DownloadApplet.java

import de.dal33t.powerfolder.util.JavaVersion;

import javax.swing.*;

import java.net.MalformedURLException;
import java.net.URL;

public class DownloadApplet extends JApplet {

    /** Minimum Java version for Win32withoutJava is 1.6.0_6 */
    private static final JavaVersion MIN_JAVA_VERSION =
            new JavaVersion(1, 6, 0, 6);

    public void start() {

        String os = System.getProperty("os.name");
        // Default
        String javascript = "WebStart";
        try {
            if (os != null && os.startsWith("Windows")) {
                // Windows (Java)
                javascript = "Win32withJava";

                // Is current version >= minimum version?
                if (JavaVersion.systemVersion().compareTo(MIN_JAVA_VERSION) >= 0)
                {
                    // Windows (with Java)
                    javascript = "Win32withoutJava";
                }
            }
        } catch (Exception e) {
            // Ignore
        }

        try {
            getAppletContext().showDocument(
                new URL("javascript:selectDownload(\"" + javascript + "\")"));
        } catch (MalformedURLException me) {
            // Hmmmmm.
        }
    }
}