What is the difference between pass by reference and pass by pointer?

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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Is java a digit method?

0 Answers  

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How can I become a good programmer?

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What type of variable is gender?

0 Answers  

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what is web.xml?and its use?

7 Answers   CTS,

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how we can write the string concatenation program in java.

3 Answers  

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what is the use of clone() in real time scenario?

2 Answers   Quinnox,

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What are streams?

0 Answers  

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how copy the hashmap object into arraylist at java program?

4 Answers   HCL, Wipro,

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If a method is declared as protected, where may the method be accessed in java programming?

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How many types of string data types are there?

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