what is meant by string pooling?
- 12 Answers
- 36268 Views
- Oracle, Polaris, Tribal Fusion, Wipro, I also Faced
- E-Mail Answers
Answer Posted / ranganathkini
A string pool is a collection of references to String
objects. Strings, even though they are immutable, are still
objects like any other in Java. Objects are created on the
heap and Strings are no exception. So, Strings that are part
of the "String Literal Pool" still live on the heap, but
they have references to them from the String Literal Pool.
When a .java file is compiled into a .class file, any String
literals are noted in a special way, just as all constants
are. When a class is loaded (note that loading happens prior
to initialization), the JVM goes through the code for the
class and looks for String literals. When it finds one, it
checks to see if an equivalent String is already referenced
from the heap. If not, it creates a String instance on the
heap and stores a reference to that object in the constant
table. Once a reference is made to that String object, any
references to that String literal throughout your program
are simply replaced with the reference to the object
referenced from the String Literal Pool.
| Is This Answer Correct ? | 37 Yes | 4 No |
Post New Answer View All Answers
What is the difference between a choice and a list?
Who found java?
Explain different ways of creating a thread. Which one would you prefer and why?
Explain about public and private access specifiers?
What is 32 bit float?
What is scanner in java?
What are filterstreams?
What are loops in java? What are three types of loops?
How many types of memory areas are allocated by JVM in java?
What is tree node in java?
Difference between operator overloading and function overloading
Are functions objects in java?
What does the “final” keyword mean in front of a variable? A method? A class?
What technique is carried out to find out if a particular string is empty?
Is java a digit method?
