Name and explain the types of ways which are used to pass arguments in any function in java.

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How does java enable high performance?

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Do we need to manually write Copy Constructor?

0 Answers   HCL,

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How to perform selection sort in java?

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A abstract class extending an abstract class.Super class has both abstract and non-abstract methods.How can we implement abstract and non-abstract mehtods? Explain with snippet

3 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 a hashmap used for?

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What are the advantages of exception handling?

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Is java a compiler?

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Name component subclasses that support painting in java programming?

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What is difference between protected and private?

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Name the package that always imported by default?

4 Answers  

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