Calculator GUI Help

    Which part of this is giving you trouble? What have you tried? Where are you stuck?
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    Default Re: Calculator GUI Help

    I'm not too sure where to begin. I know the base for an application is the JFrame (or at least so I believe). Then after that I would add JPanels to group the different components together? I am just having difficulties with the layouts and how I would add or nest the different pieces into the the JFrame. I'm just beginning to learn the GUI basics so any information is greatly helpful. Thanks again

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    Default Re: Calculator GUI Help

    I'd start here: Lesson: Laying Out Components Within a Container (The Java™ Tutorials > Creating a GUI With JFC/Swing)

    But you have the basic idea down- you have a JFrame, which is the main window. That JFrame has a content pane, which is itself a JPanel. That JPanel can contain other JPanels, which can all have different layouts (and include even more JPanels).
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    Default Re: Calculator GUI Help

    That is exactly the advice I was looking for. Much appreciated! I'm sure I will have more questions pertaining to this project as I progress through.

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    Default Re: Calculator GUI Help

    I finally decided on using a GridLayout layour manager. However, with no experience on the subject at all, I decided to tailor an existing source code to try and meet my needs. That didn't go so well unfortunately. Now I am stuck with useless code that I am hoping someone can help me fix. At the moment I am just trying to get the different components to display; later, I will make the methods that accompany them.
    import javax.swing.*;
    import java.awt.*;
    import java.awt.event.*;
     
    public class TEMPERATURE extends JFrame {
    	static final String units[] = {"Celcius", "Farenheit", "Kelvin"};
    	JComboBox convertFrom, convertTo;
    	JTextField initialValue, calculatedValue;
    	JButton convertButton;
    	GridLayout calculator = new GridLayout(2,2);
     
    		public TEMPERATURE (String name) {
    			super(name);
    			setResizable(false);
    		}
    	public void initUnits() {
    		convertFrom = new JComboBox(units);
    		convertTo = new JComboBox(units);	
    	}
    	public void addComponentsToPane(final Container pane) {
    		initUnits();
    		final JPanel aCalculator = new JPanel();
    		aCalculator.setLayout(calculator);
    		JPanel converter = new JPanel();
    		converter.setLayout(new GridLayout(1,1));
     
    		aCalculator.add(initialValue);
    		aCalculator.add(convertFrom);
    		aCalculator.add(calculatedValue);
    		aCalculator.add(convertTo);
     
    		converter.add(convertButton);
    		//converter.addActionListener needed here
    		//**missing section**
     
    		pane.add(aCalculator, BorderLayout.NORTH);
    		pane.add(new JSeparator(), BorderLayout.CENTER);
    		pane.add(converter, BorderLayout.SOUTH);
     
    	}
     
    	private static void makeCalculator () {
    		TEMPERATURE frame = new TEMPERATURE("Temperature Calculator");
    		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    		frame.addComponentsToPane(frame.getContentPane());
    		frame.pack();
    		frame.setVisible(true);
    	}
     
    	public static void main(String[] args) {
    				makeCalculator();
    	}		
    }

    I know this is extremely far off from the end result, but any directioning would boost my morale at this points lol

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    Default Re: Calculator GUI Help

    What does this code do? Does it give you any errors? When do you initialize each of the components you're using?
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