awt

I am writing a program where I need to do different actions for a separate class depending on which button is clicked. public class NewJFrame{ public static JButton b1; public static JButton b2; public static JButton b3; } public class Slot{ int value; JButton button; Slot(int value, JButton button) { this.value=value; this.button=button; } } public class Game{ Slot[] slots=new Slot[3]; Game(){ slots[0]=new Slot(1,NewJFrame.b1); slots[1]=new Slot(2,NewJFrame.b2); slots[2]=new Slot(3,NewJFrame.b3); } public void actionPerformed(ActionEvent e) { for(int i=0;i<3;i++){ if(e.getSource()==slots[i]

I got some interesting ideas and criticism from this , this and this post (see last post for the code of the GUI in question). Nevertheless, I'm still quite confused about some things. Mainly, what is the least expensive way of displaying user-introduces graphics? More specifically, I used a paintComponent() method from JPanel class by making an object of this class in the MouseDragged() method together with paintComponent(getGraphics()) method ( AuxClass2 and AuxClass1 accordingly). Apparently, using getGraphics() and paintComponent() instead of repaint() are bad ideas, I suspect something to

I want to display a tree in a Java GUI, but I dont know how. The tree represents a graph of connected nodes, like this: I should say that I have my own tree class: public class BinaryTree { private BinaryNode root; public BinaryTree( ) { root = null; } public BinaryTree( Object rootItem ) { root = new BinaryNode( rootItem, null, null ); } public BinaryTree( Object rootItem,BinaryNode a,BinaryNode b ) { root = new BinaryNode( rootItem, a, b ); } public int leavesCount(){ return BinaryNode.leavesCount(root); } public boolean equal(BinaryTree a,BinaryTree b){ return BinaryNode.equal(a.root, b

I am learning about JPanel and GridLayout , this snippet of code will produce a simple JPanel with 6 buttons package testing; import java.io.*; import java.util.*; import java.security.*; import javax.xml.bind.DatatypeConverter; import java.lang.*; import java.awt.*; import javax.swing.*; public class Testing { public static class GridPanel extends JPanel { public GridPanel() { setLayout(new GridLayout(2,3)); setBackground(Color.GREEN); this.setPreferredSize(new Dimension(500,500)); JButton b1 = new JButton ("Button 1"); JButton b2 = new JButton ("Button 2"); JButton b3 = new JButton ("Button

I was wondering whether there is any way to convert an image/graphic into a Shape ? For example, can I convert the outline of a motorcycle shape into a Shape so I can then use it in Java? I know you can do it with normal squares or with rounded corners, polygons, etc. But is there a way to do a custom shape? motorcycle.jpg motorcycle-03.png ImageOutline.java This code requires some patience (when running). import java.awt.*; import java.awt.image.BufferedImage; import java.awt.geom.Area; import javax.imageio.ImageIO; import java.io.File; import java.util.Date; import javax.swing.*; /*

I've been integrating the Substance look and feel into my application and ran into several problems regarding it's internal EDT (Event Dispatch Thread) checking routines. Substance absolutely refuses to construct UI classes outside of the EDT. I've done plenty of Swing/AWT and I know most of the rules regarding the EDT. I use SwingWorker, SwingUtilties.invokeLater to modify components. I always though that components could be CONSTRUCTED outside of the EDT, but must be realized and manipulated on the EDT. In other words, you can construct and setup defaults in the background but the call to