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

Core Java Interview Questions

Questions Answers Views Company eMail

How to declare an arraylist in java?

1189

Why string is not thread safe?

1044

What is complexity and its types?

1095

What are heterogeneous objects?

1084

Does java vector allow null?

1005

Can a class have 2 constructors?

959

What is time complexity algorithm?

1096

What is java util hashmap?

1030

Can constructor be protected in java?

1017

What does system out println () do?

1068

Can static methods be inherited?

1101

Can we convert list to set in java?

1048

What are sets in java?

998

What is hashmap in java?

1107

Are arrays static in java?

1101

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Un-Answered Questions { Core Java }

What is the do while loop syntax?

1081

What is the finalize method do?

1148

How do you sort an array in java?

1042

Is array an object in java?

1017

Can anonymous class have constructor?

1063

Does variable declaration allocate memory?

1089

how we can create packages in java?

1013

Define "Access specifiers" in java.

1214

What is the difference between inheritance and encapsulation?

1194

What is overriding in java?

1118

How to sort array of 0 and 1 in java?

998

What is meant by vector class, dictionary class, hash table class, and property class?

1233

What java ide should I use?

1044

What are the various access specifiers for java classes?

1113

What are reference variables in java?

1176

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