List复制

方式1：

package _test;

import java.util.ArrayList;
import java.util.Collections;
import java.util.List;

import org.apache.commons.collections.CollectionUtils;

public class Test_Java {    
    public static void main(String[] args) {
        List<Integer> list = new ArrayList<>();
        for (int i = 0; i < 10; i++) {
            list.add(i);
        }
        
        List<Integer> copyList = new ArrayList<>();
        CollectionUtils.addAll(copyList, new Object[list.size()]);
        Collections.copy(copyList, list);
        copyList.add(10);
        
        System.out.println("原值："+list);
        System.out.println("copy值："+copyList);
    }
}