Swing - Could not reserve enough space for object heap

Question

I tried some swing today for a GUI in java. When I want to launch the application, this error appears. Here is my source code:

package de.hoffmann;

import java.awt.Color;

import javax.swing.JFrame;
import javax.swing.JPanel;

public class MainApplication extends javax.swing.JFrame {
    private static final long serialVersionUID = 1L;

    public MainApplication() {

        JFrame mainFrame = new JFrame("Buchstaben-Häufigkeit");
        mainFrame.setSize(600,400);

        JPanel panel = new JPanel();
        panel.setBackground(Color.red);

        mainFrame.add(panel);

        pack();
    }

    public static void main(String[] args) {

        new MainApplication().setVisible(true);
    }

}

Where's the problem

i tried your code, it works, i can see the window which error do you have? — Giovanni Far, Dec 11 '13 at 15:43

score 0 · Answer 1 · edited May 23 '17 at 12:11

0

The code works fine. I suggest you to set the dimension of panel object: panel.setSize(600,400); and set the mainFrame to visible: mainFrame.setVisible(true);. If you have a Java heap space problem, which I find strange however, have a look in here

edited May 23 '17 at 12:11

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answered Dec 11 '13 at 16:44

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Swing - Could not reserve enough space for object heap

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