【tooltip】import javax.swing.JLabel;
import javax.swing.JOptionPane;
public class Main {
public static void main(String[] args) {
String html = "<html><body>" + "<h1>Header</h1>"
+ "<img src='http://www.w3cschool.cn/style/download.png' "
+ "width='160' height='120'>";
JLabel label = new JLabel("Point at me!");
label.setToolTipText(html);
JOptionPane.showMessageDialog(null, label);
}
}
