How to call a JavaScript function from a Java applet

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Calling a JavaScript function from a Java applet is really simple; in order to approach it we need to use the showDocument method, see the example below of the Java applet:

import java.net.*;

import java.applet.*;

public class MyApplet extends Applet

{

public void init()

{

String msg = "Hello World...";

try {

URL _url = new URL("javascript: callme(\"" msg "\")"

getAppletContext().showDocument( _url) );

}

catch (MalformedURLException e) {

e.toString();

}

}

}

Next we need the JavaScript function:

<script language="JavaScript" type="text/javascript">

function callme(msg)

{

try{

alert(msg);

}

catch(e){

alert(e);

}

}

</script>

Finally we code the HTML code:

<APPLET CODE="MyApplet.class"

NAME="myApplet"

MAYSCRIPT

HEIGHT=15

WIDTH=15>

</APPLET>

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