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About Byron Kiourtzoglou

Byron Kiourtzoglou
Byron is a master software engineer working in the IT and Telecom domains. He is an applications developer in a wide variety of applications/services. He is currently acting as the team leader and technical architect for a proprietary service creation and integration platform for both the IT and Telecom industries in addition to a in-house big data real-time analytics solution. He is always fascinated by SOA, middleware services and mobile development. Byron is co-founder and Executive Editor at Java Code Geeks.

Changing cursor shape when hovering over components

In this example we are going to see how to change the shape of the cursor when hovering over components. This will create an impressive and practical graphic for your application, which will notify the users that they are pointing to an object with some certain functionality.

In short, all you have to do in order to change the cursor shape when hovering over components is:

  • Create a new Frame an a new Panel.
  • Create a number of components like Buttons.
  • Use button.setCursor(Cursor.getPredefinedCursor(Cursor.HAND_CURSOR)) to set the hand cursor when hovering this element.
  • Use button.setCursor(Cursor.getPredefinedCursor(Cursor.WAIT_CURSOR)) to set the waiting cursor when hovering this element.

Let’s see the code snippet that follows:

package com.javacodegeeks.snippets.desktop;

import java.awt.BorderLayout;
import java.awt.Button;
import java.awt.Component;
import java.awt.Cursor;
import java.awt.Frame;
import java.awt.Panel;
import java.awt.TextArea;

public class ComponentCursorExample {

  public static void main(String[] args) {

    // Create a frame
    Frame frame = new Frame("Example Frame");

    /**
     * Create a container with a flow layout, which arranges its children 
     * horizontally and center aligned.
     * A container can also be created with a specific layout using
     * Panel(LayoutManager) constructor, e.g.
     * Panel(new FlowLayout(FlowLayout.RIGHT)) for right alignment
     */

    Panel panel = new Panel();

    Button buttonA = new Button("Button_A");
    Button buttonB = new Button("Button_B");
    Button buttonC = new Button("Button_C");

    // By default, the component's cursor is Cursor.DEFAULT_CURSOR
    // Change the buttons cursor to another shape
    buttonB.setCursor(Cursor.getPredefinedCursor(Cursor.HAND_CURSOR));
    buttonC.setCursor(Cursor.getPredefinedCursor(Cursor.WAIT_CURSOR));

    // Add several buttons to the container
    panel.add(buttonA);
    panel.add(buttonB);
    panel.add(buttonC);

    // Add a text area in the center of the frame
    Component textArea = new TextArea("This is a sample text...");
    frame.add(textArea, BorderLayout.CENTER);

    // Add the container to the bottom of the frame
    frame.add(panel, BorderLayout.SOUTH);

    // Display the frame
    int frameWidth = 300;
    int frameHeight = 300;
    frame.setSize(frameWidth, frameHeight);

    frame.setVisible(true);

  }

}

 
This was an example on how to change cursor shape when hovering over components.

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