[Demonstration 1]

[Buggy Method]
public void update(String content) {
    try (Connection con = DB.sql2o.open()) {
        String sql = "UPDATE clients SET info = :info WHERE id=:id";
        con.createQuery(sql).addParameter("info", info).addParameter("id", id).executeUpdate();
    }
}

[Buggy Hunk]
public void update(String content) {

[Patch]
public void update(String info) {

[Demonstration 2]

[Buggy Method]
public static String getLineEntry(String alias, String url) {
    return alias + " " + url + System.lineSeparator();
}

[Buggy Hunk]
return alias + " " + url + System.lineSeparator();

[Patch]
return alias + " " + url;

[Demonstration 3]

[Buggy Method]
@Override
public void addTrackToLocation(Epicodus epicodus, Track track) {
    String query = "INSERT INTO epicodus_students(epicodusId, trackId) VALUES (:epicodusId, :trackId)";
    try (Connection con = sql2o.open()) {
        con.createQuery(query).addParameter("epicodusId", epicodus.getLocationid()).addParameter("trackId", track.getId()).executeUpdate();
    } catch (Sql2oException e) {
        System.out.println(e);
    }
}

[Buggy Hunk]
.addParameter("trackId", track.getId())

[Patch]
.addParameter("trackId", track.getTrackId())