src/main/java/design/model/DataHandler.java


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package design.model;

import java.io.File;
import java.io.IOException;

public interface DataHandler {
    void importPersonalData(File file) throws IOException;
    void exportPersonalData(File file) throws IOException;
    void importLeagueData(File file) throws IOException;
    void exportLeagueData(File file) throws IOException;
}