卡在使用 smack 制作聊天客户端的第一步

Question

我开始在 smack 和 eclipse 上使用 java 构建聊天客户端，所以我开始编写以下代码：

import org.jivesoftware.smack.XMPPConnection;

public class A {

// Create a connection to the igniterealtime.org XMPP server.
    XMPPConnection connection = new XMPPConnection("myserver.com");
    // Connect to the server
    connection.connect();
    // Most servers require you to login before performing other tasks.
    connection.login("admin2", "123");
public static void main(String[] args) {
    // TODO Auto-generated method stub
     A a= new A();

}

}

但我收到以下两个错误：

Syntax error on token "connect", Identifier expected after this token

和

Syntax error on token ".", @ expected after this token

有人可以帮我吗？

Answer 1

你不能把语句（比如 connection.connect() ）放到方法体之外。

试试这样的：

public class A 
{
    public void start()
    {
        XMPPConnection connection = new XMPPConnection("myserver.com");
        // Connect to the server
        connection.connect();
        // Most servers require you to login before performing other tasks.
        connection.login("admin2", "123");
    }
    public static void main(String[] args) 
    {
        // TODO Auto-generated method stub
        A a= new A();
        a.start();
    }
}