new SimpleDateFormat("dd MMMM yyyy").format( new Date())

new java.util.Date(2017, 1, 1)
"Teaching Period: " + new SimpleDateFormat("dd MMMM yyyy").format( $F{current_semester_name} )


new SimpleDateFormat("EEEEE, dd MMMMM yyyy").parse($P{todaysDate})
new SimpleDateFormat("dd/MM/yyyy").format($P{report_date})
"Admitted to the "+$F{course_name}+" on "+new SimpleDateFormat("MMMMM dd, yyyy").format($F{course_enrolment_start_date})

to include st, nd, rd, th in date, do it in SQL, and pass string field to ireport instead of date field:
to_char(epe.grad_date, 'DDth FMMonth YYYY')

within ireport:
new SimpleDateFormat("ddth MMMM yyyy").format(new Date()) 

Provider Address:
($V{issuerName}!=null ? $V{issuerName} + "\n" : "" )+
"Student Accounts\n" +
($F{billing_property_name} != null ? $F{billing_property_name}  + "\n" : "") +
($F{billing_postal_subaddress} != null ? $F{billing_postal_subaddress} + " \n" : 
($F{billing_street_subaddress} != null ? $F{billing_street_subaddress} + "/" : "") +
($F{billing_street_number} != null ? $F{billing_street_number} + " " : "") +
($F{billing_street_name} != null ? $F{billing_street_name} + "\n" : "")) +
($F{billing_city} != null ? $F{billing_city} + " " : "") +
($F{billing_state_name} != null ? $F{billing_state_name} + " " : "") +
($F{billing_postal_code} != null ? $F{billing_postal_code} + "\n" : "") +
($F{billing_country_name} != null && !$F{billing_country_name}.equals("AUS") && !$F{billing_country_name}.equals("AUST") && !$F{billing_country_name}.equals("AUSTRALIA") && !$F{billing_country_name}.equals("Australia")? $F{billing_country_name} : "")
+"\nPhone: " + ($F{billing_fixed_phone_number}!=null ? $F{billing_fixed_phone_number} : ($F{billing_other_phone_number}!=null ? $F{billing_other_phone_number} : ($F{billing_mobile_phone_number}!=_phone_number} : ($F{billing_mobile_phone_number}!=null ? $F{billing_mobile_phone_number} : "" )))


Residential Address:
$F{first_name}+" "+$F{last_name}+"\n"+
($F{residential_property_name} != null ? $F{billingresidential_mobileproperty_phone_numbername}  + "\n" : "" ))) 

Residential Address:
+
($F{firstresidential_postal_name}+" "+$F{last_name}+subaddress} != null ? $F{residential_postal_subaddress} + "\n"+ : 
($F{residential_street_subaddress} != null && !$F{residential_street_subaddress}.equals("") ? $F{residential_street_subaddress}.replaceAll("\\\\'", "'") + "/" : "") +
($F{residential_street_number} != null && !$F{residential_street_number}.equals("") ? $F{residential_street_number}.replaceAll("\\\\'", "'") + " " : "") +
($F{residential_street_name} != null && !$F{residential_street_name}.equals("") ? $F{residential_street_name}.replaceAll("\\\\'", "'") + '\n' : "")) +
($F{residential_city} != null && !$F{residential_city}.equals("") ? $F{residential_city}.replaceAll("\\\\'", "'") + ", \t" : "") + 
($F{residential_state_abbreviation}!= null && !$F{residential_state_abbreviation}.equals("") ? $F{residential_state_abbreviation}.replaceAll("\\\\'", "'") + " ": "") +
($F{residential_postal_code}!= null && !$F{residential_postal_code}.equals("") ? $F{residential_postal_code}.replaceAll("\\\\'", "'") + " ": "") +
($F{residential_country_geo_id} != null && !$F{residential_country_geo_id}.equals("") && !$F{residential_country_geo_id}.equals("AUSTRALIA") && !$F{residential_country_geo_id}.equals("AUS") ? ? "\n" + $F{residential_country_geo_id}.replaceAll("\\\\'", "'") : "")


Billing Address:
$F{first_name}+" "+$F{last_name}+"\n" +
($F{residential_country_geo_id}.replaceAll("\\\\'", "'") billing_property_name} != null ? $F{billing_property_name}  + "\n" : "") 

Billing Address:
+
($F{firstbilling_postal_name}+" "+$F{last_name}+subaddress} != null ? $F{billing_postal_subaddress} + "\n"+ : 
($F{billing_street_subaddress} != null && !$F{billing_street_subaddress}.equals("") ? $F{billing_street_subaddress}.replaceAll("\\\\'", "'") + "/" : "") +
($F{billing_street_number} != null && !$F{billing_street_number}.equals("") ? $F{billing_street_number}.replaceAll("\\\\'", "'") + " " : "") +
($F{billing_street_name} != null && !$F{billing_street_name}.equals("") ? $F{billing_street_name}.replaceAll("\\\\'", "'") + '\n' : "")) +
($F{billing_city} != null && !$F{billing_city}.equals("") ? $F{billing_city}.replaceAll("\\\\'", "'") + ", \t" : "") + 
($F{billing_state_abbreviation}!= null && !$F{billing_state_abbreviation}.equals("") ? $F{billing_state_abbreviation}.replaceAll("\\\\'", "'") + " ": "") +
($F{billing_postal_code}!= null && !$F{billing_postal_code}.equals("") ? $F{billing_postal_code}.replaceAll("\\\\'", "'") + " ": "") +
($F{billing_country_geo_id} != null && !$F{billing_country_geo_id}.equals("") && !$F{billing_country_geo_id}.equals("AUSTRALIA") && !$F{billing_country_geo_id}.equals("AUS") ? "\n" + $F{billing_country_geo_id}.replaceAll("\\\\'", "'") : "")


($F{billing_property_name} != null ? $F{billing_property_name}  + "\n" : "") +
($F{billing_street_subaddress} != null ? $F{billing_street_subaddress} + " " : "") +
($F{billing_postal_subaddress} != null ? $F{billing_postal_subaddress} + " \n" : "") +
($F{billing_street_subaddress} != null ||? $F{billing_street_subaddress} != null ? "\n+ "/" : "") +
($F{billing_street_number} != null ? $F{billing_street_number} + " " : "") +
($F{billing_street_name} != null ? $F{billing_street_name} + "\n" : "")) +
($F{billing_city} != null ? $F{billing_city} + " " : "") +
($F{billing_state_province_geo_id} != null ? $F{billing_state_province_geo_id} + " " : ($F{billing_state_abbreviation} != null ? $F{billing_state_abbreviation} + " " : " ")) +
($F{billing_postal_code} != null ? $F{billing_postal_code} + "\n" : "") +
($F{billing_country_name} != null ? $F{billing_country_name} + "\n" : "")


($F{billing_address1} != null ? $F{billing_address1}.replaceAll("\\\\'", "'") + '\n' : "") +
($F{billing_address2} != null ? $F{billing_address2}.replaceAll("\\\\'", "'") + '\n' : "") +
($F{billing_city} != null ? $F{billing_city}.replaceAll("\\\\'", "'") + '\t' : "") + "  " +
($F{billing_state} != null ? $F{billing_state_abbrev}.replaceAll("\\\\'", "'") + "   " : ($F{billing_state}!=null ? $F{billing_state}.replaceAll("\\\\'", "'") + "   " : "")) +
($F{billing_postal_code} != null ? $F{billing_postal_code}.replaceAll("\\\\'", "'") : "") +
($F{billing_country} != null && !$F{billing_country}.equals("AUSTRALIA") ? "\n" + $F{billing_country}.replaceAll("\\\\'", "'") : "")


($F{postal_address1} != null ? $F{postal_address1}.replaceAll("\\\\'", "'") + '\n' : "") +
($F{postal_address2} != null ? $F{postal_address2}.replaceAll("\\\\'", "'") + '\n' : "") +
($F{postal_city} != null ? $F{postal_city}.replaceAll("\\\\'", "'") + '\t' : "") + "  " +
($F{postal_state} != null ? $F{postal_state_abbrev}.replaceAll("\\\\'", "'") + "   " : ($F{postal_state}!=null ? $F{postal_state}.replaceAll("\\\\'", "'") + "   " : "")) +
($F{postal_state_abbrev} != null ? $F{postal_state_abbrev}.replaceAll("\\\\'", "'") : "") +
($F{postal_country} != null && !$F{postal_country}.equals("AUSTRALIA") ? "\n" + $F{postal_country}.replaceAll("\\\\'", "'") : "")