Minecraft Session Generator

package de.dakeksy.launcher;

import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.net.Proxy;
import java.util.UUID;

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPasswordField;
import javax.swing.JTextArea;
import javax.swing.JTextField;

import com.mojang.authlib.Agent;
import com.mojang.authlib.UserAuthentication;
import com.mojang.authlib.exceptions.AuthenticationException;
import com.mojang.authlib.yggdrasil.YggdrasilAuthenticationService;
import com.mojang.authlib.yggdrasil.YggdrasilUserAuthentication;
import javax.swing.GroupLayout.Alignment;
import javax.swing.GroupLayout;
import javax.swing.LayoutStyle.ComponentPlacement;

public class Launcher extends JFrame implements ActionListener {
	private static final long serialVersionUID = 1L;

	public static UserAuthentication auth = new YggdrasilUserAuthentication(
			new YggdrasilAuthenticationService(Proxy.NO_PROXY, UUID
					.randomUUID().toString()), Agent.MINECRAFT);

	public static JButton btnLogin = new javax.swing.JButton();
	public static JTextField tfUsername = new javax.swing.JTextField();
	public static JPasswordField jpwPasswordField = new javax.swing.JPasswordField();
	public static JLabel lbUsername = new javax.swing.JLabel();
	public static JLabel lbPassword = new javax.swing.JLabel();
	public static JTextArea taTextArea = new javax.swing.JTextArea();

	/**
	 * Creates new form Window
	 */
	public Launcher() {
		initComponents();
	}

	public static void main(String args[]) {
		startIt();
	}

	public void doLogin() {
		String uname = tfUsername.getText();
		String pfield = jpwPasswordField.getText();

//		System.out.println(uname);
//		System.out.println(pfield);
		
		auth.setUsername(uname);
		auth.setPassword(pfield);
		
		try{
			auth.logIn();
		} catch (AuthenticationException e){
			e.printStackTrace();
		}
		
		String playerUUID = auth.getSelectedProfile().getId();
		String accessToken = auth.getAuthenticatedToken();
		String userName = auth.getSelectedProfile().getName();
		
		printInTextArea(playerUUID, accessToken, userName);
		
	}

	public void printInTextArea(String pid, String at, String un){
		taTextArea.setText("playerUUID: " + pid + "\naccessToken: " + at + "\nUsername: " + un);
	}
	
	public void actionPerformed(ActionEvent e) {
		if (e.getSource() == btnLogin) {
			doLogin();
		}
	}

	private void initComponents() {

		setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);

		setLocationRelativeTo(null);

		btnLogin.setText("Login");
		btnLogin.addActionListener(this);

		tfUsername.setText("Username");

		jpwPasswordField.setText("Passwort");

		lbUsername.setText("Username:");

		lbPassword.setText("Passwort:");
		
				taTextArea.setColumns(20);
				taTextArea.setRows(5);
				taTextArea.setEditable(false);

		javax.swing.GroupLayout layout = new javax.swing.GroupLayout(
				getContentPane());
		layout.setHorizontalGroup(
			layout.createParallelGroup(Alignment.LEADING)
				.addGroup(layout.createSequentialGroup()
					.addContainerGap()
					.addGroup(layout.createParallelGroup(Alignment.TRAILING)
						.addGroup(layout.createSequentialGroup()
							.addGroup(layout.createParallelGroup(Alignment.LEADING)
								.addComponent(lbUsername)
								.addComponent(tfUsername, GroupLayout.PREFERRED_SIZE, 124, GroupLayout.PREFERRED_SIZE))
							.addGap(18)
							.addGroup(layout.createParallelGroup(Alignment.LEADING)
								.addGroup(layout.createSequentialGroup()
									.addComponent(jpwPasswordField, GroupLayout.PREFERRED_SIZE, 130, GroupLayout.PREFERRED_SIZE)
									.addPreferredGap(ComponentPlacement.RELATED)
									.addComponent(btnLogin))
								.addComponent(lbPassword)))
						.addComponent(taTextArea, Alignment.LEADING, GroupLayout.PREFERRED_SIZE, 324, GroupLayout.PREFERRED_SIZE))
					.addContainerGap())
		);
		layout.setVerticalGroup(
			layout.createParallelGroup(Alignment.LEADING)
				.addGroup(layout.createSequentialGroup()
					.addContainerGap()
					.addComponent(taTextArea, GroupLayout.PREFERRED_SIZE, 238, GroupLayout.PREFERRED_SIZE)
					.addPreferredGap(ComponentPlacement.RELATED, GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
					.addGroup(layout.createParallelGroup(Alignment.BASELINE)
						.addComponent(lbUsername)
						.addComponent(lbPassword))
					.addPreferredGap(ComponentPlacement.RELATED)
					.addGroup(layout.createParallelGroup(Alignment.BASELINE)
						.addComponent(jpwPasswordField, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE)
						.addComponent(btnLogin)
						.addComponent(tfUsername, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE))
					.addContainerGap())
		);
		getContentPane().setLayout(layout);

		pack();
	}

	public static void startIt() {
		try {
			for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager
					.getInstalledLookAndFeels()) {
				if ("Nimbus".equals(info.getName())) {
					javax.swing.UIManager.setLookAndFeel(info.getClassName());
					break;
				}
			}
		} catch (ClassNotFoundException ex) {
			java.util.logging.Logger.getLogger(Launcher.class.getName()).log(
					java.util.logging.Level.SEVERE, null, ex);
		} catch (InstantiationException ex) {
			java.util.logging.Logger.getLogger(Launcher.class.getName()).log(
					java.util.logging.Level.SEVERE, null, ex);
		} catch (IllegalAccessException ex) {
			java.util.logging.Logger.getLogger(Launcher.class.getName()).log(
					java.util.logging.Level.SEVERE, null, ex);
		} catch (javax.swing.UnsupportedLookAndFeelException ex) {
			java.util.logging.Logger.getLogger(Launcher.class.getName()).log(
					java.util.logging.Level.SEVERE, null, ex);
		}

		java.awt.EventQueue.invokeLater(new Runnable() {
			public void run() {
				new Launcher().setVisible(true);
			}
		});
	}
}