Execute script and wait for it to complete

Co-authored-by: sigonasr2 <sigonasr2@gmail.com>

ArcadeReader.java

@@ -97,7 +97,8 @@ abstract class Reader{
     List<Box> readRegions = new ArrayList<>();
     String readAllBoxes() {
         try {
-            Process p = Runtime.getRuntime().exec("cat testBoxes.txt");
+            Process p = Runtime.getRuntime().exec(new String[]{"python3","runocr.py","ja"});
+            while (p.isAlive());
             InputStreamReader result = new InputStreamReader(p.getInputStream());
             StringBuilder sb = new StringBuilder();
             while (result.ready()) {