Factory Pattern ~ A Modern Approach - 4 (FileReader)

CsvReader.java

@Service
public class CsvReader extends FileReader {

    public CsvReader(){
        super(FileType.CSV);
    }

    @Override
    public void readFile(String filePath) {
        System.out.println(String.format("CsvReader --> Reading file: %s", filePath));
    }
}

ExcelReader.java

@Service
public class ExcelReader extends FileReader{

    public ExcelReader() {
        super(FileType.EXCEL);
    }

    @Override
    public void readFile(String filePath) {
        System.out.println(String.format("ExcelReader --> Reading file: %s", filePath));
    }
}

FileReader.java

public abstract class FileReader {
    private FileType supportedFileType;

    FileReader(FileType supportedFileType){
        this.supportedFileType = supportedFileType;
    }

    public FileType getSupportedFileType(){
        return supportedFileType;
    }

    public abstract void readFile(String filePath);
}

PdfReader.java

@Service
public class PdfReader extends FileReader{
    public PdfReader() {
        super(FileType.PDF);
    }

    @Override
    public void readFile(String filePath) {
        System.out.println(String.format("PdfReader --> Reading file: %s", filePath));
    }
}