Hello guys I'm using FlatLaf library in my java swing code so I'm getting the class no found and classloader error

Question

import java.awt.Dimension;

import javax.swing.JFrame;
import javax.swing.SwingUtilities;

import com.formdev.flatlaf.FlatLightLaf;
import com.formdev.flatlaf.ui.FlatListUI;

public class JFrameBackgroundColor
{

public static void main(String[] args) throws Exception
{
FlatLightLaf.setup();//setting the look and feel
// schedule this for the event dispatch thread (edt)
SwingUtilities.invokeLater(new Runnable()

{
public void run()
{
displayJFrame();
}
});
}

static void displayJFrame()
{

// create our jframe as usual
JFrame jframe=new JFrame();
//UIManager.setLookAndFeel(new FlatLightLaf());
//JFrame.setDefaultLookAndFeelDecorated(true);
jframe.getRootPane().putClientProperty("JRootPane.titleBarBackground", new Color(23,180,252));
jframe.getRootPane().putClientProperty("JRootPane.titleBarForeground", Color.white);
jframe.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
//jframe.getContentPane().setBackground( Color.RED );
// jframe.setBackground(Color.red);

// set the jframe size and location, and make it visible
jframe.setPreferredSize(new Dimension(400, 300));
jframe.pack();
jframe.setLocationRelativeTo(null);
jframe.setVisible(true);

}
}

Answer 1

The library jar should be in your classpath, or in your maven dependencies.

If you are using a particular IDE it probably has some features to help import external libraries to your project.

https://stackoverflow.com/questions/17402009/importing-library-in-java

Answer 2

Acctualy it is in my classpath