******************* Message.java Applet that reads customization parameters from an HTML file ******************* import java.applet.Applet; import java.awt.*; **************** public class Message extends Applet { private int fontSize; private String message; public void init() { setBackground(Color.black); setForeground(Color.white); // Base font size on window height. fontSize = …
Tag: code
Aug 26
Accesses methods in a Ship2 object
********************************************* Test2.java Accesses methods in a Ship2 object ********************************************* // Give the ship public move and printLocation methods. class Ship2 { public double x=0.0, y=0.0, speed=1.0, direction=0.0; public String name = “UnnamedShip”; private double degreesToRadians(double degrees) { return(degrees * Math.PI / 180.0); } public void move() { double …
Aug 26
Placement of buttons in a BoxLayout using rigid areas, struts, and glue
############### InvisibleComponentTest.java Placement of buttons in a BoxLayout using rigid areas, struts, and glue ############### import java.awt.*; import javax.swing.*; import javax.swing.border.*; /** Example of using rigid areas, struts, and glue to * produce the effect of invisible components. * ****************** public class InvisibleComponentTest extends JPanel { Component spacer; public InvisibleComponentTest() { setLayout(new …
Aug 26
Adds typing to the freehand drawing.
import java.applet.Applet; import java.awt.*; import java.awt.event.*; /** A better whiteboard that lets you enter * text in addition to freehand drawing. * ****************** public class Whiteboard extends SimpleWhiteboard { protected FontMetrics fm; public void init() { super.init(); Font font = new Font(“Serif”, Font.BOLD, 20); setFont(font); fm = getFontMetrics(font); …
Aug 26
java Nested container where the top-level panels are positioned by hand
###################### ButtonCol.java Nested container where the top-level panels are positioned by hand ###################### import java.applet.Applet; import java.awt.*; /** An example of a layout performed manually. The top-level * panels are positioned by hand, after you determine the size * of the applet. Since applets can’t be resized in most * browsers, setting the size once …
Aug 26
Layout of complicated GUI by taking advantage of nested containers
################# NestedLayout.java Layout of complicated GUI by taking advantage of nested containers. Uses WindowUtilities.java and ExitListener.java. ################## import java.awt.*; import java.awt.event.*; import java.util.*; import javax.swing.*; import javax.swing.border.*; import javax.swing.event.*; /** An example demonstrating the use of nested containers * to lay out the components. See GridBagTest.java for * implementation by a single layout manager, GridBagLayout. …
Aug 26
A demo providing multiple buttons to select a playing card-A Panel, using CardLayout control which of four possible subpanels, holding a different card, to display
####################### # CardDemo.java A demo providing multiple buttons to select a playing card. A Panel, using CardLayout control which of four possible subpanels, holding a different card, to display.Uses the following class and images: * CardPanel.java A Panel that displays a playing card. * ImageLabel.java A Canvas for displaying images. * Ace.gif, …
Aug 26
BorderLayout divides the window into five regions
# BorderTest.java Five buttons arranged by BorderLayout BorderLayout divides the window into five regions: NORTH, SOUTH, EAST, WEST, and CENTER. /./././././././././././././ import java.applet.Applet; import java.awt.*; /** An example of BorderLayout. * &&&&&&&&&&&&&&&&&&&&&&&&&&& public class BorderTest extends Applet { public void init() { setLayout(new BorderLayout()); add(new Button(“Button 1”), BorderLayout.NORTH); add(new Button(“Button 2”), …
Aug 26
Checkboxes
Checkboxes.java Inherits from CloseableFrame.java. ****************** import java.awt.*; /./././././././././ public class Checkboxes extends CloseableFrame { public static void main(String[] args) { new Checkboxes(); } public Checkboxes() { super(“Checkboxes”); setFont(new Font(“SansSerif”, Font.BOLD, 18)); setLayout(new GridLayout(0, 2)); Checkbox box; for(int i=0; i<12; i++) { box = new Checkbox(“Checkbox …
Aug 26
Places a Panel holding 100 buttons in a ScrollPane
import java.applet.Applet; import java.awt.*; /** Places a Panel holding 100 buttons in a ScrollPane that is * too small to hold it. * */ public class ScrollPaneTest extends Applet { public void init() { setLayout(new BorderLayout()); ScrollPane pane = new ScrollPane(); Panel bigPanel = new Panel(); bigPanel.setLayout(new GridLayout(10, 10)); …
