Wait for resizing JPanel

Question

nice day,
during rezize JFrame simultaneously changing the size of JFrame Childs, how to stop, pause or wait for that and resize JFrame Childs just one time
import java.awt.BorderLayout;
import java.awt.Dimension;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.SwingUtilities;
import javax.swing.border.EmptyBorder;
public class PaintPanels extends JFrame {
    private static final long serialVersionUID = 1L;
    private final JPanel fatherPanel = new JPanel();
    private SomePanel centerPanel;
    private SomePanel northPanel;
    private SomePanel southPanel;
    public void makeUI() {
        centerPanel = new SomePanel();
        northPanel = new SomePanel();
        southPanel = new SomePanel();
        centerPanel.setName("centerPanel");
        northPanel.setName("northPanel");
        southPanel.setName("southPanel");
        northPanel.setPreferredSize(new Dimension(1020, 170));
        centerPanel.setPreferredSize(new Dimension(1020, 300));
        southPanel.setPreferredSize(new Dimension(1020, 170));
        fatherPanel.setLayout(new BorderLayout(5, 5));
        fatherPanel.setBorder(new EmptyBorder(5, 5, 5, 5));
        fatherPanel.add(northPanel, BorderLayout.NORTH);
        fatherPanel.add(centerPanel, BorderLayout.CENTER);
        fatherPanel.add(southPanel, BorderLayout.SOUTH);
        setLayout(new BorderLayout(5, 5));
        setDefaultCloseOperation(EXIT_ON_CLOSE);
        add(fatherPanel, BorderLayout.CENTER);
        pack();
        setVisible(true);
    public static void main(String[] args) {
        SwingUtilities.invokeLater(new Runnable() {
            @Override
            public void run() {
                new PaintPanels().makeUI();
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Component;
import java.awt.Dimension;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import javax.swing.BorderFactory;
import javax.swing.JLabel;
import javax.swing.JPanel;
public class SomePanel extends JPanel {
    private static final long serialVersionUID = 1L;
    private GradientPanel titlePanel;
    protected JLabel titleLabel;
    int borderOffset = 2;
    public SomePanel() {
        setLayout(new BorderLayout(5,5));
        setBorder(BorderFactory.createLineBorder(Color.gray, 1));
        addMouseListener(new MouseListener() {
            @Override
            public void mouseClicked(MouseEvent e) {
                Component comp = e.getComponent();
                String compName = comp.getName();
                System.out.print("Mouse click from " + compName + "\n");
            @Override
            public void mousePressed(MouseEvent e) {
            @Override
            public void mouseReleased(MouseEvent e) {
            @Override
            public void mouseEntered(MouseEvent e) {
            @Override
            public void mouseExited(MouseEvent e) {
        titleLabel = new JLabel("  Welcome World  ", JLabel.LEADING);
        titleLabel.setForeground(Color.darkGray);
        titlePanel = new GradientPanel(Color.black);
        titlePanel.setLayout(new BorderLayout());
        titlePanel.add(titleLabel, BorderLayout.WEST);
        titlePanel.setBorder(BorderFactory.createEmptyBorder(borderOffset, 4, borderOffset, 1));
        titlePanel.setBorder(BorderFactory.createLineBorder(Color.lightGray));
        titlePanel.setMinimumSize(new Dimension(300, 25));
        titlePanel.setPreferredSize(new Dimension(800, 25));
        titlePanel.setMaximumSize(new Dimension(1200, 25));
        add(titlePanel, BorderLayout.NORTH);
import java.awt.Color;
import java.awt.GradientPaint;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Paint;
import javax.swing.JPanel;
class GradientPanel extends JPanel {
    private static final long serialVersionUID = 1L;
    public GradientPanel(Color background) {
        setBackground(background);
    @Override
    public void paintComponent(Graphics g) {
        super.paintComponent(g);
        if (isOpaque()) {// Color controlColor = UIManager.getColor("control");
            //Color background = new Color(44, 61, 146);
            //Color controlColor = new Color(168, 204, 241);
            Color background = new Color(168, 210, 241);
            Color controlColor = new Color(230, 240, 230);
            int width = getWidth();
            int height = getHeight();
            Graphics2D g2 = (Graphics2D) g;
            Paint oldPaint = g2.getPaint();
            g2.setPaint(new GradientPaint(0, 0, background, width, 0, controlColor));
            //g2.setPaint(new GradientPaint(0, 0, getBackground(), width, 0, controlColor));
            g2.fillRect(0, 0, width, height);
            g2.setPaint(oldPaint);
}

Answer 1

nice day,
could you hepl me with some definitions, still I can't to define gap for first and last of JLabel (matrix), is there some hack for GridBagLayout,
hmmm, interesting that if I replace South JPanel and put there JPanet that contains only JButtons, then that's/just only this one (JPanel) doesn't any problems with synchronizations for repaint with JFrame,
result is: resize isn't smooth, Border jump, resize breaking,
already at a fraction of JComponents that I would like to display,
I certainly know that the reason is the LCD display, where its native resolution makes a huge problem with the edge of Border and FontSize, 'glass screen' doesn't suffering from similar diseases,
so there my question is how to stop the refresh, resize JPanels with its parents, therefore wait until the resize event ends on JFrame
import java.awt.*;
import javax.swing.*;
public class ChildPanel extends JPanel {
    private static final long serialVersionUID = 1L;
    public ChildPanel() {
        JLabel hidelLabel;
        JLabel firstLabel;
        JTextField firstText;
        setLayout(new GridBagLayout());
        GridBagConstraints gbc = new GridBagConstraints();
        setComponentOrientation(ComponentOrientation.LEFT_TO_RIGHT);
        for (int k = 0; k < 50; k++) {
            hidelLabel = new JLabel("     ");
            //hidelLabel.setBorder(BorderFactory.createLineBorder(Color.BLACK, 1));
            gbc.fill = GridBagConstraints.HORIZONTAL;
            gbc.weightx = 0.5;
            gbc.weighty = 0.5;
            gbc.gridx = k;
            gbc.gridy = 0;
            add(hidelLabel, gbc);
        for (int k = 0; k < 5; k++) {
            firstLabel = new JLabel("Testing Label : ", SwingConstants.RIGHT);
            firstLabel.setFont(new Font("Serif", Font.BOLD, 20));
            firstLabel.setBorder(BorderFactory.createLineBorder(Color.BLACK, 1));
            gbc.fill = GridBagConstraints.HORIZONTAL;
            //gbc.ipady = 0;       //reset to default
            //gbc.weighty = 1.0;   //request any extra vertical space
            //gbc.anchor = GridBagConstraints.PAGE_END; //bottom of space
            gbc.insets = new Insets(0, 0, 5, 0);  //top padding
            gbc.gridx = 0;       //aligned with JLabel 0
            gbc.gridwidth = 8;   //8 columns wide
            gbc.gridy = k + 1;
            add(firstLabel, gbc);
        for (int k = 0; k < 5; k++) {
            firstText = new JTextField("Testing TextField");
            firstText.setFont(new Font("Serif", Font.BOLD, 20));
            firstText.setBorder(BorderFactory.createLineBorder(Color.BLACK, 1));
            gbc.fill = GridBagConstraints.HORIZONTAL;
            gbc.insets = new Insets(0, 0, 5, 0);
            gbc.gridx = 9;
            gbc.gridwidth = k + 8;
            gbc.gridy = k + 1;
            add(firstText, gbc);
        for (int k = 0; k < 5; k++) {
            firstLabel = new JLabel("Testing Label : ", SwingConstants.RIGHT);
            firstLabel.setFont(new Font("Serif", Font.BOLD, 20));
            firstLabel.setBorder(BorderFactory.createLineBorder(Color.BLACK, 1));
            gbc.fill = GridBagConstraints.HORIZONTAL;
            gbc.insets = new Insets(0, 0, 5, 0);
            gbc.gridx = 20 + k;
            gbc.gridwidth = 8;
            gbc.gridy = k + 1;
            add(firstLabel, gbc);
        for (int k = 0; k < 5; k++) {
            firstText = new JTextField("Testing TextField");
            firstText.setFont(new Font("Serif", Font.BOLD, 20));
            firstText.setBorder(BorderFactory.createLineBorder(Color.BLACK, 1));
            gbc.fill = GridBagConstraints.HORIZONTAL;
            gbc.insets = new Insets(0, 0, 5, 0);
            gbc.gridx = 29 + k;
            gbc.gridwidth = 21 - k;
            gbc.gridy = k + 1;
            add(firstText, gbc);
import java.awt.*;
import javax.swing.JPanel;
class GradientPanel extends JPanel {
    private static final long serialVersionUID = 1L;
    public GradientPanel(Color background) {
        setBackground(background);
    @Override
    public void paintComponent(Graphics g) {
        super.paintComponent(g);
        if (isOpaque()) {
            Color background = new Color(168, 210, 241);
            Color controlColor = new Color(230, 240, 230);
            int width = getWidth();
            int height = getHeight();
            Graphics2D g2 = (Graphics2D) g;
            Paint oldPaint = g2.getPaint();
            g2.setPaint(new GradientPaint(0, 0, background, width, 0, controlColor));
            g2.fillRect(0, 0, width, height);
            g2.setPaint(oldPaint);
}