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Jun 4th, 2017
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  1. package Reviseknowledge;
  2. import java.sql.Connection;
  3. import java.sql.DriverManager;
  4. import java.sql.PreparedStatement;
  5. import java.sql.ResultSet;
  6. import java.util.ArrayList;
  7.  
  8. public class Learn {
  9.  
  10. public static void main(String[] args) throws Exception {
  11.  
  12. createTable ();
  13.  
  14.  
  15. }
  16.  
  17.  
  18. public static void createTable () throws Exception {
  19.  
  20. try {
  21.  
  22. Connection con = getConnection ();
  23. java.sql.PreparedStatement create = con.prepareStatement("CREATE TABLE IF NOT EXISTS stebuklas "
  24. + "( first varchar(253), "
  25. + "last varchar(250),"
  26. + "numbers integer(50) )");
  27. create.executeUpdate();
  28.  
  29. }
  30.  
  31. catch(Exception e){ System.out.println(e); }
  32.  
  33. finally { System.out.println ("table was madee"); }
  34.  
  35. }
  36.  
  37.  
  38.  
  39.  
  40.  
  41. /*
  42.  
  43.  
  44. public static void post () throws Exception {
  45.  
  46. String var1 = "ann";
  47. String var2 = "lesh";
  48. double var3 = 5;
  49.  
  50. try {
  51. Connection conn = getConnection ();
  52. PreparedStatement posted = conn.prepareStatement (" INSERT INTO stebuklas "
  53. + "(first,last,numbers) VALUES ('"+var1+"', '"+var2+"', '"+var3+"')");
  54.  
  55. posted.executeUpdate ();
  56. posted.executeUpdate ();
  57.  
  58. }
  59. catch(Exception e){ System.out.println(e); }
  60.  
  61. finally {System.out.println ("values inserted to the table.");}
  62.  
  63.  
  64. }
  65.  
  66.  
  67. */
  68.  
  69. /*
  70. public static void get() throws Exception {
  71. try{
  72. Connection conn = getConnection ();
  73. PreparedStatement statement = conn.prepareStatement("SELECT * FROM stebuklas LIMIT 2");
  74. PreparedStatement stat = conn.prepareStatement("SELECT * FROM stebuklas LIMIT 3");
  75.  
  76. ResultSet result = statement.executeQuery ();
  77. ResultSet res = stat.executeQuery ();
  78.  
  79. while (result.next() ) {
  80.  
  81. System.out.println ( result.getString("first") );
  82.  
  83. }
  84.  
  85.  
  86. while ( res.next() ) {
  87.  
  88. System.out.println ( res.getInt("numbers") );
  89.  
  90. }
  91.  
  92.  
  93. }
  94. catch(Exception e){ System.out.println(e); }
  95.  
  96.  
  97.  
  98. }
  99. */
  100.  
  101. public static Connection getConnection() throws Exception{
  102.  
  103. try{
  104. String driver = "com.mysql.jdbc.Driver";
  105. String url = "jdbc:mysql://localhost:3306/guest";
  106. String username = "root";
  107. String password = "guest123";
  108. Class.forName(driver);
  109. Connection conn = DriverManager.getConnection(url,username,password);
  110. System.out.println("Connected");
  111. return conn;
  112. }
  113. catch(Exception e){
  114. System.out.println(e);
  115. }
  116. return null;
  117. }
  118.  
  119.  
  120. }
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