无法在包中找到课程 [英] Not able to find a class in package

问题描述

请考虑程序包层次结构folder1/hi. folder1包含A.java，hi包含B.java.

Consider a package hierarchy folder1/hi. folder1 contains A.java and hi contains B.java.

B.java:

package aa.pkg;
public class B { }

A.java:

package hi.aa.pkg;
public class A {B b; }

现在B.java成功编译，但是A.java无法编译.

Now B.java compiles successfully, but A.java does not.

我正在cmd中使用这些命令(如果当前目录为folder1):

I am using these commands in cmd (if the current directory is folder1):

javac -d hi hi/B.java
javac -cp hi -d . A.java

它说没有找到B级.

编译A.java的正确cmd命令是什么?或者使该代码工作的代码应该是什么样?

What is the correct cmd commands to compile A.java or what should the code look like for this to work?

推荐答案

您必须将B类导入到A类中，因为这两个类位于不同的程序包中.

You have to import class B into Class A. because both classes are in different packages.

package hi.aa.pkg;
import aa.pkg.B;
public class A {B b; }

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