boolean function ( ) { return false ; }
returns true if this writer has encountered and suppressed an error . used by printwriters as an alternative to checked exceptions . concode_field_sep Object lock concode_field_sep void flush concode_elem_sep void close concode_elem_sep void write concode_elem_sep void write concode_elem_sep void write concode_elem_sep void write concode_elem_sep void write concode_elem_sep Writer append concode_elem_sep Writer append concode_elem_sep Writer append