What are Java local variables, member variables, global variables?

public class Test {
   Private String name;//member variable, also global variable

   public void ChangeName () {
       String n = "Tomoya";//n is a local variable
       name = N;
   }
}

In general, defined in the class, that is, the name of the position, is the member variable, in Java, global variables and member variables is a meaning.
Defined in a method or domain is called a local variable, so-called domain is {} inside, for example
public void Show () {
   int b = 2;//local variable
   if (true) {
       int a = 1;//local variable
   }
   This location has access to a, invalid
}
This location, or other method of accessing B, is invalid

His range of functions:
The local variable left his domain {} to be invalid
The scope of the member variable depends on his access modifier, what is the access modifier?

Protected
Private
By default, you define when you don't give him an access modifier is the default

1, private modifier, that the members are private, only their own can access;   
2, protected, represents the protected permission, embodied in inheritance, that is, subclasses can access the parent class protected members, while other classes within the same package can also access the protected members.   
3, no modifier words (default), indicating the package access rights (friendly, the Java language is not friendly this modifier, so that the name should be derived from C + +), the same package can be accessed, access is the package level access rights;  
4, public modifier, that the member is open, all other classes can be accessed;

What are Java local variables, member variables, global variables?