Answer / supraja

Arrays
Has special language support
• Iterators
Iterator (i)
• Collections (also called containers)
Collection (i)
Set (i),
HashSet (c), TreeSet (c)
List (i),
ArrayList (c), LinkedList (c)
Map (i),
HashMap (c), TreeMap (c)

What is the code inside the public void actionPerformed(ActionEvent ae) override method in Applet [ Condition:- you have one TextField and One Button , you have to enter any color name inside the TextField, when you click on Button Your background will change according to your input color name]

2 Answers   IBM,

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how to make a un-checked exception as a checked exception one.

2 Answers  

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What is operator overloading. Is it is supported in java?

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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What is the difference between the paint() and repaint() methods?

0 Answers  

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Can Exception handling we can handle multiple catch blocks?

0 Answers   PUCIT,

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What is multithreading in java?

0 Answers  

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Why does java doesnt suuport unsigned values?

0 Answers   ABC,

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What is boolean flag in java?

0 Answers  

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List down the methods and interfaces of collection class in java.

0 Answers  

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How can final class be used?

5 Answers   Accenture, Wipro,

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Explain about join() method?

0 Answers  

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