How to Check Jar File Version

To have access to the version of a jar file, you should have access to the jar file. Precisely, you need to take a look at the jar file's manifest.

In case of the J2EE application

String checkjarFilevesion() {

try {

if(logger.isInfoEnabled())

logger.info("Verifying Jar Version");

String jarFilePath = Thread.currentThread().getContextClassLoader().getResource("../lib/javax.jar").getPath().replaceAll("%20", " ").toString();

JarFile jarfile = new JarFile(jarFilePath);

//Implementation-Version: 3.2.6.SP1

Manifest manifest = jarfile.getManifest();

String version = manifest.getMainAttributes().getValue("Implementation-Version");

return version;

} catch (IOException e) {

// TODO Auto-generated catch block

if(logger.isInfoEnabled())

logger.info("Invalid JAR file path");

}

return null;

}

Absolute Path in J2EE Application

String jarFilePath = Thread.currentThread().getContextClassLoader().getResource("../lib/javax.jar").getPath().replaceAll("%20", " ");

Submitting Get request as POST using Javascript - DOM

function dynamicSubmitForm(link)
{
var myURL = link.split('?');
var formObj = document.createElement("form");
formObj.name = "KTDynaForm";
formObj.id = "KTDynaForm";
formObj.action = myURL[0];
formObj.method = "POST";
formObj.setAttribute("style", "display:none;");
if(myURL[1]!=null)
{
var urlArguments = myURL[1].split('&');
for(var i=0;i<urlArguments.length;i++)
{
var actionString = urlArguments[i].split("="); var inputObj = document.createElement("input");
inputObj.type = "hidden";
inputObj.value = actionString[1];
inputObj.name = actionString[0];
formObj.appendChild(inputObj);
}
}


document.body.appendChild(formObj);
formObj.submit();
return true;
}