Scope of Local Variables

• Scope of variable: Region of program in which the variable can be accessed
• Scope of a local variable extends from its declaration to end of the block that encloses it
• Sometimes the same variable name is used in two methods:

  public class RectangleTester
  {
     public static double area(Rectangle rect)
     {
        double r = rect.getWidth() * rect.getHeight();
        return r;
     }
     public static void main(String[] args)
     {
        Rectangle r = new Rectangle(5, 10, 20, 30);
        double a = area(r);
        System.out.println(r);
     }
  }

  These variables are independent from each other; their scopes are disjoint