AbstractButton.setSelected(boolean b) has the following syntax.
public void setSelected(boolean b)
In the following code shows how to use AbstractButton.setSelected(boolean b) method.
/*from w w w .j ava2 s . c om*/ import javax.swing.AbstractButton; import javax.swing.JFrame; import javax.swing.JToggleButton; public class Main { public static void main(String[] args) { AbstractButton jb = new JToggleButton("Press Me"); jb.setSelected(true); JFrame f = new JFrame(); f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); f.getContentPane().add(jb); f.pack(); f.setVisible(true); } }