new JButton(String text)
import javax.swing.JButton; import javax.swing.JFrame; import javax.swing.JPanel; public class MainClass extends JPanel { public MainClass() { JButton btn1 = new JButton("Button1"); JButton btn2 = new JButton("Button2"); JButton btn3 = new JButton("Button3"); JButton btn4 = new JButton("Button4"); JButton btn5 = new JButton("Button5"); JButton btn6 = new JButton("Button6"); add(btn1); add(btn2); add(btn3); add(btn4); add(btn5); add(btn6); } public static void main(String[] args) { JFrame frame = new JFrame(); frame.getContentPane().add(new MainClass()); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.setSize(200, 200); frame.setVisible(true); } }