Advanced Java

New York University

School of Continuing and Professional Studies

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Language of the Future

• By the year 2005 all software applications will be web based.

• Most, if not all of those will be written in Java.

• “Write once run everywhere”

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Course Objectives

• Train students in writing java programs – including applets.

• Enhance understanding and knowledge of java APIs and frameworks.

• Prepare students for sun’s java certification programs.

• Provide resources and support to help students achieve their career objectives.

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Prerequisites

• Basic knowledge of computers.

• Familiarity with any plain text editor (like notepad).

• Working in command line mode.

• Java language Fundamentals

• Ability to write, compile and run a basic Java program and applet

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Useful but Not Required

• Knowledge of or experience with C++

• Basic concepts of Object Oriented Design and Programming.

• Knowledge of HTML.

• Knowledge of Database concepts and familiarity with SQL

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Students’ Expectations From This Course

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Agenda

• Every Tuesday/Wednesday evening from 6:20 PM to 9:20 PM - Prefer 6 pm to 9 pm if all students agree, and if the time is not invonvenient for anyone.

• For every 3 hours of lecture, student is expected to do “hands on” for at least 3 hours.

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Overview • Focus on Object Oriented Design and

Development using Java.

• Coverage of latest technologies in Web Applications development

Threads, Applets

JDBC,RMI,EJBs

Servlets, JSPs, Beans, XML

StreamsFilesI/IO

AWT,Events

Lists, Vectors,Sockets

Objects and Classes

Java Libraries,OOD, OOP

LanguageFundamentals

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Session 1

• Java certification overview

• Introduction to programming and java

• First java program

• First java applet

• Language Fundamentals

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Session 2

• Streams and File I/O

• Multithreading

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Session 3

• Collections

• Interfaces and inheritance

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Session 4

• Concepts in Socket Programming

• Java Network Programming

• Implementing Socket based clients and servers in Java

• Java Beans

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Session 5

• Basic Database concepts

• Java Database Connectivity

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Session 6

• Java Servlets

• Java Server Pages

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Day 7

• RMI

• Enterprise Java Beans

• SWING

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Session 8

• AWT

• Event driven programming

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Session 9

• Java and XML

• XML and XSLT

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Session 10

• Java Native Interfaces

• Final Exam

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Questions or Comments

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Java Certification

• Programmer

• Developer

• Architect

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Sun Certified Programmer for Java 2 Platform

Exam number: 310-025

Exam type: multiple choice/short answer

No of questions: approximately 59

Pass score: 61%

Test time: 2 hours

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Sun Certified Developer for Java 2 Platform

Exam Number: 310-027

Exam Type: Code Example and Instructions

Pass Score: 80%

Test Time: Limited to life of the program.

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Sun Certified Architect forJava 2 Platform

Exam Number: 310-050

Exam Type: multiple choice/short answer

No. of Questions: approximately 60

Pass Score: 75%

Test Time: 2 hours

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Exam Registration

Exam if offered by sylvan Prometric

Http://www.sylvanprometric.Com

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Introduction to Java

• Language

• Programming Tool

• Virtual Machine Environment

• Framework of Classes/Interfaces

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Advantages of Java

• Simple• Portable• Object oriented• Interpreted• Distributed• Architecture neutral

• High performance• Robust• Multithreaded• Secure• Dynamic• Quick development

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First Java Program

• Source Code Example – Welcome.java

• Compiling and Running the first Java program– Create the program source file– Compile it using javac

C:>javac Welcome.java

– Run it using java C:>java Welcome

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Parts of a Java program

• Class name

• The “main” method

• Variable declarations

• Assignment statements

• Program instructions

• Calls to other methods of other classes

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Java Applets

• Java code

• HTML code

• Flavours of applets

• Applet example

• Running applets

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Java Language Fundamentals

• Comments

• Data types

• Variables

• Reserved words (Java keywords)

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Java Language Fundamentals

• Assignments

• Initializers

• Conversions between numeric types

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Java Language Fundamentals

• Constants

• Operators

• Operator precedence

• Expression evaluation

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Java Language Fundamentals

• Strings

• Concatenation

• Testing for equality

Feedback

Questions or Comments

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Control Flow

• Statement

• Expression

• Block

• Control structure

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Conditional Statements

if (condition)

statement;

else

statement;

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Loops

while ( condition )

statement;

for ( int i = 0; i < 5; i++ )

statement;

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Multiple Selections

switch ( variable )

{

case <constant>: statement;

break;

case <constant>: statement;

break;

default: statement;

}

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Class Methods

Program components – or functions

Must be inside a class definition

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Arrays

• Arrays are Objects in Java

• Creating an array

• Initializing an array

• Copying an array

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Arrays

• Arrays may be passed to methods

• Arrays may be returned from methods

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Multidimensional Arrays

• Matrix

• Array of Arrays

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Objects and Classes

• A class is a “template” or a “blueprint”

• Objects are the “cookies” or “buildings”

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Objects and Classes

• Creating new objects

• Data encapsulation

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Objects

• Black-box approach

• Object’s behavior

• Object’s state

• Object’s identity

• Instances of a class

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An Order Processing System

• Item

• Order

• Shipping address

• Payment

• Account

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Methods

• Order.addItem

• Order.ship

• Order.cancel

• Payment.authorize

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Relationship between Classes

• Uses

• Has-A

• Is-A

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Traditional Programming

GlobalData

function

function

function

function

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Object Oriented Programming

Object 1

Object 3

Object 2

method

method

method

method

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Examples

• Card.java

• CardDeck.java

• EmployeeTest.java