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本文實例講述了java實現ArrayList根據存儲對象排序功能。分享給大家供大家參考，具體如下：

與c++中的qsort的實現極為相似，構建新的比較對象Comparator即可

									package demo;

									import java.util.ArrayList;

									import java.util.Collections;

									import java.util.Comparator;

									class Stu{

									  public int age;

									  private String name;

									  public Stu(String name,int age){

									    this.age=age;

									    this.name=name;

									  }

									  public String toString(){

									    String str=name+"is "+age;

									    return str;

									  }

									}

									public class Sort{

									  @SuppressWarnings({ "unchecked", "rawtypes" })

									 public static void main(String[] args){

									    ArrayList<Stu> s=new ArrayList<Stu>();

									    s.add(new Stu("cjc",25));

									    s.add(new Stu("jake",17));

									    s.add(new Stu("john",30));

									    s.add(new Stu("Alice",23));

									    System.out.println("服務器之家測試結果：");

									    System.out.println("The order before sorting!");

									    System.out.println(s);

									    //對集合中的元素更具年齡進行排序

									    Collections.sort(s,new Comparator(){

									      @Override

									      public int compare(Object o1, Object o2) {

									        // TODO Auto-generated method stub

									        Stu stu1=(Stu)o1;

									        Stu stu2=(Stu)o2;

									        return stu2.age-stu1.age;

									      }

									    });

									    System.out.println("The order after sorting!");

									    System.out.println(s);

									  }

									}