macOS Can anyone help with this ActionListener in my java program?

[maxtoncollins1]

I'm trying to create a program to convert inches to centimeters. I made one that displayed the info in the console. (You'd type in a number of inches and it'd display how many centimeters that'd be) Now i'm trying to make one using java swing and i have a window that pops up but I am completely stuck on getting the action listener. Can anyone offer any advice or correct my code?
Here's the code:

import javax.swing.*;

import java.awt.Color;
import java.awt.FlowLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

public class Cw extends JFrame implements ActionListener {

	private JButton convert;
	JTextArea text = new JTextArea(1,20);
	private int conversion = 0;
	
	
	
	public Cw() {
		setLayout(new FlowLayout());
		setVisible(true);
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		setSize(400,200);
		convert = new JButton("Convert");
		add(convert);
		add(text);
		convert.addActionListener(this);

		
	}



public void actionPerformed(ActionEvent e) {
	Object source = e.getSource();
	
		}

		
	}

 

[chown33]

What tutorial or book are you using? Or are you taking a class?


Step 1 is to make the action do something simple, like show the text that's in the text field. That's a simple yet observable action. If you don't know how to do it, then you need to study how user input in Swing works. Not the button-click user input, just plain old text entered in a text field.

Step 2 is to make the action validate the contents of the text field. I.e. is it numeric? Presumably you had to do that in the terminal oriented program.

Step 3 is to convert the text to a number and perform the calculation. Again, you did that in the terminal program, right?

Step 4 is to figure out how and where to display the result of the calculation. Study Swing again, and look for a component that can display text, or numbers converted to text.