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Common Design Pattern

What is command design pattern? Explain this pattern based on below scenario Map m=new HashMap(); HashMap m=new HashMap(); What is difference between Map m=new HashMap(); HashMap m=new HashMap();
Asked by: mannam haribabu chowdary | Member Since Aug-2012 | Asked on: Aug 27th, 2012

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Prasad MN

Answered On : Mar 19th, 2013

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The main difference of creation of hashmp instance

HashMap hm = new HashMap(); Here we are getting the HashMap methods only will get inherited.

Where as
Map mp= new HashMap(); // Here will get the Map interface methods inherited into class.

  
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