The Java applications that process the input data to the result are invoked by the applet. The author needs to ensure that none The applications are restricted by the browser's Java security manager when executed within a browser. Consequently, applications cannot use Standard in, out, and error streams. The application can only access files from the original document server and do not have access to the clients local file system. Acme ACME (1998), a Java software company, claims to have a general approach to ensure that all applications can execute in an applet. Recent browsers include security managers that can be adjusted so that many applet restrictions do not apply to trusted applets. Finally, the Java class files have to be available in the package hierarchy the applet tag's codebase points at.