How do you declare a variable?
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What is private public protected in java?
garbate collector(GC)?
What is float in java?
How do you compare objects in java?
Write a java program to generate fibonacci series ?
Discuss about garbage collector in Java.
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Can an interface be final?
What are the names of Component subclasses that support painting?
Can a class extend 2 classes in java?
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
What is difference between final and immutable?
What is the difference between actual and formal parameters?