EVOLUTION

C, C++, Java and

World Wide Web

Contents• C, C++ and Java

• How Java is differ from C programming

• How Java is differ from C++ programming

• Java and Internet

• Java and World Wide Web

• Supported system, Hardware and Software Requirements

• Java Environment

C, C++ and Java

How Java is differ from C Programming

Sr.No.

JAVA C Programming

1. Java is an object oriented language.

C Programming is not an object oriented language

2. Java does not support pointers.

C Programming support pointers.

3. Java does not have a preprocessor.

C Programming has a preprocessor.

4. Java adds new operators such as instanceof and >>>.

C Programming does not have these operators.

5. Java does not contains data types Structure and union

C Programming contains data types Structure and union

How Java is differ from C ++ Programming

Sr.No.

JAVA C++ Programming

1. Java is a true object oriented language.

C++ is basically c with object oriented extension.

2. Java does not support operator overloading.

C++ support operator overloading.

3. Java does not support multiple inheritance.

C++ support multiple inheritance.

4. Java does not use pointers. In c++, we can use pointers.

5. Java does not support global variable.

C++ support global variable.

Java and internet

• Java is strongly associated with internet.

• First application program written in java is “HOTJAVA” (a web browser).

• Support to Internet Protocols: Java has a rich variety of classes that abstracts the Internet protocols like HTTP , FTP, IP, TCP-IP, SMTP, DNS etc.

• Applets in java are used to provide interactive features to web applications.

Java and World Wide Web

• Java and World Wide Web are based on same philosophy i.e. to be used in distributed environments such as internet.

• Before java, World Wide Web is only able to show Still images and text.

• With the support of java World Wide Web become more interactive.

Web Browsers

• Web Browser are used to navigate through the information found in the internet.

• They allow us to retrieve information from the internet.

• Examples of web browsers are:-

• Hot java, Netscape Navigator, internet Explorer.

Supported Systems, Hardware and Software Requirements

• Java is currently supported on following machines:-

• Windows, Linux, Mac OS X

• The minimum hardware & software requirements for Windows XP SP1+ on Java:-

• RAM: 128 MB, 64 MB for Windows XP (32-bit)

• Disk space: 1GB

• Browsers: Internet Explorer 7.0 and above, Firefox 3.6 and above, Chrome.

Java Environment

• Java Environment includes a large number of development tools, hundreds of classes and methods.

• Development tools are the part of system known as JAVA DELOPMENT KIT(JDK).

• Methods and classes are the part of JAVA STANDARD LIBRARY(JSL) or API.