Data update

Task/Function-prototype/Java/function-prototype.java

@@ -0,0 +1,55 @@
+public final class FunctionPrototype {
+	
+	public static void main(String[] aArgs) {
+		Rectangle rectangle = new Rectangle(10.0, 20.0);
+		System.out.println("Area = " + rectangle.area());
+		
+		Calculator calculator = new Calculator();
+		System.out.println("Sum = " + calculator.sum(2, 2));
+		calculator.version();
+	}	
+
+	private static class Rectangle implements Shape {
+		
+		public Rectangle(double aWidth, double aLength) {
+			width = aWidth; length = aLength;
+		}
+		
+		@Override
+	    public double area() {
+	        return length * width;
+	    }		
+		
+		private final double width, length;
+	
+	}	
+	
+	private static class Calculator extends Arithmetic {
+		
+		public Calculator() {
+			// Statements to create the graphical
+			// representation of the calculator
+		}
+		
+		@Override
+		public int sum(int aOne, int aTwo) {
+			return aOne + aTwo;
+		}
+		
+		@Override
+		public void version() {
+			System.out.println("0.0.1");
+		}
+		
+	}	
+
+}
+
+interface Shape {
+    public double area();
+}	
+
+abstract class Arithmetic {
+	public abstract int sum(int aOne, int aTwo);
+	public abstract void version();		
+}