To be able successfully get rid of the Trojan-Downloader Java Agent ft on your computer not only do you need to delete the associated Java Agent files but you also need to upgrade your version of Java for enhanced performance.
The first step is to go to the Start menu button. When the list opens up you have to select the tab for the Control Panel. On the Control Panel you will be able to find the Java Icon. Double click on the icon to open it up and then follow the tab for Temp Files. In this folder you need to delete all the temporary files, as this will clean up your Java cache.
The next step is to upgrade the Java. This will install a newer and more malware-resistant version of Java to your system.
Visit a web page offering a download of the latest Java Runtime Environment 5.0 Update 9 version.Download the program after accepting the license of terms of agreement. The page will refresh after you agree to the license. When the link opens you should choose the Windows Offline Installation with appropriate settings. This will get saved to your desktop.
At this point any programs that are on need to be closed, including the internet browser pages. After this you have to go to the Start menu from where you should select the button for the Control Panel.Once you are in the Control Panel you will see a tab for Add/ Remove Programs. Double click on this tab and then select any outdated versions of Java from here. This has to be done by first selecting any files that have Java Runtime Environment (can also be displayed as JRE and J2SE) listed in the file name. once the files are selected you should click on the Remove tab or the Change/ Remove tab.
You might have to repeat this step a number of times for removing individual Java files. It is advisable to get rid of all the files one by one to ensure a completely clean system.
After you have removed all the files the next step is to restart the computer. When the computer has been rebooted again the last step is to double click on the jre-1_5_0_09-windowsi586-p.exe file on the desktop. This will finish installing the latest Java version into your computer system.