advance java

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Buddha Institute Of Technology, Gida,
Gorakhpur

• PRESENTATION ON ADVANCE JAVA

Dhananjay Prajapati
(1452510903) Department of Computer science and
Eng. 4th year
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Content

1. Introduction
2. Collection
3. Multithreading
4. Java - Networking
5. AWT
6. Swing
7. JDBC
8. JSP
9. Applet

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Introduction

• Java programming language was originally
  developed by Sun Microsystems which was initiated
  by James Gosling and released in 1995 as core
  component of Sun Microsystems' Java platform
  (Java 1.0 J2SE). The latest release of the Java
  Standard Edition is Java SE 8.
• Object Oriented - In Java, everything is an
  Object. Java can be easily extended since it is
  based on the Object model.
• Platform Independent - it is not compiled into
  platform specific machine, rather into platform
  independent byte code. This byte code is
  distributed over the web and interpreted by the
  Virtual Machine (JVM) on whichever platform it is
  being run on.
• Simple - Java is designed to be easy to learn. If
  you understand the basic concept of OOP Java, it
  would be easy to master.
• Secure - With Java's secure feature it enables to
  develop virus-free, tamper-free systems.
  Authentication techniques are based on public-key
  encryption.

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Collection

• Collection framework provides a well designed set
  of interface and classes for storing and
  manipulating groups of data as a signal unit a
  collection.
• It provides a standard programming interface to
  many of the most common abstractions, without
  blundering the programmer with to many procedure
  and interfaces.
• Collocation tree part-
• 1. List-Array List
• 2. Set- Tree set ,Hash set, Link hash set
• 3. map- Hash Map, Hash Table, Tree Map

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Multithreading

• Java is multithreaded programming language which
  means we can develop multithreaded program using
  java. A multithreaded program contains two or
  more parts that can ran concurrently and each
  part can handle different task at the same time
  making optimal use of the available resources
  specially when your computer has multiple CPU.

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Life Cycle of a Thread
New
Runnable
Unlock signal signal all
Thread completes
Await Sleep
Interval expires
Await lock
Waiting
Terminated
Timed Waiting
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Java-Networking

• The term Network programming refers to writing
  programs that execute across multiple
  devices(Computers), In which the devices are all
  connected to each other using a networks.
• The Java net package of the J2se API contains a
  collection of classes and interfaces that provide
  the low-level communication details, allowing you
  to write programs that focuses on solving problem
  at hand.
• The java net package provides support for the two
  common network protocols.

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Networks Protocols

• TCP- TCP stands for transmission control
  protocol, which allows for reliable communication
  between two application. TCP is typically used
  over the Internet Protocol, which is referred to
  as TCP/IP.
• UDP- UDP stands for User Datagram Protocol, a
  connection-less protocol that allows for packets
  of data to be transmitters between application.
• Socket programming- This is most widely used
  concept in networking and it has been explained
  in very details.
• URL Processing- This would be covered separately.
  Click here to learn about URL Processing in java
  language

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AWT(Abstract windowing Toolkit)

• Java AWT (Abstract Windowing Toolkit) is an API
  to develop GUI or window-based application in
  java.
• 1) AWT components are platform-dependent.
• 2) AWT components are heavyweight.
• 3)AWT doesn't support pluggable look and feel.
• 4) AWT provides less components than Swing.
• 5) AWT doesn't follows MVC(Model View Controller)
  where model represents data, view represents
  presentation and controller acts as an interface
  between model and view.

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Java AWT Hierarchy
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AWT Program

• import java.awt.   
• class First extends Frame
•   
• First()
•   
• Button bnew Button("click me")   
• b.setBounds(30,100,80,30)
  // setting button position   
• add(b)
  //adding button into frame   
• setSize(300,300)
  //frame size 300 width and 300 height   
• setLayout(null)
  //no layout manager   
• setVisible(true)
  //now frame will be visible, by default not visibl
  e   
•   
• public static void main(String args)   
• First fnew First()   
•   

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Swing

• Java Swing is a part of Java Foundation Classes
  (JFC) that is used to create window-based
  applications. It is built on the top of AWT
  (Abstract Windowing Toolkit) API and entirely
  written in java.
• 1) Java swing components are platform-independent.
  
• 2) Swing components are lightweight.
• 3) Swing supports pluggable look and feel.
• 4) Swing provides more powerful components such
  as tables, lists, scroll panes, color chooser,
  tabbed pane etc.
• 5) Swing follows MVC.

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Swing API
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Swing Program

• Simple Java Swing Example
• import javax.swing.   
• public class FirstSwingExample 
•   
• public static void main(String args)
•     
• JFrame fnew JFrame()
  //creating instance of JFrame              
• JButton bnew JButton("click")
  //creating instance of JButton   
• b.setBounds(130,100,100, 40)
  //x axis, y axis, width, height             
• f.add(b)
  //adding button in JFrame            
• f.setSize(400,500)
  //400 width and 500 height   
• f.setLayout(null)
  //using no layout managers   
• f.setVisible(true)
  //making the frame visible   
•   
•   

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JDBC(Java Data Base Connectivity)

• Java Database Connectivity(JDBC) is
  an Application Programming Interface(API) used to
  connect Java application with Database. JDBC is
  used to interact with various type of Database
  such as Oracle, MS Access, My SQL and SQL Server.
  JDBC can also be defined as the
  platform-independent interface between a
  relational database and Java programming. It
  allows java program to execute SQL statement and
  retrieve result from database.
• Steps to connect a Java Application to Database
• The following 5 steps are the basic steps
  involve in connecting a Java application with
  Database using JDBC.

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JDBC

1. Register the Driver(Class.forName("sun.jdbc.odbc.J
   dbcOdbcDriver") )
2. Create a Connection (Connection con
   DriverManager.getConnection ("jdbcoraclethin_at_lo
   calhost1521XE","username","password"))
3. Create SQL Statement- Statement
   scon.createStatement()
4. Execute SQL Statement- (ResultSet
   rss.executeQuery("select from user")
   while(rs.next()) System.out.println(rs.getString
   (1)" "rs.getString(2)) )
5. Closing the connection- con.close()

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JSP(Java Server Page)

• Java Server Pages (JSP) is a server-side
  programming technology that enables the creation
  of dynamic, platform-independent method for
  building Web-based applications. JSP have access
  to the entire family of Java APIs, including the
  JDBC API to access enterprise databases.
• The following are the paths followed by a JSP
• Compilation
• Initialization (public void jspInit() )
• Execution (void _jspService(HttpServletRequest
  request, HttpServletResponse response) )
• Cleanup (public void jspDestroy() )

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Working
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JSP Syntax

• Syntax
  Purpose
• jspinclude Includes a file at the time
  the page is requested
• jspuseBean Finds or instantiates a
  JavaBean
• jspsetProperty Sets the property of a
  JavaBean
• jspgetProperty Inserts the property of a
  JavaBean into
• jspforward Forwards the requester to a
  new page
• jspplugin Generates browser-specific
  code that makes an OBJECT or EMBED tag for
  the Java plugin
• jspelement Defines XML elements
  dynamically.

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Applets

• Applet is a special type of program that is
  embedded in the webpage to generate the dynamic
  content. It runs inside the browser and works at
  client side.
• Lifecycle of Java Applet
• 1.public void init() is used to initialized the
  Applet. It is invoked only once.
• 2.public void start() is invoked after the
  init() method or browser is maximized. It is used
  to start the Applet.
• 3.public void stop() is used to stop the Applet.
  It is invoked when Applet is stop or browser is
  minimized.
• 4.public void destroy() is used to destroy the
  Applet. It is invoked only once.

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Program Applet

• import java.applet.Applet   
• import java.awt.Graphics   
• public class First extends Applet
•     
• public void paint(Graphics g)
•   
• g.drawString("welcome",150,150)   
•    
•   
• Note class must be public because its object is
  created by Java Plug in software that resides on
  the browser.
• myapplet.html
• lthtmlgt   
• ltbodygt   
• ltapplet code"First.class" width"300" height"300
  "gt   
• lt/appletgt   
• lt/bodygt   
• lt/htmlgt  

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• Thank You