update: testing and result finding quest

tests/test8.java

@@ -0,0 +1,10 @@
+public class test8 {
+    public static void main(String[] args) {
+        int x = 5;           // Line 3
+        int y = x + 1;       // Line 4
+        x = 10;              // Line 5
+        int z = x * 2;       // Line 6
+        System.out.println(y); // Line 7
+        System.out.println(z); // Line 8
+    }
+}