how we can make a write-only class in java?

0 Answers  

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Can constructor return value?

0 Answers  

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What are the differences between abstract class and interface?

0 Answers  

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System.out & System.in are final static data member of System class but we can change there reference through setOut() & setIn() method how...

2 Answers   FCS, TCS,

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What is unicode 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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What should I import for arraylist in java?

0 Answers  

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Explain runtime exceptions?

0 Answers  

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For which statements we use a label?

3 Answers   Wipro,

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How to Sort list of Strings in ascending order without using java api.

1 Answers   HCL, NIIT,

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What is static variable and static method?

32 Answers   Accenture, Prolific, Prolifics, TCS, TNH,

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What is a byte string?

0 Answers  

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