Interested to Buy Any Domain ? << Click Here >> for more details...
what is mean by String and StringBuffer?
What is mean by Methooverriding and Overloading?
- 2 Answers
- 5819 Views
- Satyam, I also Faced
- E-Mail Answers
Answers were Sorted based on User's Feedback
Answer / vijayakumar chinnasamy
String:
1. Is final class.
2. Is immutable class i.e value can't change once it is
assigned.
3. When your text is not going to change ,then you use the
String.
4. is not thread safe
StringBuffer:
1. is final class.
2. is mutable object.
3. When your text is going to change and will be accessed
from multiple threads , then you use StringBuffer
4. is thread safe .
Method Overloading:
1. Morethan one method has same name and either the number
of argument or data type of arguments are differ.
2. Method can be overloaded in same class or its subclass.
3. Return type ,access specifier and throws Exception are
not part of overloading.
4. static method can be overloaded by nonstatic method.
Method Overriding:
1. A method has same name,return type, number of argument
and arguments data types are same in subclass and super class.
2. The subclass (inheriting) method has equal or higher
access specifier than it superclass method.
3. The subclass (inheriting) method's throws exception is
equal or subclass excpetion of superclass method(Inherited
class method).
| Is This Answer Correct ? | 7 Yes | 0 No |
Answer / ravi
String is a final class which represents a character
string,string are constant they value cannot be changed
after they r created
its is final class Stringbuffer,Stringbuffer implemets
muttable String character,its is like a string but can be
modified, the length and content can be changed during
method call
| Is This Answer Correct ? | 2 Yes | 0 No |
What is the difference between static and global variables and also define what are volatile variables?
0 Answers Flextronics, Hexaware,
What is functional interface in javatpoint?
What are memory tables?
Tell me a few examples of final classes defined in Java API?
What is the final method?
What is the use of 'super' keyword inside a constructor?
0 Answers Flextronics, Thomson Reuters, Virtusa,
What is the differnence between String Buffer and String builder despite having knowledge that String builder is faster than String Buffer and last one is threadsafe.please tell another important difference.
Can inner class extend any class?
How do you check if a number is a perfect square?
Why would you desing a J2EE application so user data is entered by way of a JSP page and managed by an underlying Java Beans class?
When throw keyword is used?
if a java file without any source code is valid java file?
Core Java 
