append button java
import javax.swing.*; import java.awt.*; public class MyFrame { MyFrame() JFrame frame = new JFrame("Title"); frame.setTitle("JFrame title"); // Frame title frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); // Exit out of app frame.setResizable(true); // Prevent frame from being resized, or not frame.setSize(500,500); // Sets x and y frame.setVisible(true); //makes frame visible button = new JButton(); // creates button Border border = BorderFactory.createLineBorder(Color.green, 3); // specifies border button.setBounds(200, 100, 100, 50); // button properties button.setBorder(border); // gives button border button.setText("A nice button"); // button text MyFrame.add(button); //adds button to frame }}