Cursor class is a part of Java AWT package and it is used to create custom cursors or inherit system or predefined cursors.
Cursor class is mainly used to encapsulate the bitmap representation of the mouse cursor.
Constructor of cursor class are :
- Cursor(int t) : Creates a cursor with specified class
- Cursor(String name) : Creates a custom cursor with specified name.
Commonly used methods
| method | explanation |
|---|---|
| getDefaultCursor() | return the system default cursor. |
| getName() | returns the name of this cursor. |
| getPredefinedCursor(int t) | returns a cursor object with the specified predefined type. |
| getSystemCustomCursor(String n) | returns a system-specific custom cursor object matching the specified name. |
| getType() | returns the type for this cursor |
| toString() | returns a string representation of this cursor. |
| createCustomCursor(Image i, Point p, String name) | create a custom cursor with a image and name specified . |
1. Program to apply some predefined and system cursors to components (label)
// Java Program to apply some predefined and system cursors to components (label)import java.awt.*;import javax.swing.*;class cursor extends JFrame { // frame static JFrame f; // label static Label l, l1, l2; // default constructor cursor() { } // main class public static void main(String args[]) { try { // create a frame f = new JFrame("cursor"); // create e panel JPanel p = new JPanel(); // create labels l = new Label("label one"); l1 = new Label("label two"); l2 = new Label("label three"); // create cursors Cursor c = new Cursor(CROSSHAIR_CURSOR); Cursor c1 = new Cursor(HAND_CURSOR); // get System cursor Cursor c2 = Cursor.getSystemCustomCursor("Invalid.32x32"); // set cursor l.setCursor(c); l1.setCursor(c1); l2.setCursor(c2); // add labels to panel p.add(l); p.add(l1); p.add(l2); // add panel to the frame f.add(p); // show the frame f.show(); f.setSize(250, 300); } catch (Exception e) { System.err.println(e.getMessage()); } }} |
Output :
2. Program to add all predefined cursors to a choice
// Java Program to add all predefined cursors to a choiceimport java.awt.*;import java.awt.event.*;import javax.swing.*;class cursor extends JFrame implements ItemListener { // frame static JFrame f; // labels static Label l; // create a choice static Choice c; // default constructor cursor() { } // main class public static void main(String args[]) { // create a frame f = new JFrame("cursor"); // create e panel JPanel p = new JPanel(); // create a choice c = new Choice(); // add items to choice for (int i = 0; i < 14; i++) c.add(Cursor.getPredefinedCursor(i).getName()); // object of class cursor cu = new cursor(); // create a label l = new Label(" label one "); // add item listener to the choice c.addItemListener(cu); // add labels to panel p.add(l); p.add(c); // add panel to the frame f.add(p); // show the frame f.show(); f.setSize(250, 300); } // if an item of choice is selected public void itemStateChanged(ItemEvent e) { // set the cursor l.setCursor(Cursor.getPredefinedCursor(c.getSelectedIndex())); }} |
Output :
3. program to create a custom cursor and add it to labels
// Java program to create a custom cursor and add it to labelsimport java.awt.*;import javax.swing.*;class cursor extends JFrame { // frame static JFrame f; // label static Label l, l1, l2; // default constructor cursor() { // create a frame f = new JFrame("cursor"); // create e panel JPanel p = new JPanel(); // extract image // the files gfg.jpg and gfg.png contains image of cursor Image i = Toolkit.getDefaultToolkit().getImage("f:\\gfg.jpg"); Image i1 = Toolkit.getDefaultToolkit().getImage("f:\\gfg.png"); // point p Point p11 = new Point(0, 0); // create labels l = new Label("label one"); l1 = new Label("label two"); // create cursors Cursor c = Toolkit.getDefaultToolkit().createCustomCursor(i, p11, "cursor1"); Cursor c1 = Toolkit.getDefaultToolkit().createCustomCursor(i1, p11, "cursor2"); // set cursor l.setCursor(c); l1.setCursor(c1); // add labels to panel p.add(l); p.add(l1); // add panel to the frame f.add(p); // show the frame f.show(); f.setSize(250, 300); } // main class public static void main(String args[]) { cursor c = new cursor(); }} |
Output :
Note : The programs might not run in an online IDE please use an offline IDE.
