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

Core Java Interview Questions

Questions Answers Views Company eMail

Justify your answer that you can't define a method inside another method in java, if you can then how?

1108

Differentiate between array list and vector in java.

1075

What is outofmemoryerror in java?

Cyient,

981

What do you understand by classes in java?

961

Why do we create public static method in java?

1057

Why we do exception handling in java and how many types of exceptions are there?

1066

What is operator overloading. Is it is supported in java?

971

What is the difference between jdk, jre, and jvm?

1059

What is difference between equals and hashcode method?

1068

What is the purpose of final keyword and when to use it?

959

What is difference overloading and overriding?

Cyient,

1101

What is difference between throw and throws ?

Cyient,

1090

How thread scheduler schedule the task?

1011

Explain constructors and types of constructors in java.

1055

Differentiate between stringbuffer and stringbuilder in java.

989

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Un-Answered Questions { Core Java }

How does java pattern compile work?

926

What are "class access modifiers" in Java?

1073

What is difference between static variable and global variable?

1012

Implementations of set interface?

969

How do you find the independent variable?

997

Difference between comparator and comparable in java?

1039

What is the difference between the font and fontmetrics classes in java programming?

1059

Can I import same package/class twice?

904

What’s the difference between constructors and other methods?

951

What is :: operator in java 8?

970

What is a method header?

978

What is public static void main?

1064

How does indexof work?

906

What is the hashcode () and equals () used for?

973

What is the generic function?

942

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