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 a hashmap used for?

1185

What is the new line character?

1120

Where is the find and replace?

949

What is string pooling concept?

1008

What is parseint?

968

Does substring create a new object?

955

What is charat ()?

897

What is the r character?

982

How do you declare a variable?

1048

What does int argc char * argv [] mean?

943

How do you change an int to a string?

953

How do you escape a string?

921

What is difference between filereader and bufferedreader?

903

What does indexof mean?

959

What is the use of bufferedreader?

961

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Un-Answered Questions { Core Java }

write a program that list all permutations of ABCDEF in which A appears before B?

2442

How would you convert bytes to string?

944

How the metacharacters are different from the ordinary characters?

982

How do you compare objects in java?

890

How hashset works internally in java?

1027

Explain the inheritance?

930

What is the difference between a checked and an unchecked exception?

935

What is the maximum size of list in java?

916

What are conditionals and its types?

1084

Can java program run without jre?

964

How many bits is a char?

934

Can subclass overriding method declare an exception if parent class method doesn't throw an exception?

1009

Explain access modifiers in java.

982

What are the characteristics of Final,Finally and Finalize keywords.

1132

What is stream api in java8?

1090

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