Java is a high level programming language developed by Sun Microsystems in 1995, later acquired by Oracle Corporation. Java runs multiple platform supported such as Windows, Linux, Mac OS and various systems. Java is an object- oriented programming language, robust and secure.

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

Platform-: Any hardware or software environment in which a program runs, is known as a platform. Java provides cross-platform computer environment means write in a single platform and run multiple platform.

Similarities-: Java is similar to C++ and C++ is similar to C.

Types of Java Applications-:

·        Standalone Application

·        Web Application

·        Enterprise Application

·        Mobile Application

·        Mobile Application

Features of java-:

·    Object-oriented programming (OOP) attempts to provide a model for

programming based on objects.

·    Platform independent: java is platform independent means write once and runs

anywhere. Basically java has two components

1.       Runtime Environment

2.      API(Application Programming Interface)

·   Secured -: Java does not use explicit pointer.

·   Robust-: Java uses strong memory management. It does not use pointer. Here is automatic garbage collection.

·   Portable-: we can use or carry my code in any platform because java use bytecode and its run any platform.

·    High- Performance-: Java is faster than other language.

·    Multi-threaded-: In java we can run many applications or tasks within same time. For example we are using web application and also listening song.

Internal details-:  In java when we write a program then what happens with java

code