Recientemente cambié a intellij pero me resulta difícil conectarme a mi localDB. El mismo código funcionó bien en eclipse.Además, ya he agregado sqljdbc42.jar como una dependencia del módulo.

package com.enter;
import java.sql.*;

public class SqlConnect {
    private String username, password, url;
    public Connection conn;

    public SqlConnect() {
        username = "user=admin;";
        password = "password=admin";
        url = "jdbc:sqlserver://Bossman-PC\\SQL2014TRAINING;databaseName=EnterDB;";
        Connect();
    }
    public SqlConnect(String user, String pass) {
        username = user;
        password = pass;
        url = "jdbc:sqlserver://Bossman-PC\\SQL2014TRAINING;databaseName=EnterDB;";
        Connect();
    }

    public void Connect() { //Loads sql driver and creates a connection object with local database
        try {
            Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver");
            String connectionUrl = url + username + password;
            conn = DriverManager.getConnection(connectionUrl);
            System.out.println("Connected.");
        } catch(Exception e) {
            e.printStackTrace();
        }
    }

    public Connection getConnection() {
        return conn;
    }


}

Error producido:

Exception in thread "main" java.lang.NoClassDefFoundError: javax/xml/bind/DatatypeConverter
at com.microsoft.sqlserver.jdbc.SQLServerConnection.sendLogon(SQLServerConnection.java:4098)
at com.microsoft.sqlserver.jdbc.SQLServerConnection.logon(SQLServerConnection.java:3160)
at com.microsoft.sqlserver.jdbc.SQLServerConnection.access$100(SQLServerConnection.java:43)
at com.microsoft.sqlserver.jdbc.SQLServerConnection$LogonCommand.doExecute(SQLServerConnection.java:3123)
at com.microsoft.sqlserver.jdbc.TDSCommand.execute(IOBuffer.java:7505)
at com.mi,crosoft.sqlserver.jdbc.SQLServerConnection.executeCommand(SQLServerConnection.java:2445)
at com.microsoft.sqlserver.jdbc.SQLServerConnection.connectHelper(SQLServerConnection.java:1981)
at com.microsoft.sqlserver.jdbc.SQLServerConnection.login(SQLServerConnection.java:1628)
at com.microsoft.sqlserver.jdbc.SQLServerConnection.connectInternal(SQLServerConnection.java:1459)
at com.microsoft.sqlserver.jdbc.SQLServerConnection.connect(SQLServerConnection.java:773)
at com.microsoft.sqlserver.jdbc.SQLServerDriver.connect(SQLServerDriver.java:1168)
at java.sql/java.sql.DriverManager.getConnection(DriverManager.java:678)
at java.sql/java.sql.DriverManager.getConnection(DriverManager.java:252)
at com.enter.SqlConnect.Connect(SqlConnect.java:25)
at com.enter.SqlConnect.<init>(SqlConnect.java:12)
at com.enter.Login.makeConnection(Login.java:26)
at com.enter.Login.<init>(Login.java:16)
at com.enter.Execute.initLogin(Execute.java:14)
at com.enter.Execute.main(Execute.java:9)
Caused by: java.lang.ClassNotFoundException: javax.xml.bind.DatatypeConverter
    at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:582)
    at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:185)
    at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:496)
... 19 more

Process finished with exit code 1

Cualquier ayuda sería muy apreciada. También probé el método sobrecargado DriverManager.getConnection (url, user, pass) y el mismo error.