update: testing and result finding quest

tests/test7.java

@@ -0,0 +1,11 @@
+public class test7 {
+    public static void main(String[] args) {
+        int count = 0;       // Line 3
+        int sum = 0;         // Line 4
+        while (count < 5) {  // Line 5
+            sum = sum + count; // Line 6
+            count = count + 1; // Line 7
+        }
+        System.out.println(sum); // Line 9
+    }
+}