What is the default value of an object reference declared as an instance variable?

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What is difference between printf and scanf?

0 Answers  

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How HashMap implemented in java? how it internally works when values are added or searched from hashMap?What is the difference betweenthe implementation of hashmap and Linked Hashmap?

3 Answers   IBM,

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Can we have any code between try and finally blocks?

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What is meant by wrapper classes?

3 Answers  

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What does int [] mean in java?

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import java.io.*; class Demo { public static void main(String args[]) { File f=new File("1234.msg"); String arr[]=f.list(); System.out.println(arr.length); } }

3 Answers   IBM, Ramco,

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Explain public static void main(string args[]).

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How do you check if an arraylist is not empty?

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Give differences between Quicksort & Mergesort. When should these sorts be used and what is their running time?

0 Answers   Genpact,

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difference between byte stream class and character stream class?

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What is sortedmap in java?

0 Answers  

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