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POinvoking an applet function through javascript
 

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  1. POinvoking an applet function through javascript
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    <p>I need to call an applet method through javascript</p> <p>my applet method goes like this</p> <pre><code>public class MD5encryption extends Applet { private static final long serialVersionUID = 1L; public static String doTheEncryption(final String strText) throws NoSuchAlgorithmException, NoSuchProviderException { String strResult = null; /* do the encryption*/ return strResult; } } </code></pre> <p>and my jsp file goes like this</p> <pre><code>&lt;%@ taglib prefix="s" uri="/struts-tags"%&gt; &lt;script src= "http://www.java.com/js/deployJava.js"&gt;&lt;/script&gt; &lt;script&gt; &lt;!-- applet id can be used to get a reference to the applet object --&gt; var attributes = { id:'md5appletId', code:'com.package.encryptionMD5.MD5encryption', width:1, height:1} ; var parameters = {jnlp_href: 'parameters.jnlp'} ; deployJava.runApplet(attributes, parameters, '1.6'); &lt;/script&gt; &lt;div&gt; &lt;div&gt; &lt;s:form action="Login" validate="true"&gt; &lt;s:textfield name="userName" label="User ID" maxlength="10" required="true" onkeypress="return onlyNumbersChars(event)" onchange="showDob(this,true)" /&gt; &lt;s:password name="password" label="Password" required="true" maxlength="14" /&gt; &lt;tr&gt;&lt;td&gt;&lt;div&gt; &lt;input type="submit" value="Login" onclick="encrypt()"/&gt; &lt;a href="LoginLink.html"&gt;Forgot Password?&lt;/a&gt; &lt;/div&gt;&lt;/td&gt;&lt;/tr&gt; &lt;/s:form&gt; &lt;/div&gt; &lt;/div&gt; &lt;script language="javascript"&gt; function encrypt(){ var password = document.getElementsByName('password')[0]; var md5OfPass = md5appletId.doTheEncryption(password.value); password.value = md5OfPass; } &lt;/script&gt; </code></pre> <p>I'm also using the jnlp file which is at the same location as of applet</p> <pre><code>&lt;?xml version="1.0" encoding="UTF-8"?&gt; &lt;jnlp spec="1.0+" codebase="" href=""&gt; &lt;applet-desc name="Applet Takes Params" main-class="MD5encryption" width="800" height="50"&gt; &lt;param name="paramStr" value="parameter String"/&gt; &lt;param name="paramInt" value="22"/&gt; &lt;/applet-desc&gt; &lt;/jnlp&gt; </code></pre> <p>Am i missing something here as I'm not able to access the function of the applet</p>
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    1. COAre you getting a javascript error in the console? You can also try opening up the java console to see if there are any exceptions while running the applet
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    2. COits throwing javascript error stating that md5appletId.doTheEncryption is not a recognized function
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    3. COand `typeof md5appletId` gives you `Object`?
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