public class UserEntity implements Serializable { private Integer id; private String userName; private String phone; } public static void main(string args[]){ Listusers=new ArrayList<>(); users.add(new UserEntity(1,"张三","18399990000")); users.add(new UserEntity(2,"王五","18399990023")); users.add(new UserEntity(3,"里斯","18399990005")); List courseIds= users.stream().map(UserEntity::getUserName).collect(Collectors.toList()); }
最终的结果:[张三,王五,里斯]
欢迎分享,转载请注明来源:内存溢出
评论列表(0条)