AbstractButton.setMnemonic(int mnemonic) has the following syntax.
public void setMnemonic(int mnemonic)
In the following code shows how to use AbstractButton.setMnemonic(int mnemonic) method.
//from w w w. ja v a 2 s . c o m 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.setMnemonic((int)'P'); JFrame f = new JFrame(); f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); f.getContentPane().add(jb); f.pack(); f.setVisible(true); } }