M1 PT1 Flashcards by Clarice Anne Estrellado

Introduction to Java Technology

Java language, originally called the ‘X’

Oak

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Java language was developed by X at X

James
Gosling

Sun Microsystems

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Sun Microsystems is now a subsidiary of

Oracle Corporation

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Javal language was released in X as a core component of Sun

Microsystems’ Java platform

1995

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It has derived much of its syntax from C and C++ but has a simpler
object model and fewer low-level facilities.

java language

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is a general-purpose, concurrent, class-based, object-
oriented language that is specifically designed to have as few
implementation dependencies as possible.

Java

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files with .java extension

java source code files

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java source code files compiles into a format called

bytecode (files with .class 
extension)

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can be executed by a Java interpreter.

bytecode (files with .class 
extension)

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It was intended for use in Sun’s project research to work on a
programming software to control electronic devices

java

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It was modified to take advantage of the World Wide Web.

Java

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The X, later named as X, was the very first

web browser created in Java.

WebRunner

HotJava

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In 1995, the X internet browser was also

developed to support Java.

Netscape Navigator

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X is a portable language that could run
on any platform. The language was able to do
this by generating intermediate code for a
hypothetical computer called a virtual machine.

Java

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X is a

program that runs on all computers.

Java Virtual Machine (JVM)

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The X
creates a software simulation of a CPU and
memory and handles all communication between
the Java program and the underlying operating
system and hardware.

Java Virtual Machine (JVM)

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The Java source code (.java file) is normally 
compiled to produce the bytecode file (.class file) 
which is normally interpreted by the X

Java virtual

machine (JVM)

The JVM and Application architecure

source code (myProgram.java)

javac (java compiler)

byte code (myProgram.class)

java virtual machine (interpreter)

machine code (output on the computer screen)

Java 2 Software Development Kit contains

java, javac, javadoc, other tools

the loader for Java applications

java

the compiler

javac

the documentation generator

javadoc

Steps in Creating a Java Application

Create the source code.
Compile the source code.
Run the program

An X is a computer software to
help computer programmers develop
software

Integrated Development

Environment

What does an Integrated Development | Environment consist of:

- Source code Editor. - Compiler and/or interpreter. - Build- automation tools.

The Leaders:

- NetBeans - Microsoft Visual Studio - Eclipse

Tools For Object Oriented Design:

- Object inspector. - Class Browser. - Class hierarchy diagram.

X abstracts the configuration necessary to piece together various utilities in one unit, which could ease the learning of a language, and increases developer productivity.

Integrated Development | Environment

Most IDEs today have X that simplify the development of UIs, which is critical for commercial software today.

GUI modeling utilities

NetBeans all started as a student project called X

Xelfi

NetBeans' Goal was to write a X in Java for the | first time

Delphi-like Java IDE

A fast fully-featured Integrated Development Environment | (IDE) with support for Java.

NetBeans

Compliant applications for accelerating development across | all major OS platforms.

NetBeans

Provides an open source, high performance, modular, extensible, multi-platform Java IDE for GUI, mobile tools, Web, and Desktop applications

NetBeans

Written in java and therefore runs on every operating | system that supports Java VM

NetBeans

easily configured user interface and a | modular architecture extensible with additional plugins.

Environment:

support for multiple source roots, easy management of libraries, easily ported to other environments, all based on Apache Ant.

Project System:

Web Application project type, Supports the J2EE 1.3 and 1.4 standards with web application build support based on Apache Ant.

Web Development:

easy to create | and deploy and import java beans

Enterprise Java Beans (EJB) Development:

X wizards for creating web services and web services clients, providing the basic (java/wsdl) code needed, and easy to use testing tools of existing web services.

Web Services Development: