Can bool be null?

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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Define how does a try statement determine which catch clause should be used to handle an exception?

0 Answers  

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Which programming language is best in future?

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Explain the overview of UDP messaging.

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What is tochararray in java?

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Difference between this(), super()?

12 Answers   College School Exams Tests, Oracle,

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When can an object reference be cast to an interface reference in java programming?

0 Answers  

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Can we override private methods?

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What is a Null object?

1 Answers   Wipro,

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What is nested class?

0 Answers  

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Does java initialize arrays to zero?

0 Answers  

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