import javax.swing.*;

public class testUI {

    public static void main(String [] args){

    JFrame f1=new JFrame();
    JButton b1=new JButton("BEGIN");
    b1.setBounds(230,200,100,40);
    f1.add(b1);
    f1.setSize(400,500);
    f1.setLayout(null);
    f1.setVisible(true);

    }
}