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 string intern in java?

1020

How do you get the length of a string in java?

1008

What is lastindexof in java?

1103

How do you include a string in java?

985

Is string a keyword in java?

1 1433

What does %d do in java?

1038

How use .contains in java?

1171

What are class types in java?

1071

What is <> used for in java?

1110

Can we convert integer to string in java?

1049

What is string length in java?

943

How do you escape in java?

1069

How do you convert int to char in java?

1069

What is indexof in java?

999

How many types of classes are there in java?

1049

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Un-Answered Questions { Core Java }

Enlist diffrent types of inheritance supported by java?

918

take an array with -ve and +ve value both.find out the nearest value of 0(zero).if two values are same like(-2 and +2)then extract +2 is nearest of 0(zero).

1978

what is interface in java? Explain

963

Why stringbuilder is not thread safe?

1028

What is a container in a gui?

981

Explain constructors and types of constructors in java.

1106

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

1029

What is OOP Language?

1069

Which method must be implemented by all threads?

1261

What is the difference between a method and a procedure?

1060

Can a final variable be manipulated in java?

979

What is string pool in java?

1017

What is a subsequence of a string?

1062

How we can skip finally block of exception even if some exception occurs in the exception block in java?

943

Why is string builder not thread safe?

1057

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