What's a static variable?

Question

is there a difference between static and local variable?

Answer 1

Example: static int y = 0; When a variable is declared with the keyword static , its called a class variable . All instances share the same copy of the variable. A class variable can be accessed directly with the class, without the need to create a instance.

Answer 2

Yes
Local variable:Variables under the block of function is called local variable and get destroyed after the function is completed
Static variable:If you declare any variable as static, it is known static variable.It saves your memory.Suppose a class called Students Suppose there is a class called students
class Student{
int rollno;
String name;
String college="ITS";
}
There are 500 students in my college, now all instance data members will get memory each time when object is created.All student have its unique rollno and name so instance data member is good.Here, college refers to the common property of all objects.If we make it static,this field will get memory only once
AND Java static property is shared to all objects or is same for every object.

Answer 3

A static (accessed throughout whole class) variable last the whole program and can be accessed by other functions within your program while local can only be accessed in the function/method you created it in.

Answer 4

Thank you for all!