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From: Cecil Westerhof <Cecil@decebal.nl>
Newsgroups: comp.lang.java.programmer
Subject: Is this a correct implementation of an abstract class and implementation class
Date: Sat, 12 Aug 2017 23:20:46 +0200
Organization: Decebal Computing
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I want to write a layer around JDBC. For this I have an abstract class
SQL in which I have the following constructor and abstract methods:
    // ################ constructors
    public SQL (String database) throws SQLException {
        String forName   = getForName();
        String sqlDriver = getSQLDriver();

        try {
            Class.forName(forName);
        } catch (ClassNotFoundException e) {
            throw new SQLException("Could not find the class " + forName + ".");
        }
        conn = DriverManager.getConnection(sqlDriver + database);
        this.database = database;
    }

    // ################ abstract
    abstract String getForName();
    abstract String getSQLDriver();


I have also an implementation class SQLite3 in which I have:
    // ################ constructors
    public SQLite3 (String database) throws SQLException {
        super(database);
    }

    // ################ default
    @Override
    String getForName() {
        return "org.sqlite.JDBC";
    }

    @Override
    String getSQLDriver() {
        return "jdbc:sqlite:";
    }

Is this the correct way to do this, or is there a better way?

-- 
Cecil Westerhof
Senior Software Engineer
LinkedIn: http://www.linkedin.com/in/cecilwesterhof