package lession;
import java.io.UnsupportedEncodingException;
import java.text.Collator;
import java.util.Comparator;
import java.util.List;
import java.util.ArrayList;
import java.util.Collections;
class User {
String name;
int age;
public User(String name,int age){
this.name=name;
this.age=age;
}
public int getAge() {
return age;
}
public void setAge(int age) {
this.age = age;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
}
class ComparatorUser implements Comparator{
Collator collator = Collator.getInstance(java.util.Locale.CHINA);
public int compare(Object arg0, Object arg1) {
User user0=(User)arg0;
User user1=(User)arg1;
String name0=toUTF_8(user0.getName());
String name1=toUTF_8(user1.getName());
int age0=user0.getAge();
int age1=user1.getAge();
//先比較名字再比較年齡
int flag=collator.getCollationKey(name0).compareTo(collator.getCollationKey(name1));
if(flag==0){
return Integer.valueOf(age0).compareTo(Integer.valueOf(age1));
}else{
return flag;
}
}
private static String toUTF_8(String str) {
try {
return new String(str.getBytes(), "ISO-8859-1");
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
throw new RuntimeException(e);
}
}
}
public class SortTest {
public static void main(String[] args){
List userlist=new ArrayList();
userlist.add(new User("吉斌",4));
userlist.add(new User("何佳",1));
userlist.add(new User("張哲",5));
userlist.add(new User("段建波",6));
userlist.add(new User("鄧斯奇",5));
userlist.add(new User("鄧斯奇",3));
ComparatorUser comparator=new ComparatorUser();
Collections.sort(userlist, comparator);
for (int i=0;i<userlist.size();i++){
User user_temp=(User)userlist.get(i);
System.out.println(user_temp.getName()+","+user_temp.getAge());
}
}
}
上面的程序實(shí)現了，對中文的排序。
默認是根據字符串的ASCII/Unicode的編碼排序的，若想按照漢字的拼音排序，需要把字符串轉換編碼為iso-8859-1.
如果你的文本是本地語(yǔ)言，而不是缺省語(yǔ)言，你需要傳遞一個(gè)本地語(yǔ)種給getInstance()方法
