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

Core Java Interview Questions

Questions Answers Views Company eMail

If you are given the name of the function at run time how will you invoke the function?

Adobe, Yahoo,

1156

What is class??

Tech Mahindra,

1256

Explain the scope of a variable.

TCS,

1110

What do you mean by static variable?

TCS,

1078

What is a class instance variable?

Tech Mahindra,

1136

What is generic class?

Tech Mahindra,

1105

What function extracts specified characters from a string?

1016

What are different types of classloaders?

1034

Can we use String with switch case?

1203

What are the important features of Java 10 release?

1004

What do you mean by platform independence of Java?

1171

How to run a JAR file through command prompt?

1299

What is try-with-resources in java?

1185

What is JVM and is it platform independent?

1068

What is composition in java?

1304

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Un-Answered Questions { Core Java }

What is arrays fill in java?

1033

What is anonymous inner class?

1091

what is comparable and comparator interface?

1004

What is role of void keyword in declaring functions?

1066

What is private static in java?

1057

Define an applet in java?

1174

What does %d do in java?

1058

What is downcasting?

1127

What is the basic difference between string and stringbuffer object?

1099

What is the difference between the boolean & operator and the && operator in java programming?

1060

worst case complexities of Quick sort and Merge sort.

1046

What is the map interface in java programming?

1026

How does finally block differ from finalize() method?

1066

Which types of exceptions are caught at compile time?

1049

What is the difference between interface & abstract class?

1058

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