?? myutils.java
字號:
import java.util.*;
/**
* Description:
* <br/>Copyright (C), 2005-2008, Yeeku.H.Lee
* <br/>This program is protected by copyright laws.
* <br/>Program Name:
* <br/>Date:
* @author Yeeku.H.Lee kongyeeku@163.com
* @version 1.0
*/
public class MyUtils
{
/*
public static <T> void copy(Collection<T> dest , Collection< ? extends T> src)
{
for (T ele : src)
{
dest.add(ele);
}
}
*/
public static <T> T copy(Collection<? super T> dest , Collection<T> src)
{
T last = null;
for (T ele : src)
{
last = ele;
dest.add(ele);
}
return last;
}
public static void main(String[] args)
{
List<Number> ln = new ArrayList<Number>();
List<Integer> li = new ArrayList<Integer>();
li.add(5);
Integer last = copy(ln , li);
System.out.println(ln);
}
}
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