boolean isModified() {
        long lastModified = new File(path).lastModified();
        if (lastModified > this.lastModificationTime) {
            return true;
        } else if (lastModified == 0) {
            return true;
        }
        return false;
    }
boolean isModified ( ) { long lastModified = new File ( path ) . lastModified ( ) ; if ( lastModified > this . lastModificationTime ) { return true ; } else if ( lastModified == 0 ) { return true ; } return false ; }
@return true if the keystore file is modified since it was loaded the first time