导入 javax.vecmath

Import javax.vecmath

提问by user319869

I would like to use javax.vecmathin my Java program but unfortunately it says:

我想javax.vecmath在我的 Java 程序中使用，但不幸的是它说：

The import javax.vecmath cannot be resolved

导入 javax.vecmath 无法解析

Should I add the jar by myself in the project? Where can I find that jar file? I'm on Ubuntu/Eclipse Galileo.

我应该在项目中自己添加 jar 吗？我在哪里可以找到那个 jar 文件？我在 Ubuntu/Eclipse Galileo 上。

回答by Bozho

Download(updated) the jar and add it to the classpath. In the linked page it is in the "zip binaries", and there in j3d-jre.zip's lib dir.

下载（更新）jar 并将其添加到类路径中。在链接页面中，它位于“zip 二进制文件”中，并且位于j3d-jre.zip的 lib 目录中。

回答by Laurence Gonsalves

On Ubuntu you can apt-get install libvecmath-java. On other systems do what Petar Minchev suggests, or search on Google for something like "java vecmath", which turns up https://vecmath.dev.java.net/, and then go to their downloads page.

在 Ubuntu 上你可以apt-get install libvecmath-java。在其他系统上，按照 Petar Minchev 的建议进行操作，或者在 Google 上搜索“java vecmath”之类的内容，该内容会出现https://vecmath.dev.java.net/，然后转到他们的下载页面。

回答by user3786745

Search for the vecmathfile, you may find it in /usr/share/java.

搜索该vecmath文件，您可能会在/usr/share/java.

Copy the contents of this folder to /jdk_installation_folder/jre/lib/ext.

将此文件夹的内容复制到/jdk_installation_folder/jre/lib/ext.

For me, it is /usr/lib/jvm/java-7-openjdk-amd64/jre/lib/ext.

对我来说，是/usr/lib/jvm/java-7-openjdk-amd64/jre/lib/ext。

To copy you can use either the cp-command or change the extfolder permission to 777using chmod.

要复制，您可以使用 -cp命令或将ext文件夹权限更改为777using chmod。

$ chmod 777 /usr/lib/jvm/java-7-openjdk-amd64/jre/lib/ext

Then copy all the files in file explorer.

然后复制文件资源管理器中的所有文件。

$ chmod 755 /usr/lib/jvm/java-7-openjdk-amd64/jre/lib/ext

If you do did not find the vecmath.jarfile, then download and install it.

如果您没有找到该vecmath.jar文件，请下载并安装它。

apt-get install libvecmath-java

回答by Vivek Vermani

This package is part of Java3D.

这个包是 Java3D 的一部分。

回答by janos

Instead of trying to obtain the file through some OS-dependent package, it would be better to use a dependency manager, for example Maven or Gradle. Using Maven, you could add this dependency to the pom.xmlfile of your project:

与其尝试通过某些依赖于操作系统的包获取文件，不如使用依赖管理器，例如 Maven 或 Gradle。使用 Maven，您可以将此依赖项添加到pom.xml您的项目文件中：

<dependency>
    <groupId>javax.vecmath</groupId>
    <artifactId>vecmath</artifactId>
    <version>1.5.2</version>
</dependency>

See the latest version of the package on Maven Central.

在Maven Central上查看包的最新版本。

---

---

As the top-voted answer suggests, you can get the jar in Ubuntu with:

正如最高投票的答案所暗示的那样，您可以通过以下方式在 Ubuntu 中获取 jar：

apt-get install libvecmath-java

And then you can find the location of the jar file with:

然后你可以找到jar文件的位置：

dpkg -L libvecmath-java | grep jar$

Which should output something like:

应该输出如下内容：

/usr/share/java/vecmath-1.5.2.jar
/usr/share/java/vecmath.jar

It's really just one jar, the file without version is a symbolic link to the other.

它实际上只是一个 jar，没有版本的文件是另一个的符号链接。

To add a jar to the build path in Eclipse (in a non-Maven project):

将 jar 添加到 Eclipse 中的构建路径（在非 Maven 项目中）：

1. Right-click on the project
2. Select Build Path / Add External Archives...
3. Browse to the jar file and select it

1. 右键单击项目
2. 选择构建路径/添加外部档案...
3. 浏览到 jar 文件并选择它

---

---

In other operating systems you can download the jar file directly from Maven Central:

在其他操作系统中，您可以直接从 Maven Central 下载 jar 文件：

https://mvnrepository.com/artifact/javax.vecmath/vecmath/

https://mvnrepository.com/artifact/javax.vecmath/vecmath/

回答by SkyWalker

Suggestion#1:

建议#1：

libvecmath-javasoftware package provides javax.vecmath vector math package, you can install in your Ubuntu 17.04 (Zesty Zapus)by running the commands given below on the terminal,

libvecmath-java软件包提供了 javax.vecmath 向量数学包，您可以Ubuntu 17.04 (Zesty Zapus)通过在终端上运行下面给出的命令来安装，

$ sudo apt-get update
$ sudo apt-get install libvecmath-java 

libvecmath-java is installed in your system.

libvecmath-java 已安装在您的系统中。

Make ensure the libvecmath-java package were installed using the commands given below,

确保使用下面给出的命令安装了 libvecmath-java 包，

$ sudo dpkg-query -l | grep libvecmath-java *

You will get with libvecmath-java package name, version, architecture and description in a table.

您将在表格中获得 libvecmath-java 包名称、版本、架构和描述。

Resource Link:http://thelinuxfaq.com/ubuntu/ubuntu-17-04-zesty-zapus/libvecmath-java

资源链接：http : //thelinuxfaq.com/ubuntu/ubuntu-17-04-zesty-zapus/libvecmath-java

Suggestion#2:

建议#2：

Open a terminal and install the Java 3D API. This api is also includes vecmath.jar.

打开终端并安装 Java 3D API。这个 api 还包括 vecmath.jar。

sudo apt-get install libjava3d-java

Resource Link:

资源链接：

1. https://askubuntu.com/a/626128
2. https://www.howtoinstall.co/en/ubuntu/xenial/libjava3d-java

1. https://askubuntu.com/a/626128
2. https://www.howtoinstall.co/en/ubuntu/xenial/libjava3d-java

Suggestion#3:

建议#3：

You can also download the zip, binary or exe from the following oracle link:

您还可以从以下 oracle 链接下载 zip、二进制文件或 exe：

1. http://www.oracle.com/technetwork/java/javasebusiness/downloads/java-archive-downloads-java-client-419417.html#java3d-1.5.1-oth-JPR

1. http://www.oracle.com/technetwork/java/javasebusiness/downloads/java-archive-downloads-java-client-419417.html#java3d-1.5.1-oth-JPR

Suggestion#4:

建议#4：

In eclipse, step by step installation procedure with pictures, is given in the following link:

在eclipse中，有图片的分步安装过程，在以下链接中给出：

1. https://www.cs.utexas.edu/~scottm/cs324e/handouts/setUpJava3dEclipse.htm

1. https://www.cs.utexas.edu/~scottm/cs324e/handouts/setUpJava3dEclipse.htm

回答by kjanderson2

If you are having this issue in an Android project in Android Studio, I had a similar problem and added the following to my dependencies inside of app/build.gradle

如果您在 Android Studio 的 Android 项目中遇到此问题，我遇到了类似的问题，并将以下内容添加到 app/build.gradle 中的依赖项中

implementation 'javax.vecmath:vecmath:1.5.2'