It is something that holds a value.
ex:
string holds text.
char holds one character.
integer holds numbers.
etc
They can be declared by...
string myWords = "Hello, World!";
System.out.println(myWords);
This code will make a console say whatever is inside of that variable, which happens to be: "Hello, World!".
Java does not have the concept of Reference Variables. We cannot access the memory location where the data is stored in Java.
no
Global variables are globally accessible. Java does not support globally accessible variables due to following reasons:The global variables breaks the referential transparencyGlobal variables creates collisions in namespac
There's no global variables in Java.
At any given point of time you cann't get the address of a variables of java program. This is meant for security purpose only.
Reference variables
No, static variables are not serialized.
yes we can define a variable in an interface in java.
no
Yes. You can have as many variables as you want in Java
Member Variables
No, they are not.