Which interface does java.util.hashtable implement?

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Hi Friends , am newbie to ajax. For example just consider one account registration - A form contains 8 text fields with submit button. In this form second texbox contains "username " . On right side of text box there is a label box . On clilck action i need to determine user is available or not. Is it possible on clicking label or should i click submit button.

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In HashSet duplicates are allowed while adding to the HashSet, but while retreiving the object from HashSet is not shown the duplicate values, WHY ?

2 Answers   Cap Gemini,

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HOW MUCH PERCENTAGE WE DEDUCT FOR OUR SUPPLIERS OR OTHER PROFESSIONALS

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my interviewer asked me what technical specification you used how to answer that question

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what is the difference between through and throws?

2 Answers   HCL,

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what is the difference between banking and insurance domain?

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What are the different types of ways where you can iterate over a list? : java collections

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What are the queues in the java collection framework? : java collections

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Explain JSP life cycle?

2 Answers   Accenture,

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What are the types of java collections? : java collections

0 Answers  

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what is difference between struts1.2 and struts2.0

1 Answers  

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