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 is ascii code?

1287

What is the difference between access specifiers and access modifiers in java?

1193

Explain java coding standards for variables ?

1181

What is an error in java?

1165

Can we nested try statements in java?

1112

Explain the importance of join() method in thread class?

1109

Can we write any code after throw statement?

1066

Explain thread in java?

1180

Why to use nested classes in java?

1135

Explain creating threads by implementing runnable class?

1189

Objects or references which of them gets garbage collected?

979

What are nested classes in java?

1132

Difference between character constant and string constant in java ?

1032

Can static methods access instance variables in java?

1101

Difference between object and reference?

1187

Post New Core Java Questions

Un-Answered Questions { Core Java }

What is comparable and comparator interface? List their differences

1117

Which method you will use to create a new file to store some log data. Each time a new log entry is necessary, write string to the file in java ?

1179

What is methodological theory?

1011

What is the use of hashmap in java?

1098

Suppose if we have variable ' I ' in run method, if I can create one or more thread each thread will occupy a separate copy or same variable will be shared?

1070

How to optimize the javac output?

1044

Does java allow default arguments?

1009

Explain notifyall() method of object class ?

1098

What are keyboard events?

1168

Is an array a vector?

1059

What is an infinite loop in java? Explain with an example.

1080

What is the size of integer?

1109

Explain the term virtual machine?

1061

What are the uses of synchronized keyword?

1013

What is the difference between multiple processes and multiple threads?

1224

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