sortcomparator.java

来自「基于WINCE5.0的ARM嵌入式手机上层软件开发」· Java 代码 · 共 43 行

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package PhoneBook;
import javax.microedition.rms.*;
/**
 *
 * @author Administrator
 */
public class SortComparator implements RecordComparator {
	private String name_1 , name_2;

	public int compare(byte[] rec1,byte[] rec2){
		BookAccount account = null;
		try{
		account = BookAccount.deserialize(rec1);
		name_1 = account.getUserName();

		account = BookAccount.deserialize(rec2);
		name_2 = account.getUserName();

		account = null;

		}catch(Exception e){
			account = null;
			System.out.println("deserialize error");
		}
		//按照名字顺序排序
		if(name_1.compareTo(name_2)==0)
		  {
		     return RecordComparator.EQUIVALENT;
		  }
		  else if(name_1.compareTo(name_2)<0)
		  {
		    return RecordComparator.PRECEDES;
		 }

		return RecordComparator.FOLLOWS;
	}
}