Introduction To Java

history of Java:

  Java is a programming language created by James Gosling from Sun Microsystems (Sun) initiated the Java language project in June 1991. The target of Java is to write a program once and then run this program on multiple operating systems. The first publicly available version of Java (Java 1.0) was released in 1995.The current version of Java is Java 1.8 which is also known as java 8.

Features of java:

  ■ Simple: Java was designed to be easy for the professional programmer to learn and use effectively. If you already understand the basic concepts of object-oriented programming,

  ■ Secure: With Java's secure feature it enables to develop virus-free, tamper-free systems. Authentication techniques are based on public-key encryption.

  ■ Portable: You can compile a code on one machine and run it on other machines this feature make java portable.

  ■ Object-oriented: Java is OO because they provide capabilities such as encapsulation, inheritance, polymorphism, abstract data types, classes

  ■ Robust: Java makes an effort to eliminate error prone situations by emphasizing mainly on compile time error checking and run time checking.

  ■ Multithreaded: java supports multithreaded programming, which allows you to write programs that do many things simultaneously.

  ■ Interpreted: Java is a compiled programming language, but rather than compile straight to executable machine code, it compiles to an intermediate binary form called JVM byte code. The byte code is then compiled and interpreted to run the program.

  ■ High performance: With the use of Just-In-Time compilers, Java enables high performance.

  ■ Distributed: Java is designed for the distributed environment of the Internet, because it handles TCP/IP protocols.

  ■ Dynamic: Java is considered to be more dynamic than C or C++ since it is designed to adapt to an evolving environment. Java programs can carry extensive amount of run-time information that can be used to verify and resolve accesses to objects on run-time.

Tools you will need run java program:

You will need the following software:

·        Linux 7.1 or Windows xp/7/8 operating system.

·        Java JDK 8.

·        Microsoft Notepad or any other text editor.