The following class can be used to load a resource from the classpath and also receive a fitting error message in case there's a problem with the given filePath.
import java.io.InputStream;
import java.nio.file.NoSuchFileException;
public class ResourceLoader
{
private String filePath;
public ResourceLoader(String filePath)
{
this.filePath = filePath;
if(filePath.startsWith("/"))
{
throw new IllegalArgumentException("Relative paths may not have a leading slash!");
}
}
public InputStream getResource() throws NoSuchFileException
{
ClassLoader classLoader = this.getClass().getClassLoader();
InputStream inputStream = classLoader.getResourceAsStream(filePath);
if(inputStream == null)
{
throw new NoSuchFileException("Resource file not found. Note that the current directory is the source folder!");
}
return inputStream;
}
}