XLS Resources Not Loaded After Created Executable JAR For Project

I have one Project -"A".Inside of that I use, .XLS to read data.

Structure - A/src/TestData
Inside of the TesetData - I have placed XLS files.

I have main method in TestDriver class.If I run this in Eclipse, running fine.But after exported to executable/runnable Jar, and ran via command line (command - jar -jar myjar.jar), I see issue: "Exception in thread "main" java.io.FileNotFoundException: srcTestDataTestCaseController.xls"

public static void main(String[] args)
throws Exception
{
ResultSet rs;
rs = readExcelData(testControllerName, sheetName, "");
}

As I use main() method which is static, I am getting error if I write like the below:

public void getXls(){
String testControllerName ="TestCaseController.xls"
TestDriver.getClass().getClassLoader().getResource (testControllerName);
}

How to read/access the XLS, after I exported as runnable jar