How to print arrays to JFrames

[milkywave1]

As the title says, how to you print arrays to JFrames. I tried methods like using JLabel to print the arrays, but it just prints the bottom line
Please help!
Heres my code if its neccesary:

package net.thegoldenkey.martin;

import javax.swing.JFrame;
import javax.swing.JLabel;

public class Core extends JFrame
{
	private static final long serialVersionUID = 1L;
	private static final int WIDTH = 1366;
	private static final int HEIGHT = 768;
	
	private static JFrame j = new JFrame();
	
	public static void main(String[] args)
	{
		frame();
	}
	
	public static void frame()
	{
		System.out.println("Loading JFrame..."); 
		
		//JFrame Windows
		j.pack();
		j.setTitle("The Golden Key");
		j.setSize(WIDTH, HEIGHT);
		j.setVisible(true);
		j.setResizable(false);
		j.setLocationRelativeTo(null);
		j.setDefaultCloseOperation(EXIT_ON_CLOSE);
		
		//Graphics
		for(String row : Maps.Island1)
		{
			JLabel l = new JLabel(row);
			j.add(l);
		}
	}
}

Maps

package net.thegoldenkey.martin;

public class Maps
{
	//Starting area
	public static String[] Island1 = 
		{
			" _________________   _______",
			"/                         \\"
		};
}

[Fubarable]

Myself, I'd use a JTextArea, set its Font to Font.MONOSPACED, and then append the Strings into the JTextArea via a for loop.

[milkywave1]

Ok, I tried this and nothing happened

			for(String row : Maps.Island1)
			{
				JTextArea map = new JTextArea(row);
				j.add(map);
			}

Oh yea, how do you set the fonts to monospaced

[AndrewM16921]

JTextArea a = new JTextArea();
a.setFont(new Font(Font.MONOSPACED, Font.PLAIN, 12));

[DarrylBurke]

Adding each row to a new, different text area that isn't added itself to any visible component hierarchy isn't going to put anything on your screen.

db

[milkywave1]

Adding each row to a new, different text area that isn't added itself to any visible component hierarchy isn't going to put anything on your screen.

db

Then how do you fix it?

[DarrylBurke]

Use one JTextArea, declared and initialized before the loop (possibly as an instance field, if you require access from another method).

Don't forget to append a newline "\n" after each row.

db

[gowthamgutha]

You can add it to a JList.

JList l=new JList();
DefaultListModel d=new DefaultListModel();

for(int i=0;i<a.length;i++)
{
// supposed if the array is an int[]
d.addElement(new Integer(a[i]));
}

l.setModel(d);

[milkywave1]

How do you do that?(Sorry i'm very new to JTextArea)

[milkywave1]

You can add it to a JList.

JList l=new JList();
DefaultListModel d=new DefaultListModel();

for(int i=0;i<a.length;i++)
{
// supposed if the array is an int[]
d.addElement(new Integer(a[i]));
}

l.setModel(d);

I tried that but did not work

[Fubarable]

Stating that something "does not work" without showing what you tried makes it *very* hard to know what you may be doing wrong, makes it very hard to help you.

[milkywave1]

Stating that something "does not work" without showing what you tried makes it *very* hard to know what you may be doing wrong, makes it very hard to help you.

Oh ok :/ Heres what i tried

			JTextArea map = new JTextArea();
			for(String row : Maps.Island1)
			{
				j.add(map);
			}

[Fubarable]

Oh ok :/ Heres what i tried

			JTextArea map = new JTextArea();
			for(String row : Maps.Island1)
			{
				j.add(map);
			}

What is j? Re-adding the same JTextArea to a component multiple times will not likely do anything useful.

Why not try what has already been suggested several times above: Appending Strings to the JTextArea inside of the for loop?

[milkywave1]

Ok, I tried appending strings and now it prints it only in a line

If you looked at the top of the post, 'j' is the variable for JFrame.

Heres what i tried,

			JTextArea map = new JTextArea();
			for(String row : Maps.Island1)
			{
				map.append(row);
			}
			j.add(map);

EDIT:Ok, Ive tried doing this,
JTextArea map = new JTextArea();
for(String row : Maps.Island1)
{
map.append(row);
map.append("\n");
}
j.add(map);
and it worked!

EDIT2: I played with it for a while, and sometimes the application works and sometimes it doesn't? Im confused,

[Fubarable]

Ok, I tried appending strings and now it prints it only in a line

If you looked at the top of the post, 'j' is the variable for JFrame.

Heres what i tried,

			JTextArea map = new JTextArea();
			for(String row : Maps.Island1)
			{
				map.append(row);
			}
			j.add(map);

EDIT:Ok, Ive tried doing this,
JTextArea map = new JTextArea();
for(String row : Maps.Island1)
{
map.append(row);
map.append("\n");
}
j.add(map);
and it worked!

good deal!

EDIT2: I played with it for a while, and sometimes the application works and sometimes it doesn't? Im confused,

We'll need more to be able to help you. Consider creating and posting a minimal example that compiles, runs, contains no code unrelated to the problem or essential to allow it to compile and that reproduces your problem, an SSCCE. Post that and we'll be better able to understand what your problem is and how to help you.

[milkywave1]

We'll need more to be able to help you. Consider creating and posting a minimal example that compiles, runs, contains no code unrelated to the problem or essential to allow it to compile and that reproduces your problem, an SSCCE. Post that and we'll be better able to understand what your problem is and how to help you.

Oh nvm I solved it... How do you make it so that you can't type on the JFrame?

[DarrylBurke]

Oh nvm I solved it... How do you make it so that you can't type on the JFrame?

And you will share your solution, seeing as this is a forum and not an online coaching center?

A JFrame isn't a text component, so you can't type on it at all.

Consider creating and posting a minimal example that compiles, runs, contains no code unrelated to the problem or essential to allow it to compile and that reproduces your problem, an SSCCE. Post that and we'll be better able to understand what your problem is and how to help you.

So where's that SSCCE?

db

[kaydell2]

How do you make it so that you can't type on the JFrame?

For the JTextArea, you call setEditable(false).

So where's that SSCCE?

Here it is. I did it myself.

So where's that SSCCE?

import javax.swing.JFrame;
import javax.swing.JTextArea;

public class TextAreaFrame extends JFrame {
	
	private JTextArea textArea;
	
	public TextAreaFrame() {
		textArea = new JTextArea();
		textArea.setEditable(false);
		this.add(textArea);
		setSize(500,500);
		setVisible(true);
	}

	private void add(String[] array) {
		for(String row : array)
		{
			textArea.append(row);
			textArea.append("\n");
		}
		repaint();
	}
	
	public static void main(String[] args) {
		TextAreaFrame textAreaFrame = new TextAreaFrame();
		String[] array = { "This is a test", "of the emergency broadcast", "system."};
		textAreaFrame.add(array);
	}

}

To the original poster, the above code is what's meant as a SSCCE. It is supposed to have you reduce your code down in size and complexity and show the problem, and be compilable. Many times when you are making an SSCCE, you figure out how to fix your own problem and if you don't, you have a much shorter listing that other people can help you with.