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    <p>I was actually working in a JFrame extended class with transluscent Gradients in JFrame</p> <pre><code>import java.awt.Color; import java.awt.Component; import java.awt.Dimension; import java.awt.Graphics; import java.awt.GraphicsConfiguration; import java.awt.Rectangle; import javax.swing.JFrame; import javax.swing.JLayeredPane; import javax.swing.JPanel; import javax.swing.JRootPane; public class JFrameGradient extends JFrame { private static final long serialVersionUID = 7565267933439533086L; private Color initialColor; private Color finalColor; public static final int VERTICAL = 0; public static final int HORIZONTAL = 1; private int orientation = VERTICAL; private int MAX_WIDTH = 1; private int MAX_HEIGHT = 1; private int xInitial = 0; private int xFinal = 0; private int yInitial = 0; private int yFinal = 0; private int initialRedComponent; private int initialGreenComponent; private int initialBlueComponent; private int finalRedComponent; private int finalGreenComponent; private int finalBlueComponent; private int delta = 1; private String title; private GraphicsConfiguration gc; private JFrame frame; private Graphics g; private double transparency; private JPanel gradientPane = new JPanel(true); private boolean isColorChanged = false; public JFrameGradient( Color initialColor, Color finalColor , double transparency ) { super(); this.frame = this; setTransparency(transparency); initClass(); initColor(initialColor, finalColor); } public JFrameGradient( String title , Color initialColor, Color finalColor , double transparency) { super(title); this.title = title; setTransparency(transparency); initClass(); initColor(initialColor, finalColor); } public JFrameGradient( GraphicsConfiguration gc , Color initialColor, Color finalColor , double transparency) { super(gc); this.setGc(gc); setTransparency(transparency); initClass(); initColor(initialColor, finalColor); } public JFrameGradient( GraphicsConfiguration gc , String title , Color initialColor, Color finalColor , double transparency) { super( title , gc ); this.title = title; this.setGc(gc); setTransparency(transparency); initClass(); initColor(initialColor, finalColor); } public JFrameGradient( double transparency) { this( Color.black , Color.white , transparency); } public JFrameGradient(String title , double transparency) { this( title , Color.black , Color.white , transparency); } public JFrameGradient( GraphicsConfiguration gc , double transparency) { this( gc , Color.black , Color.white , transparency); } public JFrameGradient( GraphicsConfiguration gc , String title , double transparency) { this( gc , title , Color.black , Color.white , transparency); } public JFrameGradient() { this( Color.black , Color.white , 1); } public JFrameGradient(String title) { this( title , Color.black , Color.white , 1); } public JFrameGradient( GraphicsConfiguration gc) { this( gc , Color.black , Color.white , 1); } public JFrameGradient( GraphicsConfiguration gc , String title) { this( gc , title , Color.black , Color.white , 1); } public Color getInitialColor() { return initialColor; } public Color getFinalColor() { return finalColor; } public void setInitialColor(Color initialColor) { this.initialColor = initialColor; isColorChanged = true; if(isVisible()) { repaint(); } } public void setFinalColor(Color finalColor) { this.finalColor = finalColor; isColorChanged = true; if(isVisible()) { repaint(); } } public String getTitle() { return title; } public double getTransparency() { return transparency; } public void setTransparency(double transparency) { if( ( transparency &gt;= 0.0) &amp;&amp; (transparency &lt;= 1.0) ) { this.transparency = transparency; } else { this.transparency = 1.0; } } /** * @return the gc */ public GraphicsConfiguration getGc() { return gc; } /** * @param gc the gc to set */ private void setGc(GraphicsConfiguration gc) { this.gc = gc; } public int getOrientation() { return orientation; } public void setOrientation(int orientation) { this.orientation = orientation; if( isVisible()) { repaint(); } } private void initColor(Color initialColor, Color finalColor) { this.initialColor = initialColor; this.finalColor = finalColor; this.initialRedComponent = initialColor.getRed(); this.initialGreenComponent = initialColor.getGreen(); this.initialBlueComponent = initialColor.getBlue(); this.finalRedComponent = finalColor.getRed(); this.finalGreenComponent = finalColor.getGreen(); this.finalBlueComponent = finalColor.getBlue(); } private void initClass() { if( this != null) { frame = this; frame.add(gradientPane); frame.pack(); } } @Override public void paint(Graphics g) { super.paint(g); paintGradient(g); Rectangle mask = null; for( Component c : getComponents() ) { if( c instanceof JRootPane ) { JRootPane rootPane = (JRootPane) c; rootPane.setDoubleBuffered(true); for( Component cRootPane : rootPane.getComponents()) { if( cRootPane instanceof JLayeredPane) { JLayeredPane cLayerPanels = (JLayeredPane) cRootPane; cLayerPanels.setDoubleBuffered(true); for( Component cLayerPanel : cLayerPanels.getComponents() ) { if( cLayerPanel instanceof JPanel) { JPanel cPanels = (JPanel) cLayerPanel; cPanels.setDoubleBuffered(true); for( Component cPanel : cPanels.getComponents() ) { if( cPanel instanceof JPanel) { JPanel cPanels2 = (JPanel) cPanel; cPanels2.setDoubleBuffered(true); mask = frame.getBounds(); for( Component cPanel2 : cPanels2.getComponents() ) { mask.union(cPanel2.getBounds()); cPanel2.paint(cPanel2.getGraphics()); } } } } } } } } } g.setClip(mask); } private void paintGradient(Graphics g) { if( isColorChanged == true) { initColor(initialColor, finalColor); isColorChanged = false; } if ( orientation == VERTICAL) { if ( this.getWidth() != 0 ) { MAX_WIDTH = this.getWidth(); } if ( this.getHeight() != 0) { MAX_HEIGHT = this.getHeight(); xFinal = MAX_WIDTH; delta = MAX_HEIGHT; } } else if( orientation == HORIZONTAL ) { if ( this.getHeight() != 0 ) { MAX_HEIGHT = this.getHeight(); } if ( this.getWidth() != 0) { MAX_WIDTH = this.getWidth(); yFinal = MAX_HEIGHT; delta = MAX_WIDTH; } } if ( (this.initialColor != null ) &amp;&amp; (this.finalColor != null) ) { if ( delta == 0) { delta = 1; } if( orientation == VERTICAL) { for( int n = 0 ; n &lt; MAX_HEIGHT ; n++) { calculateColor(g, n); g.drawLine(xInitial, n, xFinal, n); } } else if (orientation == HORIZONTAL) { for( int n = 0 ; n &lt; MAX_WIDTH ; n++) { calculateColor(g, n); g.drawLine(n , yInitial, n , yFinal); delta = Math.max( MAX_HEIGHT , MAX_WIDTH); } } } } private void calculateColor(Graphics g, int n) { int redComponent = 0; int greenComponent = 0; int blueComponent = 0; redComponent = interpolateComponent(n, initialRedComponent, finalRedComponent, delta); greenComponent = interpolateComponent(n, initialGreenComponent, finalGreenComponent, delta); blueComponent = interpolateComponent(n, initialBlueComponent, finalBlueComponent, delta); if( redComponent &gt; 255) { redComponent = 255; } else if ( redComponent &lt; 0) { redComponent = 0; } if( greenComponent &gt; 255) { greenComponent = 255; } else if ( greenComponent &lt; 0) { greenComponent = 0; } if( redComponent &gt; 255) { blueComponent = 255; } else if ( redComponent &lt; 0) { blueComponent = 0; } g.setColor( new Color(redComponent , greenComponent , blueComponent , (int) (255 * transparency) )); } private int interpolateComponent( int x , int xInit , int xFinal , int delta ) { int returnValue = 0 ; if ( xInit &lt; xFinal ) { double slope = (xFinal - xInit) / (double) delta ; returnValue = (int) ( xInit + slope * x ); } else if( xFinal &lt; xInit ) { double slope = (xInit - xFinal) / (double) delta ; returnValue = (int) ( xInit - slope * x ); } else { returnValue = xInit; } return returnValue; } @Override public void setVisible(boolean aFlag) { if (aFlag == true) { g = gradientPane.getGraphics(); paint(g); frame.pack(); } super.setVisible(aFlag); } public void setPreferredSize(int width, int height) { setPreferredSize(new Dimension(width, height)); } </code></pre> <p>}</p>
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    1. POjava: How to add Transparent Gradient Background to JFrame
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    1. USLeandro Pezzente
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      1. VTUpMod
    1. COThanks.. this actually works great and lets me apply a gradient to a JFrame component. However all the components painted on the frame are invisible/hidden when the frame loads, and I need to hover over them to make them visible. Could you possibly figure out why could this be the case? I did validate and repaint after adding the components but it didn't help much.
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      1. USRohan
 

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