Java FileNotFoundException: 'config.properties' - Troubleshooting Guide

The error message 'java.io.FileNotFoundException: config.properties (No such file or directory)' indicates that your Java program cannot locate the file 'config.properties' in the specified directory. This issue can arise due to several reasons:

1. File Doesn't Exist: The most straightforward reason is that the 'config.properties' file is simply not present in the expected directory.

2. Incorrect Path: The program might be searching for the file in the wrong location. Double-check that the path provided in your code accurately points to the directory containing 'config.properties'.

3. Case Sensitivity: File systems can be case-sensitive. Ensure that the filename ('config.properties') and the directory path match the actual case used on your system.

Troubleshooting Steps:

1. Verify File Existence: Use your file explorer or command line to confirm that 'config.properties' exists in the directory specified in your code.

2. Check Path: Carefully examine the path you're using in your Java program. Make sure it's accurate and reflects the actual file location.

3. Consider Case: If working on a case-sensitive operating system, pay close attention to the capitalization of the filename and directory path.

4. Print Path: Add a line of code to print the path being used to locate 'config.properties'. This helps ensure that the path is correct and points to the expected location.

5. Relocation: If you need to change the location of 'config.properties', update the file path in your code accordingly.

By following these steps, you can efficiently pinpoint and resolve the cause of the FileNotFoundException, enabling your Java program to find the necessary 'config.properties' file.