Java Swing Tutorial - Java InputMap.keys()

Syntax

InputMap.keys() has the following syntax.

public KeyStroke [] keys()

Example

In the following code shows how to use InputMap.keys() method.

import javax.swing.InputMap;
import javax.swing.JButton;
import javax.swing.JComponent;
import javax.swing.KeyStroke;
/* w  ww .j  a v  a  2s.c o  m*/
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);

    System.out.println(inputMap.keys().length);
    
  }
}