Difference between JDK, JRE, JVM

16 Answers   Deloitte, HCL, Mind Tree, Oracle, Reliance, TCS, ThinkBox,

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How many threads can java run?

0 Answers  

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Why Java is not pure Object Oriented language?

0 Answers  

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What is the difference between assignment and initialization?

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 is the use of anonymous inner classes ?

12 Answers   DELL, HCL,

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program to find 25 square = 625 here the 625 of last two digits is equal to 25, i don't know excatly what this type of number is called

1 Answers   Huawei,

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What is the purpose of default constructor?

0 Answers  

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What is function and method in java?

0 Answers  

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Difference between abstract class and Interfaces?

7 Answers   CTS, iFlex, PA Consulting, Sai Softech, Value Chain,

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basic difference b/w ALL types of JDBC driver.

1 Answers   Systematix,

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What types of inheritance does Java support?

2 Answers  

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