java，为什么会出现这些错误？--maven-compiler-plugin:3.7.0

Question

我正在浏览以下 opendaylight 指南：https ://docs.opendaylight.org/en/stable-oxygen/developer-guide/developing-apps-on-the-opendaylight-controller.html#

编译时出现错误：

[ERROR] ...Odl-testProvider.java:[14,17] '{' expected

[ERROR] ...Odl-testProvider.java:[21,15] <identifier> expected

[ERROR] ...Odl-testProvider.java:[21,16] invalid method declaration; return type required

Odl-testProvider.java：

/*

* Copyright © 2017 Copyright(c) Yoyodyne, Inc. and others.  All rights reserved.

*

* This program and the accompanying materials are made available under the

* terms of the Eclipse Public License v1.0 which accompanies this distribution,

* and is available at http://www.eclipse.org/legal/epl-v10.html

*/

package org.opendaylight.solaroi.impl;

import org.opendaylight.controller.md.sal.binding.api.DataBroker;

import org.slf4j.Logger;

import org.slf4j.LoggerFactory;

public class Odl-testProvider //line 14

{

private static final Logger LOG = LoggerFactory.getLogger(Odl-testProvider.class);

private final DataBroker dataBroker;

public Odl-testProvider(final DataBroker dataBroker) //line 21

{

    this.dataBroker = dataBroker;

}

/**

 * Method called when the blueprint container is created.

 */

public void init() 

{

    LOG.info("Odl-testProvider Session Initiated");

}

/**

 * Method called when the blueprint container is destroyed.

 */

public void close() 

{

    LOG.info("Odl-testProvider Closed");

}

}

编译器信息：

目标：maven-compiler-plugin:3.7.0:compile(default-compile)

compiler 'javac', source = 1.8, target = 1.8