Core Java Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Core Java Interview Questions

Questions Answers Views Company eMail

Can we declare a class as static?

1113

Can we have try without catch block?

1101

What is the use of System class?

1178

What is Enum in Java?

1329

What is Java Annotations?

1118

What are the important features of Java 9 release?

1016

When can we say that threads are not lightweight process in java?

1175

What is a blocking method in Java?

1260

What are the main differences between notify and notifyAll in Java?

1108

Can It is possible to synchronize the constructor of a Java Class?

1149

Can you start a thread twice in Java?

1135

What are the two main uses of volatile in Java?

1075

How to create a thread in java?

1149

How can you share data between two thread in Java?

960

What is Java Shutdown Hook?

1217

Post New Core Java Questions

Un-Answered Questions { Core Java }

What do you mean by of string::valueof expression in java 8?

976

What is java virtual machine and how it is considered in context of java’s platform independent feature?

1187

What are the disadvantages of object oriented programming?

1290

Can a vector contain heterogenous objects?

1087

What is binary tree in java?

1072

What is an iterator interface in java programming?

978

Can we declare the static variables and methods in an abstract class?

1002

How will you invoke any external process in java?

1130

Explain about version control?

1059

If an object is garbage collected, can it become reachable again?

1024

What are nested classes in java?

1132

What is the scope or life time of instance variables?

1132

How to Sort Strings which are given in List and display in ascending order without using java api.

4456

What is this keyword in java?

1047

Is there any sort function in java?

1057

For More Un-Answered { Core Java } Questions Click Here