How will you reverse a singly-link list?

0 Answers   Akamai Technologies,

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what is mean by String and StringBuffer? What is mean by Methooverriding and Overloading?

3 Answers   Satyam, STI,

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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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Name the methods in mouse listeners ?

4 Answers  

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What is the difference between jdk, jre, and jvm?

0 Answers  

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What is used of static keyword in java?

0 Answers   Cyient,

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What is 3-tier model?

3 Answers   Wipro,

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What is the tradeoff between using an unordered array versus an ordered array?

0 Answers  

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How to do a true java ping from windows?

0 Answers  

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Does string is thread-safe in java?

0 Answers  

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What is an accessor?

1 Answers   BirlaSoft,

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Can long be null in java?

0 Answers  

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