The canExecute() method tests if application can execute provided file. You shouldn't be relying on this method. Sometimes it will return true even though the file does not have permissions to execute, also JVM could be started with special privileges that allow it to execute files not marked executable.
2. Method signature
- method does not take any parameter
- true - if file is executeable and application can execute it
- SecurityException - application does not have permission to the file
3.1. Check if file
/tmp/script.sh can be executed
The output in a scenario when
script.sh is executable in OS (used
chmod +x filename to allow executable permissions):
In this article, we showcased how we could use
File.canExecute() method to check if the given file can be executed by the application. Note that you shouldn't trust 100% of what this method returns, because specific parameters of a virtual Java machine will make applications able to execute a file that is not marked as executable.