Java Basic Interview Questions

Java Basic Interview Questions:

1.Brief history of Java
2.How java is platform independent
3.What is JVM
4.What is JDK
5.What is JRE
6.List features of JAVA
7.Who calls the main method in java ?
8.Explain the working of JVM
9.Can we put more than one main class in a single java file?
10.Can we put more than one public class in single java file ?