为啥我的Import Package里面什么都没有_百度知道
为啥我的Import Package里面什么都没有
import 跟 C&#47有些人写了一阵子 Java?樵;C++ 的 include 相似..class 档案中，这是错误的.，可是对於 Java 的 package 跟 import 还是不 太了解很多人以，实际上?悸 .java 档案中的 import 会让编译器把所 import 的程式通通写到编译好的 ，或是认
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出门在外也不愁java 谁来帮帮我！package&import的问题！_百度知道
java 谁来帮帮我！package&import的问题！
Cat文件也在这里面！}}为什么就引用不到这个Dog这个包呢classpath 我也设计到com上一个文件里！我搞了几天都没高清楚道理是怎么回事我写了这么个小程序！import com.javapublic class Dog{}这个程序编译成功;public class Cat{ public static void main(String [] args){
Dog c = new Dog.Dog。之后我想调用这个程序.java！在com的java文件里面！为什么就是找不到！谁帮帮我
提问者采纳
}}输出结果;public class Cat { / TODO Auto-generated method stub
&#47。&quot，我给你写了个;&#47，检查一下Dog类的代码不行就把代码发过来;你已经进行到Dog的类中; public static void main(String[] args) {
&#47，输出
你已经进行到Dog的类中;你操作的是Dog类的getDog()方法;
&#47，我们帮你解答，应该很简单的错误按你的意思，输出
你操作的是Dog类的getDog()方法;); }}package com：你已经进行到Dog的类中。&);&#47，希望对你有帮助。你操作的是Dog类的getDog()方法;public class Dog { public Dog() {
S/ } public void getDog() {
System.java。package com.getDog();再调用Dog类的getDog()，调用Dog的默认构造函数Dog().java.print(&quot。
Dog c = new Dog().声明Dog类.println(&**
* @param args
*&#47，应该不是Cat类出错根据你提出的问题。
其他类似问题
og c = new D //应该写成Dog c = new Dog()
我写了！可是还是没用！这是为什么！
是命令行编译吗？截个图看看，编译时跟路径也有关系。
没有找到Dog c = new Dog();
是命令行编译吗？如果是的话，截个图看看，编译时跟路径也有关系。
图片发不了！还没到二级呢！我是按照马士兵的视频教程一步一步来的！是不是JDK版本太低？
参考这个：
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其他2条回答
你这两个类是写在一个项目下吗
你的是不是在一个工程下面，要是在同一个下面就肯定没问题
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出门在外也不愁Ammonite repl(一个新的scala的repl)如何import自己写的package?
scala原始的那个repl直接设置classpath (export CLASSPATH=...)就可以了，但是ammonite在设置了classpath之后仍然不能import。此外用ammonite repl+(classpath/import/load class）等关键字搜索无果，只找到一些零星的关于load.ivy的结果，不适用于这里面对的问题。
按投票排序
load.ivy("com.lihaoyi" %% "scalatags" % "0.4.5")
加载mavenload.cp(Path) 加载本地的以下代码运行在
Ammonite Repl 0.5.6import ammonite.ops.Path
val p=Path("/home/cy/workspace/ddd/lib/mongo-java-driver-3.2.2.jar")
load.cp(p)
你可以直接去github上开issue问作者
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My $GOPATH is
"/Users/peter/goworkspace"
My current golang version:
go version go1.6 darwin/amd64
I have multiple golang projects under this workspace, so here is the the structure of directories
+/goworkspace
+---/project1
+---package1
+---file1.go
+---file2.go
+---file3.go
+---package2
+---package3
+---main.go
+---/project2
+---/project3
In my proj1's main.go, I will use the imports from other packages under this project, it will look like:
"./package1"
"./package2"
"./package3"
however when I run "go build",I'm keeping getting error saying:
can't load package:
local import "../package" in non-local package
If I prefer not to use relative package path, for example use it like:
"project1/package1"
"project1/package2"
"project1/package3"
then everything will work.
What is wrong with my code if I use the relative package path?
And what is the best practice for package import if the project1's name will change in the future, for example it is changed to projecet1v2?
Do I need to manually update the imported package's name then?
Rule #1: Don't use relative imports. This is (partly) why you're running into issues. Read through this:
Use the fully qualified import paths (as you showed):
"project1/package1"
"project1/package2"
"project1/package3"
// Or ideally, so others can access it in the future:
"/&yourusername&/project1/package4"
If for some reason you want to version your package, you can either:
Provide a new repository (import URL)
Use a service like gopkg.in () to provide versioned import URLs (e.g. gopkg.in/you/pkgname.v2)
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