can write code for serialization ?

1 Answers   HCL, MegaSoft,

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What is inheritance?

5 Answers   Accenture, Hexaware, Syntel,

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Can a final variable be initialized in constructor?

0 Answers  

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Can we overload the main() method?

0 Answers  

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When wait(), notify(), notifyall() methods are called does it releases the lock or holds the acquired lock?

0 Answers  

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Why is stringbuffer called mutable?

0 Answers  

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Is heap stored in ram?

0 Answers  

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What are virtual functions?

2 Answers  

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What is meant by local variable and instance variable?

0 Answers  

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Describe OOP in java?

2 Answers   Syntel,

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what methods would you overwrite in java.lang.object class?

0 Answers  

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public class AboutStrings{ public static void main(String args[]){ String s1="hello"; String s2="hel"; String s3="lo"; String s4=s2+s3; //to know the hash codes of s1,s4. System.out.println(s1.hashCode()); System.out.println(s4.hashCode()); // these two s1 and s4 are having same hashcodes. if(s1==s4){ System.out.println("s1 and s4 are same."); }else System.out.println("s1 and s4 are not same."); } } Somebody told me that, == operator compares references of the objects. In the above example even though s1 and s4 are refering to same object(having same hash codes), it is printing s1 and s4 are not same. Can anybody explain in detail why it is behaving like this? Thanks in Advance RavuriVinod

4 Answers   TCS,

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