destinationcomparator.java

来自「Java program for making trip reservation」· Java 代码 · 共 23 行

import java.util.Comparator;

public class DestinationComparator implements Comparator{

public int compare(Object messageWrapper1, Object messageWrapper2){

	try
	{
		String messageSubject1 =((Trip)messageWrapper1).getDestination();
		String messageSubject2 =((Trip)messageWrapper2).getDestination();
		
		if (messageSubject1 == null){
			return -1;
		}
		else
		return messageSubject1.compareTo(messageSubject2);
	}
	catch (Exception e){
	return 0;
	}
 }
}