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Jun 19th, 2017
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  1. //import org.h2.Driver;
  2. //import java.sql.*;
  3. import java.sql.Connection;
  4. import java.sql.DriverManager;
  5. import java.sql.Statement;
  6. import java.sql.ResultSet;
  7. import java.sql.SQLException;
  8.  
  9. /**
  10. * Praktikum 5 - (5)
  11. */
  12. public class db2
  13. {
  14. // Instanzvariablen
  15. private int x;
  16. public static void main(String[] args) {
  17. Connection conn = null;
  18.  
  19. try {
  20. // Verbindungsaufbau zur Datenbank
  21. conn = DriverManager.getConnection("jdbc:h2:~/test", "sa", "");
  22.  
  23. // Tabelle erstellen und Daten einfügen
  24. Statement stmt = conn.createStatement();
  25. stmt.execute( "DROP TABLE Users IF EXISTS" );
  26. stmt.execute( "CREATE TABLE Users ( ID INT PRIMARY KEY, Name VARCHAR(255) )" );
  27. stmt.execute( "INSERT INTO Users VALUES( 1, 'Test User' )" );
  28. stmt.execute( "INSERT INTO Users VALUES( 2, 'Test User 2' )" );
  29. stmt.execute( "INSERT INTO Users VALUES( 3, 'Test User 3' )" );
  30.  
  31. // Daten abfragen
  32. ResultSet rs = stmt.executeQuery( "SELECT Name from Users" );
  33. while( rs.next() ) System.out.println( rs.getString( "Name" ) );
  34. }
  35. catch (SQLException e) { e.printStackTrace(); }
  36. finally
  37. {
  38. if( conn != null )
  39. {
  40. try { conn.close(); }
  41. catch (SQLException e) { e.printStackTrace(); }
  42. }
  43. }
  44. }
  45. }
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