Java invisible cursor

Complete source code below will show you, how to create invisible cursor in java.

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COMPLETE SOURCE CODE FOR : MakeCursorInvisible.java
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import java.awt.Toolkit;
import java.awt.Cursor;
import java.awt.Point;
import java.awt.Image;

import javax.swing.JFrame;

public class MakeCursorInvisible
{
//Create an empty byte array
byte[]imageByte=new byte[0];

Cursor myCursor;
Point myPoint=new Point(0,0);

//Create image for cursor using empty array
Image cursorImage=Toolkit.getDefaultToolkit().createImage(imageByte);

public MakeCursorInvisible()
{
//Create cursor
myCursor=Toolkit.getDefaultToolkit().createCustomCursor(cursorImage,myPoint,"cursor");

JFrame frame=new JFrame("Put your cursor into me");

//Set cursor for JFrame using created cursor(myCursor)
frame.setCursor(myCursor);

frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setSize(300,300);
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}

public static void main(String[]args)
{
MakeCursorInvisible mci=new MakeCursorInvisible();
}
}

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Get current cursor location in JTextArea

Complete source code below will show you, how to get current cursor location in JTextArea.

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COMPLETE SOURCE CODE FOR : GetCurrentCursorLocationInJTextArea.java
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import javax.swing.*;

import java.awt.event.*;

import java.awt.*;

public class GetCurrentCursorLocationInJTextArea extends JTextArea implements MouseMotionListener
{
//Create window using JFrame with title ( Get current cursor location in JTextArea )
JFrame frame=new JFrame("Get current cursor location in JTextArea");

//Create text field that will show you, current cursor location
JTextField textFieldX=new JTextField(5);
JTextField textFieldY=new JTextField(5);

//Create label that will use to describe function for each text field
JLabel labelX=new JLabel("Coordinate X : ");
JLabel labelY=new JLabel("Coordinate Y : ");

//Create panel that will use to store text field and label
JPanel panelX=new JPanel();
JPanel panelY=new JPanel();

//Panel that will use to store panelX and panelY
JPanel container=new JPanel();

public GetCurrentCursorLocationInJTextArea()
{
 //Add mouse motion listener to JTextArea
 addMouseMotionListener(this);

 //Set container layout using BorderLayout
 container.setLayout(new BorderLayout());

 //Set panelX and panelY layout using GridLayout
 panelX.setLayout(new GridLayout(1,2));
 panelY.setLayout(new GridLayout(1,2));

 //Add labelX and textFieldX into panelX
 panelX.add(labelX);
 panelX.add(textFieldX);

 //Add labelY and textFieldY into panelY
 panelY.add(labelY);
 panelY.add(textFieldY);

 //Add panelX and panelY into container
 container.add(panelX,BorderLayout.WEST);
 container.add(panelY,BorderLayout.EAST);

 //Set frame layout using BorderLayout
 frame.setLayout(new BorderLayout());

 //Add JTextArea  into JFrame
 frame.add(this,BorderLayout.CENTER);

 //Add container into JFrame
 frame.add(container,BorderLayout.SOUTH);

 frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
 frame.setSize(500,500);
 frame.setVisible(true);
}

public void mouseMoved(MouseEvent event)
{
 //Get current X-coordinate for cursor
 textFieldX.setText("");
 textFieldX.setText(Integer.toString(event.getX()));

 //Get current Y-coordinate for cursor
 textFieldY.setText("");
 textFieldY.setText(Integer.toString(event.getY()));
}

public void mouseDragged(MouseEvent event)
{
 //Do nothing because our case not handle dragging
}

public static void main(String[]args)
{
 GetCurrentCursorLocationInJTextArea gcclijta=new GetCurrentCursorLocationInJTextArea();
}
}

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Close JFrame when cursor exit from JFrame

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COMPLETE SOURCE CODE FOR : CloseJFrameWhenMouseExit.java
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import javax.swing.JFrame;

import java.awt.event.MouseListener;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;

public class CloseJFrameWhenMouseExit
{
public static void main(String[]args)
{
 //Create mouse listener that will listen when cursor exit JFrame
 MouseListener ml=new MouseAdapter()
 {
  public void mouseExited(MouseEvent event)
  {
   //Put JFrame close code here
   System.exit(0);
  }
 };

 //Create JFrame with title ( GET YOUR CURSOR INTO JFRAME, AFTER THAT MOVE IT AWAY )
 JFrame frame=new JFrame("GET YOUR CURSOR INTO JFRAME, AFTER THAT MOVE IT AWAY");

 //Add mouse listener to JFrame
 frame.addMouseListener(ml);

 //Set default close operation to JFrame
 frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

 //Set JFrame size to :
 //Width : 700 pixels
 //Height : 400 pixels
 frame.setSize(700,400);

 //Make JFrame visible. So we can see it.
 frame.setVisible(true);
}
}

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How to move cursor on screen using java ???

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COMPLETE SOURCE CODE FOR : MovingCursorOnScreen.java
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import java.awt.Robot;

public class MovingCursorOnScreen
{
 public static void main(String[]args)
 {
  try
  {
   int Xcoordinate=10;
   int Ycoordinate=50;
   
   Robot a=new Robot();
   
   //this method will move your cursor to the location base on Xcoordinate and Ycoordinate
   a.mouseMove(Xcoordinate,Ycoordinate);
  }
  catch(Exception exception)
  {
   exception.printStackTrace();
  }
 }
}

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Change cursor for a component

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COMPLETE SOURCE CODE FOR : HowToChangeComponentCursor.java
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import java.awt.Frame;
import java.awt.Component;
import java.awt.Cursor;

import java.awt.event.WindowListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;

public class HowToChangeComponentCursor
{
 public static void main(String[]args)
 {
  WindowListener wl=new WindowAdapter()
  {
   public void windowClosing(WindowEvent evt)
   {
    System.exit(0);
   } 
  };
  
  Frame a=new Frame("HOVER YOUR CURSOR IN THIS FRAME");
  a.addWindowListener(wl);
  
  //METHOD setCursor WILL SET NEW CURSOR FOR COMPONENT
  a.setCursor(Cursor.getPredefinedCursor(Cursor.CROSSHAIR_CURSOR));
  
  a.setSize(800,600);
  a.setVisible(true);
 }
}

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