如何在Java中调用同一个包和同一个目录中的类？

Question

基本上我有：

package duck.reg.pack;

import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
public class Test extends HttpServlet {
    private static final long serialVersionUID = 1L;
    public Test() {
        super();
    }
    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        response.getWriter().append("Served at: ").append(request.getContextPath());
        DBConnect DB = new DBConnect();
    }
}

package duck.reg.pack;

import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class DBConnect {
    private Connection con;
    private Statement st;

    public DBConnect(){
        System.out.println("Hi there!");
        return;
    }
}

C:\classes\duck\reg\pack\Test.java  +  DBConnect.java

C:\classes\duck\reg\pack>javac -cp "C:\Users\Unknown\JavaEEWorkspace\lib\*" Test.java

错误：只有在显式请求批注处理时才接受类名“test”

非常感谢所有的回复：）

Answer 1

您需要从顶部包（位于文件系统树的根部）运行编译器。所以cd到

cd C:\classes

然后跑

javac -cp "C:\Users\Unknown\JavaEEWorkspace\lib\*" duck\reg\pack\*.java