update: testing and result finding quest

tests/test3.java

@@ -0,0 +1,10 @@
+public class test3 {
+    public static void main(String[] args) {
+        int sum = 0;         // Line 3
+        int i;               // Line 4
+        for (i = 0; i < 5; i++) {  // Line 5
+            sum = sum + i;   // Line 6
+        }
+        System.out.println(sum); // Line 8
+    }
+}