You can try to recover your archive files with Easy Drive Data Recovery software.
It uses unique modern algorithms to recover files that other software either recovers incorrectly or is unable to detect.
JAR files (Java ARchive) allows aggregating many files into one, it is usually used to hold Java classes in a library. i.e. Math.jarWAR files (Web Application aRchive) stores XML, java classes, and JavaServer pages for Web Application purposes.EAR files (Enterprise ARchive) combines JAR and WAR files to make a combined archive for Enterprise Applications.
can't open rar files at all. receive archive error message
A program that can make .zip files. You can download archive files with it and then extract them.
System restore cannot recover delete files.
You can make an archive using winrar or other program. When you install winrar, you mark the files--> right butoon--> add to archive,and they`ll be ready :)
Easy - CD to the directory with the files and folders, and do: zip -r foo *
To use the archive attribute (A), back up files telling the archiving application (WinZip, etc.) to clear the archive attribute of the files it stores copies of. Whenever one of those files is modified in the future, or whenever a new file is created, its archive attribute is set. Therefore, on subsequent backups, you can have the application back up only files that have the archive attribute set (and clear the archive attribute while doing so). That way you don't waste time and drive space backing up files that haven't changed since the last time they were backed up.
The Java Archive (JAR) file format enables you to bundle multiple files into a single archive file and Typically a JAR file contains the class files and auxiliary resources associated with applets and applications
No - system restore is designed to 'roll back' your computer to a point in time before a problem occurred. It will undo installations, but not restore deleted files.
The best feature for retrieving files in a computer is the backup and restore feature. In case you lose important documents and files, you can restore your PC to the last restore point you created.
To restore it you have to delete your system32 files.
You don't 'run' them, they are an archive of compressed files. You need a program like WINRAR to open them.