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  1. Re: Difference between interface and abstract class? are they both same

    Abstract class and interfaces are completely different.

    1) In an abstract class, you may also have some concrete methods( fully implemented. It can have all its methods as concrete, yet be...
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    5,985

    Re: Diff B/W Interface & Abstract class

    Hi Sree,

    Abstract class and interfaces are completely different.

    1) In an abstract class, you may also have some concrete methods( fully implemented. It can have all its methods as concrete,...
  3. Answers
    18
    Views
    16,106

    Re: when we use String and StringBuffer?

    Strings are immutable ie. once they are defined they cant be changed. so when you know that the data you are defining is going to change or get modified, aty that time you can use Strinmg Buffer.
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