JAVA实现比较器

package com.opensource.comparator;

public class Pojo
{
private int value;

public Pojo(int value)
{
this.value = value;
}

public int getValue()
{
return value;
}

public void setValue(int value)
{
this.value = value;
}

@Override
public String toString()
{
return "Pojo [value=" + value + "]";
}

}

package com.opensource.comparator;

import java.util.Comparator;

public class PojoComparator implements Comparator<Pojo>
{

@Override
public int compare(Pojo o1, Pojo o2)
{
return o1.getValue() - o2.getValue();
}

}

package com.opensource.comparator;

import java.util.Arrays;
import java.util.List;
import java.util.concurrent.CopyOnWriteArrayList;

public class Main
{
private final static List<Pojo> avaibleList = new CopyOnWriteArrayList<Pojo>();
/**
* @param args
*/
public static void main(String[] args)
{
avaibleList.add(new Pojo(2));
avaibleList.add(new Pojo(1));
avaibleList.add(new Pojo(3));

Pojo[] arrays = new Pojo[3];
avaibleList.toArray(arrays);
Arrays.sort(arrays, new PojoComparator());

System.out.println(arrays[0].toString());
}

}