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How to create Message Pop-Ups with Java?
To create Message Pop-ups, use the following JOptionPane −
JOptionPane.showMessageDialog
We are displaying a tree inside the message pop-ups. The following is an example to create Message Pop-Ups with Java −
Example
package my; import javax.swing.JFrame; import javax.swing.JOptionPane; import javax.swing.JScrollPane; import javax.swing.JTree; import javax.swing.tree.DefaultMutableTreeNode; public class SwingDemo { public static void main(String[] args) throws Exception { JFrame frame = new JFrame("Demo"); DefaultMutableTreeNode node = new DefaultMutableTreeNode("Project"); DefaultMutableTreeNode node1 = new DefaultMutableTreeNode("App"); DefaultMutableTreeNode node2 = new DefaultMutableTreeNode("Website"); DefaultMutableTreeNode node3 = new DefaultMutableTreeNode("WebApp"); node.add(node1); node.add(node2); node.add(node3); DefaultMutableTreeNode one = new DefaultMutableTreeNode("Learning website"); DefaultMutableTreeNode two = new DefaultMutableTreeNode("Business website"); DefaultMutableTreeNode three = new DefaultMutableTreeNode("News publishing website"); DefaultMutableTreeNode four = new DefaultMutableTreeNode("Android app"); DefaultMutableTreeNode five = new DefaultMutableTreeNode("iOS app"); DefaultMutableTreeNode six = new DefaultMutableTreeNode("Editor WebApp"); node1.add(one); node1.add(two); node1.add(three); node2.add(four); node2.add(five); node3.add(six); JTree tree = new JTree(node); frame.add(tree); tree.setVisibleRowCount(8); JOptionPane.showMessageDialog(null, new JScrollPane(tree)); } }
Output
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