import javax.swing.InputMap;
import javax.swing.JButton;
import javax.swing.JComponent;
import javax.swing.KeyStroke;
public class Main {
public static void main(String[] argv) throws Exception {
InputMap inputMap = new InputMap();
inputMap.put(KeyStroke.getKeyStroke("F2"), "actionName");
JButton component = new JButton("button");
inputMap.setParent(component.getInputMap(JComponent.WHEN_FOCUSED));
component.setInputMap(JComponent.WHEN_FOCUSED, inputMap);
}
}