diff --git a/test/javFiles/Matrix.jav b/test/javFiles/Matrix.jav
index aa8966c9..a680370f 100644
--- a/test/javFiles/Matrix.jav
+++ b/test/javFiles/Matrix.jav
@@ -3,24 +3,27 @@ import java.lang.Integer;
 import java.lang.Boolean;
 
 class Matrix extends Vector<Vector<Integer>> {
+	Integer mul1(Integer x, Integer y) { return x;}
+	Integer add1(Integer x, Integer y) { return x;}
     mul(m) {
         var ret = new Matrix();
         var i = 0;
-        //while(i < size()) {
+        while(i < size()) {
             var v1 = this.elementAt(i);
-            //var v2 = new Vector<Integer>();
-            //var j = 0;
-            //while(j < v1.size()) {
-                //var erg = 0;
-                //var k = 0;
-                //while(k < v1.size()) {
-                    //erg = erg + v1.elementAt(k)
-                    //         * m.elementAt(k).elementAt(j);
-                    //k++; }
-                //v2.addElement(new Integer(erg));
-                //j++; }
-            //ret.addElement(v2);
-            //i++; }
+            var v2 = new Vector<Integer>();
+            var j = 0;
+            while(j < v1.size()) {
+                var erg = 0;
+                var k = 0;
+                while(k < v1.size()) {
+                		//erg = erg + v1.elementAt(k) * m.elementAt(k).elementAt(j);
+                    erg = add1(erg, mul1(v1.elementAt(k),
+                             m.elementAt(k).elementAt(j)));
+                    k++; }
+                v2.addElement(new Integer(erg));
+                j++; }
+            ret.addElement(v2);
+            i++; }
         return ret;
     }
 }