Yes, you are able to move mouse pointer with arrow keys in Java globally and that is theme of the below program. With the help of this program, the cursor pointer goes up when UP arrow key is pressed, down when down arrow key is pressed.... and press the mouse when enter is pressed. Isn't that cool? Let us take a look at the example below.
MouseInfo.getPointerInfo().getLocation(): This method is present in the PointerInfo class whose object can be obtained by getPointerInfo() method in the MouseInfo class. getLocation() returns the current mouse pointer location which is helpful in moving the cursor with arrow keys.
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
class MoveCursor extends JFrame
{
Robot r;
public MoveCursor()
{
createAndShowGUI();
}
private void createAndShowGUI()
{
setTitle("Move Cursor with Keyboard");
setDefaultCloseOperation(EXIT_ON_CLOSE);
// hide the visibility
setUndecorated(true);
setOpacity(0f);
setVisible(true);
// Create Robot object
try
{
r=new Robot();
}catch(Exception e){}
addKeyListener(new KeyAdapter(){
public void keyPressed(KeyEvent e)
{
// If there occured an exception
// while creating Robot object, r is null
// then go back
if(r==null) return;
// Get global current cursor location
Point p=MouseInfo.getPointerInfo().getLocation();
switch(e.getKeyCode())
{
case KeyEvent.VK_UP: r.mouseMove(p.x,p.y-1); break;
case KeyEvent.VK_DOWN: r.mouseMove(p.x,p.y+1); break;
case KeyEvent.VK_LEFT: r.mouseMove(p.x-1,p.y); break;
case KeyEvent.VK_RIGHT: r.mouseMove(p.x+1,p.y); break;
// left click
case KeyEvent.VK_ENTER: r.mousePress(MouseEvent.BUTTON1_MASK); r.mouseRelease(MouseEvent.BUTTON1_MASK);
}
}
});
}
public static void main(String args[])
{
new MoveCursor();
}
}
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