I have a String s = java; What is the output when I say s.replaceAll('j', 'k'); Also what is the value of s after replacing?

8 Answers   KPIT,

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Why do we need to override equals() and hascode() method of object class?

1 Answers   Cognizant,

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I want to persist data of objects for later use. What is the best approach to do so?

0 Answers  

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Name the method that is used to set a TextComponent to the read-only state?

1 Answers  

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Marker interface means , interface which has no methods.Then what is the necessity of its usage.I read "it tells the compiler that it should be treated differently ". "It is used to store state of an object". But still am not clear.Please explain clearly.

2 Answers  

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What do you mean by data type?

0 Answers  

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suppose we have an interface & that interface contains five methods. if a class implements that interface then we have to bound that to give tha definition of all five methods in that class. If we declare that class as abstract then can we call only two methods to give the deinition of that method & i don't want to give the definition of all the methods? can it possible

6 Answers   HP, Wipro,

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What is the largest long allowed by java?

0 Answers  

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Why does java have different data types for integers and floating-point values?

0 Answers  

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What is unicode datatype?

0 Answers  

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What's the difference between comparison done by equals method and == operator?

0 Answers  

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how does multithreading take place on a computer with a single cpu? : Java thread

0 Answers  

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