Runtime Exec

How command injection happens in Java Runtime.exec() and how to fix it

A critical command injection vulnerability was discovered in `page-object/src/main/java/com/iluwatar/pageobject/App.java` where `Runtime.getRuntime().exec()` was used to launch a file using `cmd.exe` with a directly concatenated file path. An attacker who could control the `applicationFile` variable could inject shell metacharacters to execute arbitrary system commands with the privileges of the running Java process. The fix replaces the unsafe `exec()` call with a properly tokenized `ProcessBui