Thread: Transferring console output to a textArea....how to make this happen?

import java.util.ArrayList;
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
 
 
 
public class ThreeArrayLists extends JFrame {
 
 
 
 
private static final long serialVersionUID = 1L;
 
 
 
 
public ThreeArrayLists(){
	super("ThreeArrayLists");
	setLayout(new FlowLayout());
	setSize(400,400);
	JButton button = new JButton("Press");
	JLabel label1 = new JLabel("Three Array Lists");
 
	getContentPane();
	add(label1);
	add(button);
	JTextArea textArea;
	textArea = new JTextArea(200, 200);
	add(textArea);
 
 
 
	buttonHandler bHandle = new buttonHandler();
	button.addActionListener(bHandle);
 
}
	class buttonHandler implements ActionListener {
		public void actionPerformed(ActionEvent e)
		{
			ArrayList<Double> priceList = new ArrayList<Double>();
			ArrayList<Double> quantityList = new ArrayList<Double>();
			ArrayList<Double> amountList = new ArrayList<Double>();
 
			priceList.add(new Double(10.62));
			priceList.add(new Double(14.89));
			priceList.add(new Double(13.21));
			priceList.add(new Double(16.55));
			priceList.add(new Double(18.62));
			priceList.add(new Double(9.47));
			priceList.add(new Double(6.58));
			priceList.add(new Double(18.32));
			priceList.add(new Double(12.15));
			priceList.add(new Double(3.98));
 
			quantityList.add(new Double(4.0));
			quantityList.add(new Double(8.5));
			quantityList.add(new Double(6.0));
			quantityList.add(new Double(7.35));
			quantityList.add(new Double(9.0));
			quantityList.add(new Double(15.3));
			quantityList.add(new Double(3));
			quantityList.add(new Double(5.4));
			quantityList.add(new Double(2.9));
			quantityList.add(new Double(4.8));
			{
				for (int i = 0; i < 10; i++) {
					amountList.add((Double.valueOf(priceList.get(i).toString())) * (Double.valueOf(quantityList.get(i).toString())));
 
			textArea.setText(String.format("%d) %.2f * %.2f = %.2f \n",i+1, Double.valueOf(priceList.get(i).toString()), Double.valueOf(quantityList.get(i).toString()), Double.valueOf(amountList.get(i).toString()));	
 
			System.out.printf("%d) %.2f * %.2f = %.2f \n",i+1, Double.valueOf(priceList.get(i).toString()), Double.valueOf(quantityList.get(i).toString()), Double.valueOf(amountList.get(i).toString()));
				}
					}
 
			}
 
			}
 
 
 
 
 
public static void main(String[] args){
	ThreeArrayLists newArray = new ThreeArrayLists();
	newArray.setVisible(true);
 
}}

Why would you mix console input/output and graphical input/output in the same program? That's annoying.

The answer to your question is relatively simple. How do you normally get the user's input from the console? What is that object, or what could that input object be to be most convenient? What does a JTextArea contain? What do you write to a JTextArea, and how do you write to it? If you can answer those questions, you can answer your own post.