Update JPanel and attributes in a gui, with a user-specified timer?

Question

So I have this class. We'll call it ProcessBox. I have another class called Process that has a ProcessBox as a member variable. Then, in my main method I have an ArrayList of Process objects (each having their own ProcessBox). How would I go about making it so that my ProcessBox would update every x ms (where x is user specified. I already have the listener for inputting x done). Below is my ProcessBox class. This is what I wish to redraw every x ms (except a whole list of them).

import java.awt.*;

import javax.swing.*;
import javax.swing.border.LineBorder;

import java.util.*;

public class ProcessBox extends JPanel {
    GridBagLayout gbc_panel;

    public ProcessBox(Process p) {
        super(new GridBagLayout());
        gbc_panel = new GridBagLayout();
        gbc_panel.columnWidths = new int[] { 0, 0, 0 };
        gbc_panel.rowHeights = new int[] { 0, 0, 0, 0, 0, 0 };
        gbc_panel.columnWeights = new double[] { 0, 0, Double.MIN_VALUE };
        gbc_panel.rowWeights = new double[] { 0.0, 0.0, 0.0, 0.0, 0.0,
                Double.MIN_VALUE };
        super.setLayout(gbc_panel);


        setPreferredSize(new Dimension(110, 110));
        setMinimumSize(new Dimension(110, 110));
        setAlignmentX(Component.LEFT_ALIGNMENT);
        setBorder(new LineBorder(new Color(0, 0, 0), 1));
        setSize(new Dimension(110, 110));

        String name = p.getName();
        int priority = p.getPriority();
        int minPriority = p.getMinPriority();
        ArrayList<Integer> times = p.getTime();
        Random r = new Random(System.currentTimeMillis());
        setBackground(new Color(r.nextInt(255 - 210) + 210,
                r.nextInt(255 - 210) + 210, r.nextInt(255 - 210) + 210));

        JLabel lblNewLabel = new JLabel("ID:");
        GridBagConstraints gbc_lblNewLabel = new GridBagConstraints();
        gbc_lblNewLabel.gridheight = 2;
        gbc_lblNewLabel.insets = new Insets(0, 0, 5, 5);
        gbc_lblNewLabel.gridx = 0;
        gbc_lblNewLabel.gridy = 0;
        add(lblNewLabel, gbc_lblNewLabel);

        JLabel lblNewLabel_1 = new JLabel(name);
        GridBagConstraints gbc_lblNewLabel_1 = new GridBagConstraints();
        gbc_lblNewLabel_1.gridheight = 2;
        gbc_lblNewLabel_1.insets = new Insets(0, 0, 5, 0);
        gbc_lblNewLabel_1.gridx = 1;
        gbc_lblNewLabel_1.gridy = 0;
        add(lblNewLabel_1, gbc_lblNewLabel_1);

        JLabel lblNewLabel_2 = new JLabel("Priority:");
        GridBagConstraints gbc_lblNewLabel_2 = new GridBagConstraints();
        gbc_lblNewLabel_2.insets = new Insets(0, 0, 5, 5);
        gbc_lblNewLabel_2.gridx = 0;
        gbc_lblNewLabel_2.gridy = 2;
        add(lblNewLabel_2, gbc_lblNewLabel_2);

        JLabel lblNum = new JLabel(Integer.toString(priority));
        GridBagConstraints gbc_lblNum = new GridBagConstraints();
        gbc_lblNum.insets = new Insets(0, 0, 5, 0);
        gbc_lblNum.gridx = 1;
        gbc_lblNum.gridy = 2;
        add(lblNum, gbc_lblNum);

        JLabel lblNewLabel_3 = new JLabel("Min:");
        GridBagConstraints gbc_lblNewLabel_3 = new GridBagConstraints();
        gbc_lblNewLabel_3.insets = new Insets(0, 0, 5, 5);
        gbc_lblNewLabel_3.gridx = 0;
        gbc_lblNewLabel_3.gridy = 3;
        add(lblNewLabel_3, gbc_lblNewLabel_3);

        JLabel lblMp = new JLabel(Integer.toString(minPriority));
        GridBagConstraints gbc_lblMp = new GridBagConstraints();
        gbc_lblMp.insets = new Insets(0, 0, 5, 0);
        gbc_lblMp.gridx = 1;
        gbc_lblMp.gridy = 3;
        add(lblMp, gbc_lblMp);

        JLabel lblTimeSlice = new JLabel("Slice:");
        GridBagConstraints gbc_lblTimeSlice = new GridBagConstraints();
        gbc_lblTimeSlice.insets = new Insets(0, 0, 0, 5);
        gbc_lblTimeSlice.gridx = 0;
        gbc_lblTimeSlice.gridy = 4;
        add(lblTimeSlice, gbc_lblTimeSlice);

        JLabel lblLeft = new JLabel(Integer.toString(times.get(0)));
        GridBagConstraints gbc_lblLeft = new GridBagConstraints();
        gbc_lblLeft.gridx = 1;
        gbc_lblLeft.gridy = 4;
        add(lblLeft, gbc_lblLeft);
        setVisible(true);

}

}

http://docs.oracle.com/javase/7/docs/api/javax/swing/Timer.html — camickr, Nov 23 '11 at 04:14
Did you read the API? Did you follow the link to the Swing tutorial on "How to Use Timers"? Did you download and try the example? What part of the example didn't you understand? — camickr, Nov 23 '11 at 05:00

score 7 · Accepted Answer · edited May 23 '17 at 11:55

7

Start with How to Use Swing Timers and look at examples, e.g. MarqueeTest or AnimationTest.

edited May 23 '17 at 11:55

Community

1
1

answered Nov 23 '11 at 04:32

trashgod

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I'll try this out and report back later. Thanks. – snotyak Nov 23 '11 at 04:53
Excellent. Don't hesitate to refine your question with an [sscce](http://sscce.org/) based on your findings. – trashgod Nov 23 '11 at 05:03
I'm not really certain how I'll apply this to my code but I know it is the right way. – snotyak Nov 28 '11 at 23:50

Update JPanel and attributes in a gui, with a user-specified timer?

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