Comparator for User defined object compare

import

java.util.Comparator;

public

class CountyDTO {

private

String state;

private

String country;

public

void setState(String state) {

this

.state = state;

}

public

void setCountry(String country) {

this

.country = country;

}

public

String getState() {

return

state;

}

public

String getCountry() {

return

country;

}

/**

*

@author BM54284

* Comparater for sorting the States for Task 2

*/

public

static enum CountyComparator implements Comparator<CountyDTO> {

STATE_SORT

{

public

int compare(CountyDTO o1, CountyDTO o2) {

if

((null != o1 && null != o1.getState())

&& (null

!= o2 && null != o2.getState())) {

return

o1.getState().compareTo(o2.getState());

} else

{

return

0;

}

}

},

COUNTRY_SORT

{

public

int compare(CountyDTO o1, CountyDTO o2) {

if

((null != o1 && null != o1.getCountry())

&& (null

!= o2 && null != o2.getCountry())) {

return

o1.getCountry().compareToIgnoreCase(o2.getCountry());

} else

{

return

0;

}

}

};

public

static Comparator<CountyDTO> getComparator(

final

CountyComparator... multipleOptions) {

return

new Comparator<CountyDTO>() {

public

int compare(CountyDTO o1, CountyDTO o2) {

for

(CountyComparator option : multipleOptions) {

int

result = option.compare(o1, o2);

if

(result != 0) {

return

result;

}

}

return

0;

}

};

}

}

}




//Call to that comparater

List<CountyDTO> contryandstate = getCountyFinder().getState();

contryandstate.addAll(getAdditionalCounty());

Collections.sort(contryandstate, CountyComparator.getComparator(CountyComparator.COUNTRY_SORT

,CountyComparator.STATE_SORT));