April 05
Prde. Ismael H. F. Santos
- ismael@tecgraf.puc-rio.br
2
Exemplo Ordenação -
Comparable
public class Name
implements Comparable {
private String fName,
lName;
public Name(String fName, String
lName) {
if(fName==null || lName==null)
throw new NullPointerException();
this.fName = fName; this.lName
= lName; }
public String fName(){ return
fName; }
public String lName(){ return
lName; }
public boolean
equals(Object o) { // (equals, hasCode) compatíveis
if ( !(o instancede Name) )
return false;
Name n = (Name)o;
return n.fName.equals(fName)
&& n.lName.equals(lName);
}
public int hashCode(){return
31*fName.hashCode()+lName.hashCode();}
public String toString()
{return fName + " " + lName;}
public int
compareTo(Object o) {
Name n = (Name)o; int lastCmp
= lName.compareTo(n.lName);
return (lastCmp!=0 ? lastCmp :
fName.compareTo(n.fName));
}
}