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 the high-level thread states? : Java thread

1016

how to create multithreaded program? Explain different ways of using thread? : Java thread

986

how to create multithreaded program? Explain different ways of using thread? When a thread is created and started, what is its initial state? : Java thread

1002

what is the volatile modifier for? : Java thread

998

why are there separate wait and sleep methods? : Java thread

1025

how would you implement a thread pool? : Java thread

917

can I implement my own start() method? : Java thread

991

what is the swingutilities.invokelater(runnable) method for? : Java thread

1040

what is mutual exclusion? How can you take care of mutual exclusion using java threads? : Java thread

1119

what is the difference between process and thread? : Java thread

991

can java object be locked down for exclusive use by a given thread? : Java thread

1099

a thread is runnable, how does that work? : Java thread

1013

what are the states associated in the thread? : Java thread

1049

how does the run() method in runnable work? : Java thread

920

what is an objects lock and which objects have locks? : Java thread

1019

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Un-Answered Questions { Core Java }

Difference between concurrent hashmap and hashtable and collections

1065

Can we extend immutable class?

989

What are filterstreams?

1076

What is lifetime variable?

960

What is == in java?

1016

Why is java logo a cup of coffee?

1174

What are thread priorities and importance of thread priorities in java?

1139

Differentiate between overriding and overloading cases?

1106

Can finally block be used without a catch?

1009

What do you mean by mnemonics?

1051

How many bytes is a string?

1133

Write a program to print 15 random numbers using foreach of java 8?

936

Name container classes in java programming?

1101

Difference between error and exception

6060

What are the restrictions imposed by a Security Manager on Applets?.

2613

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