get user input from keyborad

[pronetin]

I want to create some short-cuts for my system. For example:

If user press Ctrl+B and active windows on screen is not browser(for example user is in MyDocument folder or Home directory), browser will open.

For doing it, I need to read keyboard input always and check it for short-cuts.

How can i read keyboard input?

[RamyaSivakanth]

Go for Scanner and see the below doc
Scanner (Java 2 Platform SE 5.0)

[pronetin]

Scanner couldn't do that.
I don't want to read System.in or Standard Input. I want to read keys that user enters via Keyboard.

[RamyaSivakanth]

then go with KeyListener and associated events

[pronetin]

RamyaSivakanth, you don't understand my intention.
KeyListener is not practical.

I should can read keyboard IO and work with keyboard API.

All java programmer, Is it possible?

[cselic]

Try with "Actions":

How to Use Actions (The Java™ Tutorials > Creating a GUI With JFC/Swing > Using Other Swing Features)

[cselic]

I have written small program.
In this program you can change Panel color to blue on two ways:
1. Click on the ToolBar's button
2. Press CTRL + B

import java.awt.BorderLayout;
import java.awt.Color;

import java.awt.event.ActionEvent;

import javax.swing.Action;
import javax.swing.AbstractAction;
import javax.swing.ActionMap;
import javax.swing.ImageIcon;
import javax.swing.InputMap;
import javax.swing.JButton;
import javax.swing.JComponent;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.KeyStroke;
import javax.swing.SwingUtilities;

import javax.swing.JToolBar;

public class ActionsExample {
	public static void main(String[] args) {
		SwingUtilities.invokeLater(new Runnable() {
			
			@Override
			public void run() {
				ActionFrame frame = new ActionFrame();
				frame.showUI();
			}
		});
	}
}

class ActionFrame extends JFrame {
	private static final long serialVersionUID = 1L;
	ActionPanel panel;
	public ActionFrame() {
		panel = new ActionPanel();
		add(panel);
	}
	
	public void showUI() {
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		setSize(300,300);
		setVisible(true);
	}
}

class ActionPanel extends JPanel {
	private static final long serialVersionUID = 1L;

	Action colorAction;
	JButton colorButton;
	JToolBar colorToolBar;
	
	public ActionPanel() {
		colorAction = new ColorAction("Color Action", null, "Change color", Color.BLUE);

		colorButton = new JButton("Color Button");
		colorButton.addActionListener(colorAction);
		
		colorToolBar = new JToolBar();
		colorToolBar.add(colorButton);

		add(colorToolBar, BorderLayout.PAGE_START);
		
	     InputMap imap = getInputMap(JComponent.WHEN_ANCESTOR_OF_FOCUSED_COMPONENT);
	     
	     imap.put(KeyStroke.getKeyStroke("ctrl B"),"set Panel color: Blue");
	     ActionMap amap = getActionMap();
	     amap.put("set Panel color: Blue", colorAction);

	}

class ColorAction extends AbstractAction {
	private static final long serialVersionUID = 1L;

	public ColorAction(String text, ImageIcon icon,
            String desc, Color color) {
		super(text, icon);
		putValue(SHORT_DESCRIPTION, desc);
		putValue("color", color);
	}

	@Override
	public void actionPerformed(ActionEvent arg0) {
		Color color = (Color)getValue("color");
		setBackground(color);
	}
}
}