Interested to Buy Any Domain ? << Click Here >> for more details...
Answer Posted / modi[achir communication]
[Short answer: threads are lightweight, programs (aka
processes or tasks) are heavyweight. -Alex]
Lightweight and heavyweight processes refer the mechanics of
a multi-processing system.
In a lightweight process, threads are used to divvy up the
workload. Here you would see one process executing in the OS
(for this application or service.) This process would posess
1 or more threads. Each of the threads in this process
shares the same address space. Because threads share their
address space, communication between the threads is simple
and efficient. Each thread could be compared to a process in
a heavyweight scenario.
In a heavyweight process, new processes are created to
perform the work in parallel. Here (for the same application
or service), you would see multiple processes running. Each
heavyweight process contains its own address space.
Communication between these processes would involve
additional communications mechanisms such as sockets or pipes.
The benefits of a lightweight process come from the
conservation of resources. Since threads use the same code
section, data section and OS resources, less overall
resources are used. The drawback is now you have to ensure
your system is thread-safe. You have to make sure the
threads don't step on each other. Fortunately, Java provides
the necessary tools to allow you to do this.
| Is This Answer Correct ? | 14 Yes | 4 No |
Post New Answer View All Answers
Which package is needed for swing components?
What is java swing components?
Why swing components are called lightweight components?
How does accessibility works in swings?
What are the advantages of swing?
What is the difference between invokeAndWait() and invokeLater()?
What is java swing application?
What is frame in java swing?
What are the containers available in swing?
What are swings awt?
I want to use the markerfor playing a video using the jmf.Suppose my video length is of 2 hours.I want it to play ex-15 mintue or 20 mintue and should stop after assigning the time.I am providing my piece of code............please help me.... package com.jha.cdac.lila.praveen; import java.awt.BorderLayout; import java.awt.Component; import java.awt.Container; import java.awt.Dimension; import java.awt.Toolkit; import java.awt.event.WindowAdapter; import java.awt.event.WindowEvent; import java.io.File; import java.net.URL; import javax.media.ControllerAdapter; import javax.media.Manager; /** * * @author vinays */ import javax.media.Player; import javax.media.RealizeCompleteEvent; import javax.media.Time; import javax.swing.JFrame; public class PlayVideo extends javax.swing.JFrame{ Player player; Component center; Component south; // this code is required for playing the video file of mpeg,mp4,mp3,3gp,rm,flv, //wmf,mpv,vob,qt and the asf extension public PlayVideo() { File file = new File("Lesson1.mpg"); try { load(file); // load() } catch (Exception ex) { //Logger.getLogger(LessonNarrative.class.getName ()).log(Level.SEVERE, null, ex); System.out.println("Error while loading file............"+ex); } } //the piece of code given below is used to load the file which user want to play. public void load(final File file) //load the file throws Exception { URL url = file.toURL(); final Container contentPane = getContentPane(); if (player != null) { player.stop(); } // MediaLocator mediaLocator=new MediaLocator (file.toURL()); // DataSource dataSource=Manager.createDataSource (mediaLocator); // player=Manager.createPlayer(url); player = Manager.createRealizedPlayer(url); ControllerAdapter listener = new ControllerAdapter() { @Override public void realizeComplete( RealizeCompleteEvent event) { Component vc = player.getVisualComponent(); player.getVisualComponent(); if (vc != null) { contentPane.add(vc, BorderLayout.CENTER); center = vc; } else { if (center != null) { contentPane.remove(center); contentPane.validate(); } } Component cpc = player.getControlPanelComponent(); if (cpc != null) { contentPane.add(cpc, BorderLayout.SOUTH); south=cpc; } else { if (south != null) { contentPane.remove(south); contentPane.validate(); } } pack(); // //setTitle(file.getName()); //to get the title of Video or Audio File } }; Time tm=new Time(30.4402403); Time tm1=new Time(5.7256199); player.addControllerListener(listener); player.setMediaTime(tm1); player.setStopTime(tm); // player.setMediaTime(new Time(5.0)); //player.setStopTime(new Time(73)); player.realize(); player.start(); } public static void main(String args[]) throws ClassNotFoundException { PlayVideo pv = new PlayVideo(); JFrame f = new JFrame("Lesson1"); f.addWindowListener(new WindowAdapter() { @Override public void windowClosing(WindowEvent e) { System.exit(0); } }); f.getContentPane().add("Center", pv); f.pack(); Dimension screenSize = Toolkit.getDefaultToolkit ().getScreenSize(); int w = 420; int h = 140; pv.setLocation(screenSize.width/2 - w/2, screenSize.height/2 - h/2); pv.setSize(w, h); pv.setVisible(true); }
Which is better swing or awt?
What are the advantages of swing over awt?
Why is model-view-controller architecture used in swing?
Which types of components are used in designing swing based gui?
