C# Public Access Modifier

using System; //w ww. j  av  a 2  s.  co m
 
class MyClass {  
  private int a; // private access explicitly specified 
  int b;          // private access by default 
  public int gamma;  // public access 
   
  public void setAlpha(int val) { 
    a = val;  
  } 
 
  public int getAlpha() { 
    return a; 
  } 
 
  public void setBeta(int a) { 
    b = a;  
  } 
 
  public int getBeta() { 
    return b; 
  } 
}  
  
class AccessDemo {  
  public static void Main() {  
    MyClass ob = new MyClass();  
  
    /* Access to a and b is allowed only through methods. */ 
    ob.setAlpha(-99); 
    ob.setBeta(19); 
    Console.WriteLine("ob.a is " + ob.getAlpha()); 
    Console.WriteLine("ob.b is " + ob.getBeta()); 
 
    // You cannot access a or b like this: 
//  ob.a = 10; // Wrong! a is private! 
//  ob.b = 9;   // Wrong! b is private! 
 
    // It is OK to directly access gamma because it is public. 
    ob.gamma = 99;  
   }  
}