public c l a s s Country {
S t ri n g countryName ;
int noO fCi ti z e n s ;
boolean i s Ro yal ;
S t ri n g c o n ti n e n t ;
int p o l i t i c a l S t a t e ;
public Country ( ) {
countryName = "" ;
noO fCi ti z e n s = 0 ;
i s Ro yal = f a l s e ;
c o n ti n e n t = "" ;
p o l i t i c a l S t a t e = 0 ;
}
public Country ( S t ri n g n , int nc , boolean r ,
S t ri n g c , int p ) {
countryName = n ;
noO fCi ti z e n s = nc ;
i s Ro yal = r ;
c o n ti n e n t = c ;
p o l i t i c a l S t a t e = p ;
}
public S t ri n g g e t P o l i t i c a l S t a t e ( ) {
S t ri n g r e s u l t ;
switch ( p o l i t i c a l S t a t e ) {
6
case 1 :
r e s u l t = "war" ;
break ;
case 2 :
r e s u l t = " I n c r e a s e ␣ i n ␣ f o r c e ␣ r e a d i n e s s " ;
break ;
case 3 :
r e s u l t = " i n c r e a s e ␣ i n t e l l i g e n c e " ;
break ;
case 4 :
r e s u l t = " peace " ;
break ;
de fau lt :
r e s u l t = " not ␣ e n t e r e d ␣ ye t " ;
}
return r e s u l t ;
}
public int compareTo ( Country a ){
return noO fCi ti z e n s − a . noO fCi ti z e n s ;
}
public s t a t i c int compareTo ( Country a , Country b ){
return a . noO fCi ti z e n s − b . noO fCi ti z e n s ;
}
public boolean isKingdom ( ) {
return i s Ro yal ;
}
public void s e t P o l i t i c a l S t a t e ( int p ) {
p o l i t i c a l S t a t e = p ;
}
public void i n c r e a s e C i t i z e n s ( int i ) {
noO fCi ti z e n s += i ;
}
public S t ri n g d i s p l a y ( ) {
return "Country␣name␣" + countryName + "\n"
+ " I t s ␣ po p ula tio n ␣ i s ␣" + noO fCi ti z e n s + "\n"
+ " I t ␣" + ( i s Ro yal ? " i s ␣" : " i s n ’ t ␣" ) +"a␣Kingdom\n"
+ " I t ␣ i s ␣ l o c a t e d ␣ i n ␣" + c o n ti n e n t + "\n"
+ " I t s ␣ p o l i t i c a l ␣ s t a t e ␣ i s ␣" + g e t P o l i t i c a l S t a t e ( ) ;
}
public s t a t i c void main ( S t ri n g [ ] a rg s ) {
Country c1 = new Country ( ) ;
c1 . countryName = "Egypt" ;
c1 . i s Ro yal = f a l s e ;
c1 . c o n ti n e n t = " A f ri ka " ;
System . out . p r i n t l n ( c1 . d i s pl a y ( ) ) ;
Country c2 = new Country ( "Germany" , 20 , f a ls e , "Europe" , 4 ) ;
System . out . p r i n t l n ( c2 . d i s pl a y ( ) ) ;
c1 . p o l i t i c a l S t a t e = c2 . p o l i t i c a l S t a t e ;
System . out . p r i n t l n ( c1 . d i s pl a y ( ) ) ;
System . out . p r i n t l n ( ( c1 . compareTo ( c2 ) >= 0 )? c1 . countryName : c2 . countryName ) ;
System . out . p r i n t l n ( ( compareTo ( c1 , c2 ) >= 0 )? c1 . countryName : c2 . countryName ) ;