questions on java programming code example

Example: basic java interview questions

There are many questions that can be made to test your java knowledge,
like the ones below:

Explain JDK, JRE and JVM?
Explain public static void main(String args[]) in Java
Why Java is platform independent?
Why Java is not 100% Object-oriented?
What are wrapper classes in Java?
What are constructors in Java?
What is singleton class in Java and how can we make a class singleton?
What is the difference between Array list and vector in Java?
What is the difference between equals() and == in Java?
What are the differences between Heap and Stack Memory in Java?

You can find more questions in the link below :)
https://www.edureka.co/blog/interview-questions/java-interview-questions/