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我是 Java 新手。

我所有的源文件（例如 TreeJPanel.java、Tree.java）都在一个名为 jview 的目录中，它们之间存在依赖关系。当我尝试编译时

javac jview/TreeJPanel.java
我明白了：

jview/TreeJPanel.java:39: cannot find symbol
symbol  : class Tree
location: class TreeJPanel
  protected Tree tree;
            ^
jview/TreeJPanel.java:41: cannot find symbol
symbol  : class Tree
location: class TreeJPanel
  public Tree getTree() {
         ^
jview/TreeJPanel.java:45: cannot find symbol
symbol  : class Tree
location: class TreeJPanel
  public void setTree(Tree tree) {

有 15 个类似的错误。我以为我不需要从同一目录中显式导入？我究竟做错了什么？我的问题很可能表明缺乏对 Java 的概念理解——请随时指出。谢谢！

4

3 回答 3

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Was Tree.java first compiled into Tree.class? when TreeJPanel.java was trying to compile, it was searching for it.

于 2012-11-21T04:10:25.823 回答
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尝试一起编译这两个文件：

      javac jview/Tree.java jview/TreeJPanel.java
于 2012-11-21T04:16:38.837 回答
0

因为这很简单，你应该将 Tree 类导入 TreeJpanel 类

您的代码应如下所示

import jview.Tree;

Class TreeJPanel { ....
于 2012-11-21T04:17:04.270 回答