What is difference between static method and static
variable?
Answer Posted / joh-b tanzania
The static keyword denotes that a member variable, or method, can be accessed without requiring an instantiation of the class to which it belongs.
In simple terms, it means that you can call a method, even if you've never created the object to which it belongs! Every time you run a stand-alone application (which requires a static main method), the virtual machine can call the main method without creating a new application object. Of course, unless the application's methods are all static, you will need to create an instance of it at some point.
With regard to member variables, it means that they can be read from, and written to, without creating an object. You may have noticed that many classes create constants that can be read, without creating an object.
static final int VERSION = 2;
Static member variables are shared by all instances of the class to which they belong. When writing classes, this can be a handy feature. Consider the following example, where a counter is used to track how many myObject instantiations have taken place.
public class myObject
{
static int objectCount = 0;
public myObject()
{
objectCount++;
}
public String toString()
{
return new String ("There are " + objectCount + " objects");
}
}
Is This Answer Correct ? | 3 Yes | 1 No |
Post New Answer View All Answers
How do listeners work?
What is java’s garbage collected heap?
In the below example, what will be the output?
Can we have multiple public classes in a java source file?
How the metacharacters are different from the ordinary characters?
Is it possible for a yielded thread to get chance for its execution again?
Why wait and notify methods are declared in object class?
Is java an open source?
who can i handle multiple client in RMI
How do you override a private method in java?
What is static data type in java?
How do I remove a character from a string in java?
What are the advantages and disadvantages of reference counting in garbage collection?
What do you understand by java virtual machine?
Explain covariant method overriding in java.