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

Core Java Interview Questions

Questions Answers Views Company eMail

What are synchronized methods ?

1130

What is a lock or purpose of locks in java?

1044

In how many ways we can do synchronization in java?

986

What is difference between c++ and java ?

1141

Explain a situation where finally block will not be executed?

1053

Explain yield() method in thread class ?

1079

What is class level lock ?

1046

What happens if we don’t override run method ?

1023

Explain about static nested classes in java?

1078

Can we create constructor in abstract class ?

1075

Explain purpose of sleep() method in java?

1135

What does null mean in java?

1087

How to do encapsulation in java?

1062

Can one thread block the other thread?

1043

Explain about instanceof operator in java?

1064

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Un-Answered Questions { Core Java }

What is the java virtual machine?

1108

How do you find the maximum number from an array without comparing and sorting?

1138

How many arguments can be passed to main ()?

1011

What is a JAR file?

1055

What are the properties of thread?

943

Is 0 true or false?

1018

How do you declare a string variable?

1032

What is return used for in java?

1039

What is a flag and how does it work?

1024

What is a qualifier in a sentence?

1006

What is a method in coding?

1072

List out five keywords related to exception handling ?

1031

is there a separate stack for each thread in java? : Java thread

987

Can I declare a class as private?

1099

Why java is used everywhere?

1022

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