Kod jest bardzo prosty i mam nadzieję że zrozumiały ale jeśli ktoś go dopracuje to proszę o kontakt [email protected]. Dobra to kod:

try {
		UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
		System.out.println(UIManager.getSystemLookAndFeelClassName());
		SwingUtilities.updateComponentTreeUI(to jest aby odświeżyć komponent napisz tu nazwę komponentu);
			} catch (ClassNotFoundException e) {
		
		e.printStackTrace();
	} catch (InstantiationException e) {
		
		e.printStackTrace();
	} catch (IllegalAccessException e) {
		
		e.printStackTrace();
	} catch (UnsupportedLookAndFeelException e) {
		
		e.printStackTrace();
	}

A tu jest prosty przykład:

import java.awt.Color;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import java.awt.geom.Area;
import java.util.Scanner;

import javax.swing.JApplet;
import javax.swing.JButton;
import javax.swing.JColorChooser;
import javax.swing.JComboBox;
import javax.swing.JEditorPane;
import javax.swing.JFileChooser;
import javax.swing.JFrame;
import javax.swing.JInternalFrame.JDesktopIcon;
import javax.swing.JLabel;
import javax.swing.JLayer;
import javax.swing.JList;
import javax.swing.JMenu;
import javax.swing.JMenuBar;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JPasswordField;
import javax.swing.JRadioButton;
import javax.swing.JTextArea;
import javax.swing.JTextField;
import javax.swing.JWindow;
import javax.swing.SwingUtilities;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;


public class tester {
	static JRadioButton jrb1 = new JRadioButton("test");
	static JFrame F=new JFrame("Test");
	static JPanel P=new JPanel();
	static JColorChooser C=new JColorChooser();
	
	static JTextField area=new JTextField(4);
	
	static JButton button1=new JButton("Code");
	static JTextArea jta = new JTextArea(5,5);
	static JTextField jtf = new JTextField(5);
	static JComboBox jcb = new JComboBox();
	static JMenuBar jmb = new JMenuBar();
	static JMenu jm1 = new JMenu("Test");
	static JLabel enemy=new JLabel();
	
	
	public static void main(String args[]) {

    F.setSize(1024, 200);
    F.setDefaultCloseOperation(3);
    try {
		Thread.sleep(1);
		
	} catch (InterruptedException e) {
		// TODO Auto-generated catch block
		e.printStackTrace();
	}
    F.setVisible(true);
    F.add(P);
    P.setBackground(Color.magenta);
    try {
		UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
		System.out.println(UIManager.getSystemLookAndFeelClassName());
		SwingUtilities.updateComponentTreeUI(button1);
		SwingUtilities.updateComponentTreeUI(jrb1);
		SwingUtilities.updateComponentTreeUI(C);
		SwingUtilities.updateComponentTreeUI(jta);
		SwingUtilities.updateComponentTreeUI(jtf);
		SwingUtilities.updateComponentTreeUI(jcb);
		SwingUtilities.updateComponentTreeUI(jmb);
		SwingUtilities.updateComponentTreeUI(jm1);
		
		
	} catch (ClassNotFoundException e) {
		
		e.printStackTrace();
	} catch (InstantiationException e) {
		
		e.printStackTrace();
	} catch (IllegalAccessException e) {
		
		e.printStackTrace();
	} catch (UnsupportedLookAndFeelException e) {
				e.printStackTrace();
	}
	jmb.add(jm1);
	F.setJMenuBar(jmb);
    P.add(button1);
    P.add(C);
    P.add(jrb1);
    P.add(jta);
    P.add(jtf);
    P.add(jcb);
    


		
	}
}

Ten oto kod nie tylko działa na windowsie ale na wszystkich systemach obsługujących jave