SimpleFileVisitor

public class Searchapp extends SimpleFileVisitor{

@override
public FileVisitResult visitFile(Path file, BasicFileAttributes attrs){

PathMatcher matcher=FileSystems.getDefult().getPathMatcher("glob:*.{html,java}");
Path name=file.getFileName();
if(name!=null&& matcher.match(name)) System.out.println(file);
return FileVisitorResult.CONTINUE;

}

public static void main(String[] args) {

Files.walkFileTree(Path.get("c:/temp"),new Searchapp());
    }

}