I'm developing a Java applet that show a message box when you visit the site. This is my Java code:
import java.applet.Applet;
import javax.swing.JOptionPane;
public class JavaRun extends Applet {
private static final long serialVersionUID = 1L;
public void init()
{
JOptionPane.showMessageDialog(null, "hello world!");
}
}
This is the html:
<applet width='100' height='100' code='JavaRun' archive='data.jar'>
</applet>
On my computer (that have the java SDK) it's work, but when I'm using it on my laptop that have only the standard Java, I get these errors:
at sun.plugin2.applet.Applet2ClassLoader.findClass(Unknown Source) at sun.plugin2.applet.Plugin2ClassLoader.loadClass0(Unknown Source) at sun.plugin2.applet.Plugin2ClassLoader.loadClass(Unknown Source) at sun.plugin2.applet.Plugin2ClassLoader.loadClass(Unknown Source) at java.lang.ClassLoader.loadClass(Unknown Source) at sun.plugin2.applet.Plugin2ClassLoader.loadCode(Unknown Source) at sun.plugin2.applet.Plugin2Manager.createApplet(Unknown Source) at sun.plugin2.applet.Plugin2Manager$AppletExecutionRunnable.run(Unknown Source) at java.lang.Thread.run(Unknown Source) Exception: java.lang.UnsupportedClassVersionError: Micro : Unsupported major.minor version 51.0... enter code here