paintcomponent

Hi I have following classes, I want display content (paintComponentor that panel with this rectangle from paint class) inside my JFrame. I try already find out how to achieve this by looking at different examples posted on this forum however this doesn't help me I need simple example like panel inside frame with paint component or something similar to understand how should work! ps. don't hang me on tree because I am newbie jut ask question!!! [I want something like this][1] package scp; import java.awt.*; import javax.swing.*; public class Panel extends JPanel { public Panel() { //this

I am trying to draw shapes (triangle, rectangle, square and circle) that can be used in creating a picture. A user should be able to place a shape on a canvas and drag it around or even enlarge it to create a desired picture. I tried overriding the paintComponent() of a JPanel to achieve this but realize that the Jpanels shape remains a square so when you have a circle you can still drag it even if u are not necessarily touching it as it is within a square and also having difficulty drawing the triangle What libraries would you suggest? The Shape interface and derived classes, such as Path2D,

I created a JPanel and i modify it a bit. I change it's background to gradient color here is the class. public class JGradientPanel extends JPanel { private static final int N = 32; private Color color1, color2; public JGradientPanel(Color color1, Color color2) { this.setBorder(BorderFactory.createEmptyBorder(N, N, N, N)); this.color1 = color1; this.color2 = color2; } @Override public void paintComponent(Graphics g) { super.paintComponent(g); Graphics2D g2d = (Graphics2D) g; //Color color1 = getBackground(); //Color color2 = color1.darker(); int w = getWidth(); int h = getHeight();

I am putting together a slideshow program that will measure a user's time spent on each slide. The slideshow goes through several different magic tricks. Each trick is shown twice. Interim images are shown between the repetition. Transition images are shown between each trick. On the first repetition of a trick the JPanel color flashes on the screen after a click before the next image is shown. This doesn't happen during the second repetition of the same trick. It's possible that the image is taking too long to load. Is there an easy way to pre-load the images so that there isn't a delay the

I have a code like that: // In MyPanel.java public void paintComponent(Graphics g) { super.paintComponent(g); // Draw something mypanel_count++; } // In Test.java public void testLargeData() { while (notDone) { panel.repaint(); // do huge work test_count++; System.out.println("Test_count: " + test_count + ", MyPanel_count: " + mypanel_count); } } // Output !!! Test_count: 752, MyPanel_count: 23 Test_count: 753, MyPanel_count: 23 Test_count: 754, MyPanel_count: 23 Test_count: 755, MyPanel_count: 24 But when I change panel.repaint() to panel.paintComponent(panel.getGraphics()) , the out is right