Kramer import java.awt.*; import java.awt.event.*; import
javax.swing.*; import java.util.Random; import java.text.*; public class NegExp extends JFrame { //elements of user interface private JLabel trialsJLabel; private JLabel meanJLabel; private JLabel devJLabel; private JLabel MuJLabel; private JLabel BetaServiceJLabel; private JLabel errorRateJLabel; private JLabel LambdaJLabel; private JLabel BetaJLabel; private JLabel servTimeJLabel; //package negexp; // W.
(1) import
javax.virtualsense.actuators.Leds; (2) (3) public class Blink (4) { (5) (6) public static void motemain() (7) { (8) boolean state=true; (9) while(true) (10) { (11) for (int i=0; i<3; i++) (12) { (13) Leds.setLed(i,state); (14) Thread.sleep(1000); (15) } (16) state=!state; (17) } (18) } (19) } The java code of a simple led-blinking application is reported in Algorithm 1.
The Servlet API, contained in the Java package hierarchy
javax.servlet, defines the expected interactions of a Web container and a servlet.
The Java class library is full of many event-generating classes, particularly in the
javax.swing package.
import java.applet.AudioClip; import java.awt.FlowLayout; import
javax. swing.JApplet; public class LoadAudioAndPlay extends JApplet { private AudioClip sound1, sound2, currentSound; public void init() { setLayout( new FlowLayout()); sound1=getAudioClip(getDocumentBase(),"welcome.wav"); currentSound =sound1; currentSound.play(); } // end method init // stop the sound when the user switches Web pages public void stop() { currentSound.stop(); // stop AudioClip } // end method stop } // end class LoadAudioAndPlay
import
javax.swing.JApplet ; import
javax.swing.JLabel ; public class MyProgram extends JApplet { JLabel myLabel ; public void init() { myLabel = new JLabel ; ("Java") myLabel .