returns true if the given file is a jar file and false otherwise . concode_field_sep String ZIP_EXTENSION concode_elem_sep String JAR_EXTENSION concode_elem_sep String BIN_FOLDER concode_field_sep boolean isZipFile concode_elem_sep void extract
boolean function ( File arg0 ) { return arg0 . isFile ( ) && arg0 . getName ( ) . toLowerCase ( ) . endsWith ( JAR_EXTENSION ) ; }