package chc;public class StuVo implements Comparable<StuVo>{	private String id;	private String name;	private Integer age;	public StuVo(String id, String name, Integer age) {		this.id=id;		this.name=name;		this.age=age;	}	public int compareTo(StuVo stu) {		return this.name.compareTo(stu.getName());	}	public String getId() {		return id;	}	public void setId(String id) {		this.id = id;	}	public String getName() {		return name;	}	public void setName(String name) {		this.name = name;	}	public Integer getAge() {		return age;	}	public void setAge(Integer age) {		this.age = age;	}}

package chc;import java.util.ArrayList;import java.util.Collections;import java.util.Iterator;import java.util.List;public class ArrayListSortDemo {	public static void main(String[] args) {		List<StuVo> stuList=new ArrayList<StuVo>();		StuVo stu=new StuVo("1","h小明",11);		stuList.add(stu);				stu=new StuVo("2","d阿熊",15);		stuList.add(stu);				stu=new StuVo("3","a張三",10);		stuList.add(stu);				stu=new StuVo("4","b李四",15);		stuList.add(stu);			Collections.sort(stuList);				Iterator<StuVo> it =stuList.iterator();		while(it.hasNext()){			System.out.println(it.next().getName());		}	}}