Java Swing Tutorial - Java AbstractAction(String name) Constructor








Syntax

AbstractAction(String name) constructor from AbstractAction has the following syntax.

public AbstractAction(String name)

Example

In the following code shows how to use AbstractAction.AbstractAction(String name) constructor.

import java.awt.BorderLayout;
import java.awt.Component;
import java.awt.Graphics;
import java.awt.event.ActionEvent;
import java.awt.event.InputEvent;
import java.awt.event.KeyEvent;
/*  www .  ja v a 2 s  .  c  o  m*/
import javax.swing.AbstractAction;
import javax.swing.Action;
import javax.swing.Icon;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JMenu;
import javax.swing.JMenuBar;
import javax.swing.JMenuItem;
import javax.swing.KeyStroke;

public class Main {
  public static void main(String args[]) {
    JFrame frame = new JFrame();
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    final Action printAction = new PrintHelloAction();

    JMenuBar menuBar = new JMenuBar();
    JMenu menu = new JMenu("File");
    menuBar.add(menu);
    JMenuItem menuItem = new JMenuItem("Print");
    KeyStroke ctrlP = KeyStroke.getKeyStroke(KeyEvent.VK_P,
        InputEvent.CTRL_MASK);
    menuItem.setAccelerator(ctrlP);
    menuItem.addActionListener(printAction);
    menu.add(menuItem);

    JButton fileButton = new JButton("About");
    fileButton.setMnemonic(KeyEvent.VK_A);
    fileButton.addActionListener(printAction);

    frame.setJMenuBar(menuBar);

    frame.add(fileButton, BorderLayout.SOUTH);
    frame.setSize(300, 100);
    frame.setVisible(true);
  }
}

class PrintHelloAction extends AbstractAction {
  private static final Icon printIcon = new MyIcon();

  PrintHelloAction() {
    super("Print");
    putValue(Action.SHORT_DESCRIPTION, "Hello, World");
  }

  public void actionPerformed(ActionEvent actionEvent) {
    System.out.println("Hello, World");
  }
}

class MyIcon implements Icon {
  public int getIconWidth() {
    return 32;
  }

  public int getIconHeight() {
    return 32;
  }

  public void paintIcon(Component c, Graphics g, int x, int y) {
    g.drawString("java2s.com", 0, 20);
  }
}