Strange error in Eclipse for android -

i faced strange error while working on android in eclipse.the situation follows.i have working project.while working on activity java file, unfortunately system shut down.when reopen eclipse after opening system, of java files of project converted ascii characters.i dont have also.please me.the resulting java file following,

right click on project -> properties -> resource -> text file encoding , choose encoding (utf-8, etc.)

edit :

another approach window -> preferences -> general -> workspace , choose encoding here