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 do you mean by ordered and sorted in collections in java?

997

Why java is called not pure object oriented language?

1026

List some important features of java 10 release?

1082

What do you mean by garbage collection used in java?

1070

Why does java does not support multiple inheritance? Explain

978

what do you mean by marker interface in java?

986

What is difference between classpath and path variables in java?

1200

Explain the difference between jvm and jre?

1040

What do you mean by composition in java?

1027

What do you mean by inner class in java?

1087

How we can run a jar file through command prompt in java?

971

List the different types of classloaders in java.

972

What are different access specifiers in java? Explain

1130

Why we used break and continue statement in java?

1151

What is an interface in java? Explain

1199

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Un-Answered Questions { Core Java }

What is a parameter in a function?

1000

what is the difference between thread and runnable types? : Java thread

1010

What access modifiers can be used for methods?

1104

What is boolean example?

975

What is difference between jdk,jre and jvm?

1125

Explain access specifiers?

1179

Can we modify the throws clause of the superclass method while overriding it in the subclass?

1037

What is variable argument in java?

1012

What is generic type?

1032

Will the jvm load the package twice at runtime?

1101

What is difference between printf and scanf?

1160

How do you use wildcards?

1063

State some advantages of java?

1244

Describe the syntax of multiple inheritance? When do we use such an inheritance?

1096

what is aggregation in java?

1021

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