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**Posted:** Fri Jul 24, 2009 7:51 am

Introduction

Collection is defined as several things grouped together.

Java collection framework is made up of various interfaces to work with different groups. Implementation of the interfaces allow us to do our job but this means that data structure can be changed without changing the code.

Java.util package contains an interface called Collection. Collection is an interface which means it defines abstract methods (methods without body). The classes implementing this interface will define the implementation ...

**Posted:** Fri Jul 24, 2009 7:47 am

MIDlets are an important part of J2ME technology. A MIDlet is simply a Java class with special features. To execute a MIDlet on a device, the target device should implement Java ME, CLDC and MIDP to run. MIDlets posses "compile once, run anywhere" feature which makes them very portable. MIDlet are distributes using jar and jad files file.

A MIDlet class whould have the following:

- The main class should extend javax.microedition.midlet.MIDlet.
- The MIDlet ...

**Posted:** Fri Jul 24, 2009 7:41 am

Code:
System.out.println();

This is a frequently used statement in Java. If you are working in Eclipse, you can save time using following shortcut:

type: syso
now presss CTRL + SPACE BAR

**Posted:** Fri Jul 24, 2009 7:40 am

Hibernate is a widely used open source software that provides object-relational mapping (ORM) solution for the Java language. It provides an easy to use framework for mapping an object-oriented domain model to a traditional relational database. It eases the work of application developer by generating the database code so developer does not have to handle relational data persistence-related programming tasks.

Java Persistence with Hibernate

Java provides JDBC to work with databases but the problem is ...

**Posted:** Fri Jul 24, 2009 7:35 am

Code:
import java.awt.*;
import java.net.*;
import javax.swing.*;

public class Anima {
public static void main(String[] args) throws MalformedURLException {

URL url = new URL("<URL to your Animated GIF>");
Icon icon = new ImageIcon(url);
JLabel label = new JLabel(icon);

JFrame f = new JFrame("Animation");
f.getContentPane().add(label);
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
f.pack();
f.setLocationRelativeTo(null);
f.setVisible(true);
}
}

**Posted:** Fri Jul 24, 2009 7:34 am

import java.awt.*;
import java.awt.image.BufferedImage;
import java.io.*;
import javax.imageio.ImageIO;
import javax.swing.*;

public class LoadAndShow extends JPanel {
BufferedImage image;
Dimension size = new Dimension();

public LoadAndShow(BufferedImage image) {
this.image = image;
size.setSize(image.getWidth(), image.getHeight());
}

/**
* Drawing an image can allow for more
* flexibility in processing/editing.
*/
protected void paintComponent(Graphics g) {
// Center image in this component.
int x = (getWidth() - size.width)/2;
int y = (getHeight() - size.height)/2;
g.drawImage(image, x, y, this);
} ...

**Posted:** Fri Jul 24, 2009 7:32 am

Code:
-Xms256m -Xmx512m -XX:PermSize=64M -XX:MaxPermSize=1000M

These values should be provided to the VM.

**Posted:** Fri Jul 24, 2009 7:31 am

If you've ever tried to implement secure communication between a Java client and an HTTPS (HyperText Transfer Protocol Secure) server, you've probably discovered that the standard java.net.URL class doesn't support the HTTPS protocol. The server-side implementation of that equation is fairly straightforward. Almost any Web server available today provides a mechanism for requesting data, using HTTPS. Once you have your Web server set up, any browser can request secure information from your server simply by ...

**Posted:** Fri Jul 24, 2009 7:30 am

in the site computersciencenotes.net section FAQ->Programming-> "send file with Java" explain how send a File using java socket.

- in section Download->Java->JavaProgramming there is a Project divided in 2 part: client and Server, that you can use for send a file.

**Posted:** Fri Jul 24, 2009 7:28 am

Hibernate has a configuration file called hibernate.properties or hibernate.cfg.xml. There you can specify the properties of database like
Code:

Code:
hibernate.connection.driver_class jdbc driver class
hibernate.connection.url jdbc URL
hibernate.connection.username database user
hibernate.connection.password database user password
hibernate.connection.pool_size maximum number of pooled connections

By default if you download the hibernate source , it will working on hsqldb.

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