This is a file manager and Zip extractor for java phone with another useful tools.it's easy to extract.After download file,go to X-plore file manager and then go to the folder you downloaded the file you will see the zip there.click on the zip folder,there are some files there. you have to see this file:"file name.jar" .then go to menu and select "extract selected item".after this, again go to menu and select "extract item here" finish! now exit the software and go to the folder and find the jar file.go to options and select "change file name" delete the "_jar" and change it to".jar".file is ready!
NOTE:delete the long name and special characters and set a short name
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