1 files changed, 31 insertions, 0 deletions
diff --git a/src/jcgp/function/Multiplication.java b/src/jcgp/function/Multiplication.java
new file mode 100644
index 0000000..986faa8
--- /dev/null
+++ b/src/jcgp/function/Multiplication.java
@@ -0,0 +1,31 @@
+package jcgp.function;
+
+import jcgp.exceptions.InvalidArgumentsException;
+import jcgp.population.Connection;
+
+public class Multiplication extends Function {
+
+	private int arity = 2;
+
+	@Override
+	public Object run(Connection... connections) {
+		if (connections.length < arity) {
+			throw new InvalidArgumentsException("Not enough connections were given.");
+		} else if (connections[0].getValue() instanceof Integer) {
+			Integer arg1 = ((Integer) connections[0].getValue());
+			Integer arg2 = ((Integer) connections[1].getValue());
+			Integer result = arg1 * arg2;
+			
+			System.out.println(arg1 + " * " + arg2 + " = " + result);
+			return result;
+		} else {
+			throw new InvalidArgumentsException("Wrong data type, this function takes Integer.");
+		}
+	}
+
+	@Override
+	public int getArity() {
+		return arity;
+	}
+
+}