What are the default and parameterized constructors?


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More Core Java Interview Questions

Can anonymous class have constructor?

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How can we pass argument to a function by reference instead of pass by value?

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Explain the polymorphism principle?

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explain about casting of objects?

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What makes a function well defined?

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Can an unreachable object become reachable again?

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What will be the output of the program? public class Test { public static void main(String args[]) { ArrayList<String> list = new ArrayList<String>(); list.add("2"); list.add("3"); list.add("4"); list.add("5"); System.out.println("size :"+list.size()); for(int i=0;i<list.size();i++) { list.remove(i); } System.out.println("size after:"+list.size()); } }

5 Answers   Rolta,


What is difference between hashset and hashmap?

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Difference between linkedlist and arraylist.

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Which class is extended by all other classes?

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what is custom tags with example?

3 Answers   Amdocs,


can we take more than one null values for Unique constraints.

1 Answers   3i Infotech,


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