sample maven test
// modify pom.xml to include junit
import org.junit.Assert;
import org.junit.Test;

@Test
public void test()
{
Rectangle sample = new Rectangle(1,2);
double area = sample.Area();
Assert.assertEquals(area, 2);
}
}
mvn test

interface IMeasurable
{
double Area() throws illegalAccessException();
}
abstract class shape implements IMeasurable
{
volatile double x;
volatile double y;
shape (double a, double b)
{
x = a;
y = b;
}
double Area() throws illegalAccessException();
{
throw new illegalAccessException();
}
}
class Rectangle extends shape
{
Rectangle (double x, double y)
{
super(x,y);
}
final void PrintMe()
{
System.Out.PrintLn("I'm a rectangle with length : " +  X +  "and breadth :" + Y + "and Area :" Area());
}
double Area() throws illegalAccessException()
{
return x*y;
}
}