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Java Hibernate Basics Data Persistence & ORMs Using JDBC to Connect to a Database

Posted by Unsubscribed User
Unsubscribed User
48,988 Points

No idea whats wrong ?

Class.forName("org.sqlite.JDBC");
try(Connection c = DriverManager.getConnection("jdbc:sqlite:treehouse.db")) {
      Statement statement = Connection.createStatement();
      statement.executeUpdate("DROP TABLE IF EXISTS languages");
      statement.executeUpdate("CREATE TABLE languages (id INTEGER PRIMARY KEY)");
      statement.executeUpdate("INSERT INTO languages(id)VALUES(2, "Java")");
} catch(SQLException ex) {
   System.err.printf("There was a database error: %s%n",ex.getMessage()); 
}

1 Answer

Kourosh Raeen
Kourosh Raeen
23,733 Points
Kourosh Raeen
Kourosh Raeen
23,733 Points

You need to call createStatement() on c, not on Connection. Also, when creating the table you forgot about the name column. And there was a similar issue when inserting:

// Load class "org.sqlite.JDBC"
Class.forName("org.sqlite.JDBC");
// Establish connection to database named "treehouse.db"
try(Connection c = DriverManager.getConnection("jdbc:sqlite:treehouse.db")) {
  Statement statement = c.createStatement();
  statement.executeUpdate("DROP TABLE IF EXISTS languages");
  statement.executeUpdate("CREATE TABLE languages (id INTEGER PRIMARY KEY, name STRING)");
  statement.executeUpdate("INSERT INTO languages (id,name) VALUES(2, 'Java')");
} catch(SQLException ex) {

}
Unsubscribed User
Unsubscribed User
48,988 Points

got it thanks. was a bit too fast asking :-)