Write a java program to check if a number is prime or not?

0 Answers  

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What are the benefits of operations?

0 Answers  

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What is better - 'bit-shift a value' or 'multiply by 2'?

0 Answers   DELL,

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What is a arraylist in java?

0 Answers  

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what is jdk1.5 features?

6 Answers   AMS, Virtusa,

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What modifiers may be used with an inner class that is a member of an outer class in java programming?

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Difference between hashCode() & equals()?

3 Answers   HCL,

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What is floor in java?

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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How to compare strings in java?

0 Answers  

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IS method overriding is Duplication of Methods?

5 Answers   CybAge,

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What is meant by inheritance and what are its advantages?

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