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

Core Java Interview Questions

Questions Answers Views Company eMail

Define canvas?

1029

What will be the default values of all the elements of an array defined as an instance variable?

1088

What’s the difference between the methods sleep() and wait()?

1073

What’s the difference between constructors and other methods?

1052

Is it possible to define a method in java class but provide it’s implementation in the code of another language like c?

1074

Is it correct to say that due to garbage collection feature in java, a java program never goes out of memory?

1088

What environment variables do I need to set on my machine in order to be able to run java programs?

1066

What are the restriction imposed on a static method or a static block of code?

1106

What will happen to the exception object after exception handling?

1050

What will happen if static modifier is removed from the signature of the main method?

1021

What is the difference between superclass and subclass?

1257

What is meant by inheritance and what are its advantages?

1170

Under what conditions is an object’s finalize() method invoked by the garbage collector?

1110

If a method is declared as protected, where may the method be accessed?

1074

What is constructor chaining and how is it achieved in java?

1255

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Un-Answered Questions { Core Java }

placement papaers of spring computing technology

1460

Which is a valid identifier?

1314

How do you take thread dump in java?

1061

What is class level lock ?

1085

What is foreach loop in java?

1075

Why we cannot override static method?

1132

What method is used to specify a container's layout in java programming?

1216

Is integer a class?

1132

When can you say a graph to be a tree?

1139

What is an 8 bit word?

1102

Can a class be private?

1017

What's the access scope of protected access specifier?

1105

What is the difference between form & report?

1094

Which is the class in java?

1119

Is array an object in java?

1024

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