What class allows you to read objects directly from a stream?

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What are three types of loops in java?

0 Answers  

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What is abstraction in java?

0 Answers   Akamai Technologies,

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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 parsing in grammar?

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What is void data type?

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Give the difference between the println method and sqrt method?

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Features of JAVA ? In which version of java synchronizedXXX() methods are included in Collections class.

1 Answers   NIIT,

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How do you start a thread?

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Why does java not support pointers?

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What is the constructor?

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Can we call a non-static method from inside a static method?

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