Can someone help me fix the errors in my Java code please

UserConnector.java

package userCreation; import java.sql.*; public class UserConnector { private String firstname; private String lastname; private String username; private String password; private String permissions; public boolean Server_Error = false; public void setUserCreationData(String first, String last, String user, String pass){ firstname = first; lastname = last; username = user; password = pass; } public void UserLogData(String user, String pass){ username = user; password = pass; } public void setPermissions(String userPerm){ permissions = userPerm; } public String getPermissions(){ return permissions; } public String getUsername(){ return username; } public boolean UserCheckConnector() { boolean pass = false; Server_Error = false; try { Connection con = DriverManager.getConnection("jdk:mysql://localhost:3306/users", "UserCreator", "password"); Statement myStat = con.createStatement(); ResultSet rs = myStmt.executeQuery("SELECT * FROM app_users WHERE BINARY UserName= '" + username + "';"); while(rs.next()){ if(rs.getString("Username") !=null){ pass = true; } } rs.close(); myStmt.close(); con.close(); } catch (SQLException exc){ System.out.println(exc); Server_Error = true; pass = true; } return pass; } public void UserCreationConnector() { Server_Error = false; try { Connection con = DriverManager.getConnection("jdbc:mysql://localhost:3306/users", "Usercreation", "password"); Statement myStmt = con.createStatement(); myStmt.executeUpdate("INSERT INFO app_users (Username, FirstName, LastName, Pass) VALUES ('" + username + "', " + firstname + "' , '" + lastname + "',MD5('" + password + "'));"); myStmt.close(); con.close(); } catch (SQLException exc) { System.out.println(exc); } } public boolean LoginConnector(){ boolean pass = false; Server_Error = false; try{ Connection con = DriverManager.getConnection("jdbc:mysql://localhost:3306/user", "app_control", "password"); Statement myStmt = con.createStatement(); ResultSet rs = myStmt.executeQuery("SELECT * FROM app_users WHERE BINARY Username= '" + username + "' AND Pass=MD5('"+password+"'"); while ((rs.next())){ if(rs.getString(("Permissions") !=null){ pass=true; setPermissions(rs.getString("Permissions")); } } if(pass){ myStmt.executeUpdate("UPDATE app_users SET LastLogin=NOW() WHERE BINARY UserName= '" +username +"' AND PASS = MD5('"+password+"'"); } con.close(); myStmt.close(); rs.close(); } catch (SQLException exc){ System.out.println(exc); Server_Error = true; } return pass; } } 

Controller.java

package userCreation; import java.io.IOException; import java.net.URL; import java.util.ResourceBundle; import java.util.regex.Matcher; import java.util.regex.Pattern; import javafx.event.ActionEvent; import javafx.fxml.*; import javafx.scene.*; import javafx.scene.control.*; import javafx.scene.text.Text; import javafx.stage.*; public class Controller implements Initializable{ @FXML private PasswordField Password_text; @FXML private PasswordField Confirm_text; @FXML private TextField FirstName_text; @FXML private TextField LastName_text; @FXML private TextField Username_text; public Text UsedUsername_text; public Text ServerError_text; public Text NoMatchPass_text; public Text PatternError_text; public Text SubmitError_text; UserConnector userConnector = new UserConnector(); @FXML private void handleBacktoLog_ButtonAction(ActionEvent event) throws IOException{ System.out.println("Switch to login UI"); Parent newuser_ui = FXMLLoader.load(getClass().getResource("/inv_manager/LoginUIDocument.fxml")); Scene newuser_scene = new Scene(newuser_ui); Stage app_stage = (Stage) ((Node)event.getSource()).getScene().getWindow(); app_stage.setScene(newuser_scene); app_stage.show(); } @FXML private void handleSubmit_ButtonAction(ActionEvent event) throws IOException{ resetErrorMessage(); if(accoutFormCheck()){ if(Password_text.getText().equals(Confirm_text.getText())){ System.out.println("The Password match"); userConnector.setUserCreationData((FirstName_text.getText().substring(0,1).toUpperCase() + FirstName_text.getText().substring(1)) (LastName_text.getText().substring(0,1).toUpperCase() + LastName_text.getText().substring(1)) (UsedUsername_text.getText(), Password_text.getText()) if(!userConnector.UserCheckConnector() || !userConnector.Server_Error){ System.out.println("No matching username was found"); System.out.println("Creating new user now"); userConnector.UserCreationConnector(); }else{ if(userConnector.Server_Error){ ServerError_text.setVisible(true); }else{ System.out.println("A matching username was found"); Username_text.setVisible(true); } } }else { System.out.println("Passwords didn't match"); NoMatchPass_text.setVisible(true); } } else{ System.out.println("Pattern Error"); } } private boolean accoutFormCheck() { boolean pass = true; Pattern userpattern = Pattern.compile("^[a-zA-Z]{1}([a-zA-z0-9.]){4,11}$"); Pattern namepattern = Pattern.compile("^[a-zA-Z]{2,16}$"); Pattern passwordPattern = Pattern.compile("^(?=.*[0-9])(?=.*[a-z)(?=.*[A-Z])(?=.*[!@#$%^&+=])(?=\\S+$).{8,16}$"); Matcher matcher = namepattern.matcher((FirstName_text.getText())); if (!matcher.matches()) { pass = false; System.out.println("Firstname field was blank or didn't match a name pattern"); FirstName_text.setStyle("-fx-text-box-border: red; -fx-focus-color: red"); } else { FirstName_text.setStyle(null); } matcher = namepattern.matcher(LastName_text.getText()); if (!matcher.matches()) { pass = false; System.out.println("Lastname filed was blank or didn't match a name pattern"); LastName_text.setStyle("-fx-text-box-border: red; -fx-focus-color: red;"); } else { LastName_text.setStyle(null); } matcher = userpattern.matcher((Username_text.getText())); if (!matcher.matches()) { pass = false; Username_text.setStyle("-fx-text-box-border: red; -fx-focus-color: red;"); System.out.println("Username field was blank or didn't match a username pattern"); } else { Username_text.setStyle(null); } matcher = passwordPattern.matcher((Password_text.getText())); if (!matcher.matches()) { pass = false; Password_text.setStyle(" -fx-text-box-border: red; -fx-focus-color: red;"); Confirm_text.setStyle("-fx-text-box-border: red; -fx-focus-color: red;"); System.out.println("Password field was blank or didn't match a password pattern"); PatternError_text.setVisible(true); } else { Password_text.setStyle(null); Confirm_text.setStyle(null); } if (!pass) SubmitError_text.setVisible(true); else SubmitError_text.setVisible(false); return pass; } private void resetErrorMessage() { ServerError_text.setVisible(false); NoMatchPass_text.setVisible(false); Username_text.setVisible(false); PatternError_text.setVisible(false); SubmitError_text.setVisible(false); } @Override public void initialize(URL url, ResourceBundle resourceBundle) { } }