Which oo concept is achieved by using overloading and overriding?

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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Can we cast any other type to boolean type with type casting?

0 Answers  

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What is continuity of a function?

0 Answers  

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What is the difference between compile-time polymorphism and runtime polymorphism?

0 Answers  

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which method is used to know the status of the Thread?

9 Answers   Honeywell,

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what is meant wrapper classes?

0 Answers  

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How to declare an arraylist in java?

0 Answers  

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What is the most important feature of java? What is an interface?

0 Answers  

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Write a java program to count the number of words present in a string?

0 Answers  

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Explain about the performance aspects of core java?

0 Answers  

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Why do inner class cannot have static declaration except static nested class?

2 Answers   TCS, Wipro,

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