Dealing with cache issues in Jnlp applications

Even though I had disabled the temporary internet files setting in the java control panel as shown below, my jnlp application will still not pick up the latest changes. This is a common issue faced by java web start application developers and becomes quite annoying if changes are not getting reflected. javaws -uninstall is an useful command related to java web start which clears up the cache for you and you need not struggle with deleting the jar files in the %temp% or other folders.

Command for deleting Java Web Start Cache
javaws -uninstall

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Debugging Java Web Start / JNLP Applications

Steps for debugging a java web start jnlp application

Step 1. Open a command prompt window (Windows)
Step 2. set JAVAWS_TRACE_NATIVE=1
Step 3. set JAVAWS_VM_ARGS=-Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=y,address=8000
Step 4. Run javaws http://server:port/appname/application.jnlp
Step 5. Goto eclipse debug configuration screen and create a new Remote Java Application debug configuration
Step 6. Under the connection properties, specify the hostname of the machine where you have started the terminal and port as 8000, apply and click debug

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