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Core Java Interview Questions
Questions Answers Views Company eMail

How do you make an arraylist empty in java?

943

How does remove work in java?

993

Can java list contain duplicates?

1034

Can we declare array without size in java?

1047

How do you remove duplicates from an array in java?

979

Is array size fixed in java?

992

How do you remove an object from an arraylist in java?

990

Is arraylist dynamic in java?

1010

How does system arraycopy work in java?

1147

Does treeset allow null in java?

975

Is array a class in java?

1001

Does java arraylist maintain insertion order?

1006

Can list be null in java?

1058

Can vector have duplicates in java?

967

Is integer immutable in java?

1013


Post New Core Java Questions

Un-Answered Questions { Core Java }

What is methods in java?

1021


Compare java and python.

1003


Is java free for businesses?

1089


describe method overloading

1044


What classes of exceptions may be thrown by a throw statement?

985


What is local declaration?

988


What is java reflection api?

1029


What does int [] mean in java?

1048


What is io stream in java?

1083


What is a constructor, constructor overloading in java?

1009


How do you avoid global variables?

1107


Is a boolean variable?

1025


What are the differences between forwarding () method and sendredirect() methods?

1128


What is a default constructor and also define copy contrucyor?

1131


What is a singleton in genetics?

1099