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Dec 15th, 2017
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Java 2.34 KB | None | 0 0
  1. package datenbank2;
  2.  
  3. import java.util.*;
  4. import java.sql.*;
  5.  
  6. public class Datenbank2{
  7.    
  8. //Von: Christian Berggold
  9. //Klasse: 12Bfi_18
  10.    
  11. public static void main(String[] args)
  12.     throws SQLException {
  13.     Scanner sc = new Scanner(System.in);
  14.     Scanner s = new Scanner(System.in);
  15.     int eingabe;
  16.                
  17. System.out.println("Bitte eine gueltige Zahl eingeben, um auf einer der Datenbanken zuzugreifen:\n"
  18.     + "1 fuer Datenbank ,,Schulpersonal'' \n"
  19.     + "2 fuer Datenbank ,,Notizen'' \n");
  20.         eingabe = s.nextInt();
  21.  
  22. if (eingabe == 1)
  23. {
  24.  
  25. System.out.println("\nBitte eine gueltige Zahl eingeben:\n"
  26.     + "1 fuer das Auslesen von Datensaetzen\n");
  27.         eingabe = s.nextInt();
  28.  
  29. try {
  30. Class.forName("com.mysql.jdbc.Driver").newInstance();
  31.     Connection con = DriverManager.getConnection(
  32.     "jdbc:mysql://localhost/schulpersonal","root","");
  33.     con.setReadOnly(true);
  34.         Statement stmt = con.createStatement();
  35.     ResultSet rs = stmt.executeQuery("Select * from schulpersonal");
  36.        
  37. while (rs.next())
  38. {
  39. System.out.println( + rs.getInt(1) + "\t" + rs.getString(2) + "\t\t" + rs.getString(3)
  40.         + "\t\t" + rs.getString(4) + "\t\t" + rs.getString(5));
  41. }
  42.    
  43.     rs.close();
  44.     stmt.close();
  45.     con.close();
  46. }
  47. catch (ClassNotFoundException | IllegalAccessException | InstantiationException | SQLException e)
  48. {   System.out.println("Fehler " + e);
  49. }
  50.  
  51. }
  52.    
  53. else if (eingabe == 2) {
  54.  
  55. System.out.println("\nBitte eine gueltige Zahl eingeben:\n"
  56.     + "1 fuer das Auslesen von Datensaetzen\n");
  57.         eingabe = s.nextInt();
  58.  
  59. try {
  60. Class.forName("com.mysql.jdbc.Driver").newInstance();
  61.  
  62.     Connection con = DriverManager.getConnection(
  63.     "jdbc:mysql://localhost/notizen","root","");
  64.     con.setReadOnly(true);
  65.         Statement stmt = con.createStatement();
  66.     ResultSet rs = stmt.executeQuery("Select * from notiz");    
  67.  
  68. while (rs.next())
  69. {
  70. System.out.println( + rs.getInt(1) + "\t" + rs.getString(2) + "\t\t" + rs.getString(3)
  71.         + "\t\t" + rs.getString(4) + "\t\t" + rs.getString(5));
  72. }
  73.    
  74.     rs.close();
  75.     stmt.close();
  76.     con.close();
  77. }
  78. catch (ClassNotFoundException | IllegalAccessException | InstantiationException | SQLException e)
  79. {   System.out.println("Fehler " + e);
  80. }
  81.  
  82. }
  83.  
  84. else if (eingabe != 1 || eingabe != 2) {
  85.     System.out.println("Fehler");
  86. }
  87. }
  88. }
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