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Explain static in java.
A static variable is attached with the class as a whole and not with specific
instances of a class.
Each object shares a common copy of the static variables which means there is
only one copy per class, no matter how many objects are created from it.
Static variables are declared with the static keyword in a class.
Static variables are always called by the class name.
It is created when the program starts and gets destroyed when the programs
stops.
Static methods are implicitly final, because overriding is done based on the
type of the object
Static methods are attached to a class, not an object.
A static method in a superclass can be shadowed by another static method in a
subclass, as long as the original method was not declared final.
You can’t override a static method with a non-static method which means you
can’t change a static method into an instance method in a subclass.
Non-static variables has unique values with each object instance.
When is static variable loaded? Is it at compile time or runtime?
Static variable are loaded when classloader brings the class to the JVM.
It is not necessary that an object has to be created. Static variables will be
allocated memory space when they have been loaded.
The code in a static block is loaded/executed only once i.e. when the class is
first initialized.
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