List sorting

package demo.main;
import java.util.Comparator;
public class PersonComparator implements Comparator<Object>{
public int compare(Object arg0, Object arg1) {
Person user0=(Person)arg0;
Person user1=(Person)arg1;
 //首先比较名字，如果名字相同，则比较工资
 int flag=user0.getName().compareTo(user1.getName());
 if(flag==0){
  return user0.getWages().compareTo(user1.getWages());
 }else{
  return flag;
 }  
}
 
 
}