Java中list集合深复制
import org.apache.commons.collections.CollectionUtils; import java.util.ArrayList; import java.util.Collections; import java.util.List; public class CopyTest { public static void main(String[] args) { List<Integer> list = new ArrayList<>(); for (int i = 0; i < 10; i++) { list.add(i); } //list深度拷贝 List<Integer> newList = new ArrayList<>(); CollectionUtils.addAll(newList, new Object[list.size()]); Collections.copy(newList, list); newList.set(0, 10); System.out.println("原list值:" + list); System.out.println("新list值:" + newList); } }
原list值:[0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
新list值:[10, 1, 2, 3, 4, 5, 6, 7, 8, 9]
微信搜索“HUC思梦”关注我吧,关注有惊喜,不定时有免费资源分享!