question: sets the transparency of the interval color , with 0.0 being fully transparent and 1.0 being fully opaque . concode_field_sep Color backgroundColor concode_elem_sep int PSEUDO_SERIAL_VERSION_UID concode_elem_sep JRDataRange dataRange concode_elem_sep double DEFAULT_TRANSPARENCY concode_elem_sep double alpha concode_elem_sep Double alphaDouble concode_elem_sep String label concode_elem_sep long serialVersionUID concode_field_sep String getLabel concode_elem_sep void setBackgroundColor concode_elem_sep Double getAlphaDouble concode_elem_sep Color getBackgroundColor concode_elem_sep JRDataRange getDataRange concode_elem_sep Object clone concode_elem_sep void setDataRange concode_elem_sep void setLabel concode_elem_sep void readObject
target: void function ( Double arg0 ) { this . alphaDouble = arg0 ; }