Examples of javax.swing.border.Border

javax.swing.border.Border
oracle.com/javase/tutorial/uiswing/components/border.htmll">How to Use Borders, a section in The Java Tutorial.
In the Swing component set, borders supercede Insets as the mechanism for creating a (decorated or plain) area around the edge of a component.
Usage Notes:
- Use EmptyBorder to create a plain border (this mechanism replaces its predecessor, setInsets).
- Use CompoundBorder to nest multiple border objects, creating a single, combined border.
- Border instances are designed to be shared. Rather than creating a new border object using one of border classes, use the BorderFactory methods, which produces a shared instance of the common border types.
- Additional border styles include BevelBorder, SoftBevelBorder, EtchedBorder, LineBorder, TitledBorder, and MatteBorder.
- To create a new border class, subclass AbstractBorder.
@author David Kloba @author Amy Fowler @see javax.swing.BorderFactory @see EmptyBorder @see CompoundBorder

     */
    @Override
    public void paintComponent(Graphics g) {
        super.paintComponent(g);
        // Paint the border.
        Border border = getBorder();


        Dimension size = getSize();


        if (isOpaque()) {
            g.setColor(getBackground());
            g.fillRect(0, 0, size.width, size.height);
        }


        if (border != null) {
            border.paintBorder(this, g, 0, 0, size.width, size.height);
        }


        if (_jideSplitPane.isShowGripper()) {
            Rectangle rect = new Rectangle(size);
            if (_gripperPainter != null) {

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            else {
                return null;    // Will cause L&F to use classic border
            }
        }
        Skin skin = new Skin(c, part, null);
        Border border = borderMap.get(skin.string);
        if (border == null) {
            String bgType = getTypeEnumName(c, part, null, Prop.BGTYPE);
            if ("borderfill".equalsIgnoreCase(bgType)) {
                int thickness = getInt(c, part, null, Prop.BORDERSIZE, 1);
                Color color = getColor(skin, Prop.BORDERCOLOR, Color.black);

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     * @param width  the width of the painted border
     * @param height the height of the painted border
     */
    @Override
    public void paintBorder(Component c, Graphics g, int x, int y, int width, int height) {
        Border border = getBorderUI();
        String title = getTitle();
        if ((title != null) && !title.isEmpty()) {
            int edge = (border instanceof JideTitledBorder) ? 0 : EDGE_SPACING;
            JLabel label = getLabel(c);
            Dimension size = label.getPreferredSize();
            Insets insets = (border != null)
                    ? border.getBorderInsets(c)
                    : new Insets(0, 0, 0, 0);


            int borderX = x + edge;
            int borderY = y + edge;
            int borderW = width - edge - edge;
            int borderH = height - edge - edge;


            int labelY = y;
            int labelH = size.height;
            int position = getPosition();
            switch (position) {
                case ABOVE_TOP:
                    insets.left = 0;
                    insets.right = 0;
                    borderY += labelH - edge;
                    borderH -= labelH - edge;
                    break;
                case TOP:
                    insets.top = edge + insets.top / 2 - labelH / 2;
                    if (insets.top < edge) {
                        borderY -= insets.top;
                        borderH += insets.top;
                    } else {
                        labelY += insets.top;
                    }
                    break;
                case BELOW_TOP:
                    labelY += insets.top + edge;
                    break;
                case ABOVE_BOTTOM:
                    labelY += height - labelH - insets.bottom - edge;
                    break;
                case BOTTOM:
                    labelY += height - labelH;
                    insets.bottom = edge + (insets.bottom - labelH) / 2;
                    if (insets.bottom < edge) {
                        borderH += insets.bottom;
                    } else {
                        labelY -= insets.bottom;
                    }
                    break;
                case BELOW_BOTTOM:
                    insets.left = 0;
                    insets.right = 0;
                    labelY += height - labelH;
                    borderH -= labelH - edge;
                    break;
            }
            insets.left += edge + TEXT_INSET_H;
            insets.right += edge + TEXT_INSET_H;


            int labelX = x;
            int labelW = width - insets.left - insets.right;
            if (labelW > size.width) {
                labelW = size.width;
            }
            switch (getJustification(c)) {
                case LEFT:
                    labelX += insets.left;
                    break;
                case RIGHT:
                    labelX += width - insets.right - labelW;
                    break;
                case CENTER:
                    labelX += (width - labelW) / 2;
                    break;
            }


            if (border != null) {
                if ((position != TOP) && (position != BOTTOM)) {
                    border.paintBorder(c, g, borderX, borderY, borderW, borderH);
                } else {
                    Graphics g2 = g.create();
                    if (g2 instanceof Graphics2D) {
                        Graphics2D g2d = (Graphics2D) g2;
                        Path2D path = new Path2D.Float();
                        path.append(new Rectangle(borderX, borderY, borderW, labelY - borderY), false);
                        path.append(new Rectangle(borderX, labelY, labelX - borderX - TEXT_SPACING, labelH), false);
                        path.append(new Rectangle(labelX + labelW + TEXT_SPACING, labelY, borderX - labelX + borderW - labelW - TEXT_SPACING, labelH), false);
                        path.append(new Rectangle(borderX, labelY + labelH, borderW, borderY - labelY + borderH - labelH), false);
                        g2d.clip(path);
                    }
                    border.paintBorder(c, g2, borderX, borderY, borderW, borderH);
                    g2.dispose();
                }
            }
            g.translate(labelX, labelY);
            label.setSize(labelW, labelH);
            label.paint(g);
            g.translate(-labelX, -labelY);
        } else if (border != null) {
            border.paintBorder(c, g, x, y, width, height);
        }
    }

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     * @param c      the component for which this border insets value applies
     * @param insets the object to be reinitialized
     */
    @Override
    public Insets getBorderInsets(Component c, Insets insets) {
        Border border = getBorderUI();
        if (border == null) {
            insets.set(0, 0, 0, 0);
        } else if (border instanceof AbstractBorder) {
            AbstractBorder ab = (AbstractBorder) border;
            insets = ab.getBorderInsets(c, insets);
        } else {
            Insets i = border.getBorderInsets(c);
            insets.set(i.top, i.left, i.bottom, i.right);
        }
        String title = getTitle();
        if ((title != null) && !title.isEmpty()) {
            int edge = (border instanceof JideTitledBorder) ? 0 : EDGE_SPACING;

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            throw new IllegalArgumentException("Width must be >= 0");
        }
        if (height < 0) {
            throw new IllegalArgumentException("Height must be >= 0");
        }
        Border border = getBorderUI();
        String title = getTitle();
        if ((title != null) && !title.isEmpty()) {
            int edge = (border instanceof JideTitledBorder) ? 0 : EDGE_SPACING;
            JLabel label = getLabel(c);
            Dimension size = label.getPreferredSize();
            Insets insets = (border != null)
                    ? border.getBorderInsets(c)
                    : new Insets(0, 0, 0, 0);


            int baseline = label.getBaseline(size.width, size.height);
            switch (getPosition()) {
                case ABOVE_TOP:

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        }
        return Component.BaselineResizeBehavior.OTHER;
    }


    private Border getBorderUI() {
        Border border = getBorder();
        return border != null
                ? border
                : UIManager.getBorder("TitledBorder.border");
    }

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        toolbar.add(Box.createHorizontalStrut(8));
        toolbar.add(modeBox);
        toolbar.add(Box.createHorizontalStrut(8));


        // Add space above and below, to tune the layout:
        Border border = BorderFactory.createEmptyBorder(3, 0, 3, 0);
        toolbar.setBorder(border);
    }

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        toolbar.add(new Separator());
        toolbar.add(Box.createHorizontalStrut(8));
        toolbar.add(Box.createHorizontalGlue());


        // Add space above and below, to tune the Mac layout:
        Border border = BorderFactory.createEmptyBorder(3, 0, 3, 0);
        toolbar.setBorder(border);
    }

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        label.setForeground(TextColor);
        label.setBackground(BackgroundColor);
        label.setOpaque(true);
        label.setHorizontalAlignment(SwingConstants.CENTER);


        Border emptyBorder = BorderFactory.createEmptyBorder(20, 80, 20, 80);
        Border lineBorder = BorderFactory.createLineBorder(BorderColor);
        Border border =
            BorderFactory.createCompoundBorder(lineBorder, emptyBorder);
        label.setBorder(border);


        Box box = Box.createHorizontalBox();
        box.add(Box.createHorizontalGlue());

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    private int count;


    GenericSliderContainer() {
        super(new GridBagLayout());
        Border border = BorderFactory.createEmptyBorder(0, 3, 0, 3);
        setBorder(border);
    }

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