It's an easy question but difficult to answer. Java is a programming language developed by Sun Microsystems. We call Java as platform independent because you can use Java anywhere i.e in
- Mobile phones
- Refrigerators etc etc... Today every machine uses Java. Even ur phone must be java enabled.
When we talk in-depth of java
We write a program in java and save it as "xxx.java"
When u compile this , it is converted as "xxx.class"
This ".class" file can be used in any operating system, linux, mac, Windows if it is java enabled i.e Platform independent.
Java became popular mainly because Java is used in web applications rapidly.
If ur phone is Java enabled, u can own wide applications like weather forecast, games, softwares because they were all done in java.
In real time applications for space, for controlling machines, java is used.
U can learn Java from here. Java is very very essential if u in the field of computer science. Learn java from
Take care. Bye.