1)What is Java?
2)Features of Java?
3)Differences betweend JDK , JRE and JVM ?

4)Types of classloaders in java?
5)Is it possible to execute java program without main methods?

6)What is typecasting?

7)What is static import in java?
8)Which is a default package in java?
9) What is JIT compiler
10)How many memories are there in java?
11) What is native method in java?
12) What is Garbage Collector ?
13) What is identifier?
14) What .class file contains ?
15) Is java support access specifiers?
16) What is program?
17)Types of variables in java?
18) Types of blocks in java?

19)Explain main method ?
20)Is java purely object oriented or not?