对list排序
2016-07-08 11:47
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package com.huawei.kong;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
import java.util.List;
public class ListSortTest
{
/**
* @param args
*/
public static void main(String[] args)
{
List<User> userlist = new ArrayList<User>();
userlist.add(new User("dd", "4"));
userlist.add(new User("aa", "1"));
userlist.add(new User("ee", "5"));
userlist.add(new User("bb", "2"));
userlist.add(new User("ff", "5"));
userlist.add(new User("cc", "3"));
userlist.add(new User("gg", "6"));
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.getAge() + "," + user_temp.getName());
}
}
}
class User
{
String name;
String age;
public User(String name, String age)
{
this.name = name;
this.age = age;
}
public String getAge()
{
return age;
}
public void setAge(String age)
{
this.age = age;
}
public String getName()
{
return name;
}
public void setName(String name)
{
this.name = name;
}
}
class ComparatorUser implements Comparator<User>
{
public int compare(User user0, User user1)
{
// 首先比较年龄,如果年龄相同,则比较名字
int flag = user0.getAge().compareTo(user1.getAge());
if (flag == 0)
{
return user0.getName().compareTo(user1.getName());
}
else
{
return flag;
}
}
}
import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
import java.util.List;
public class ListSortTest
{
/**
* @param args
*/
public static void main(String[] args)
{
List<User> userlist = new ArrayList<User>();
userlist.add(new User("dd", "4"));
userlist.add(new User("aa", "1"));
userlist.add(new User("ee", "5"));
userlist.add(new User("bb", "2"));
userlist.add(new User("ff", "5"));
userlist.add(new User("cc", "3"));
userlist.add(new User("gg", "6"));
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.getAge() + "," + user_temp.getName());
}
}
}
class User
{
String name;
String age;
public User(String name, String age)
{
this.name = name;
this.age = age;
}
public String getAge()
{
return age;
}
public void setAge(String age)
{
this.age = age;
}
public String getName()
{
return name;
}
public void setName(String name)
{
this.name = name;
}
}
class ComparatorUser implements Comparator<User>
{
public int compare(User user0, User user1)
{
// 首先比较年龄,如果年龄相同,则比较名字
int flag = user0.getAge().compareTo(user1.getAge());
if (flag == 0)
{
return user0.getName().compareTo(user1.getName());
}
else
{
return flag;
}
}
}
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