JButton is a push button or a command button.
Constructors of the JButton Class
Constructor Description JButton() Creates a JButton without any label or icon. JButton(String text) Creates a JButton and sets the specified text as its label. JButton(Icon icon) Creates a JButton with an icon and no label. JButton(String text, Icon icon) Creates a JButton with the specified label and icon. JButton(Action action) Creates a JButton with an Action object.
To create a JButton with its text:
JButton closeButton = new JButton("Close");