如何使用TextMate将库从JAR文件导入Java程序 [英] How to import libraries from JAR-files into a Java program using TextMate

问题描述

我需要用Java编写一个简单的程序，并且喜欢这样做，就像我使用TextMate在Python和Ruby中编程一样。我可以编写并运行一个简单的Hello World程序，但是找不到如何加载外部库的方法。我只需要使用工作目录中的所有* .jar文件进行编译（或者我是否需要首先安装它们？）。这是我的第一次Java体验，所以我希望得到一个详细的答案。

I need to write a simple program in Java and would love to do it the same way I program in Python and Ruby using TextMate. I can write and run a simple Hello World program, but cannot find a way how to load external libraries. I just need to compile with all *.jar files from the working directory (or do I need to intall them first?). This is my first Java-experience, so I would appreciate a detailed answer.

我更喜欢在TextMate中编写代码而不是IDE，所以我想知道这是否可行Java。

I do prefer to code in TextMate not an IDE, so I wonder if this is possible with Java.

推荐答案

为了能够在程序中使用存储在jar文件中的类，这个jar文件必须是类路径。

To be able to use classes stored inside a jar file in your program, this jar file must be part of the classpath.

阅读 http://en.wikipedia.org / wiki / Classpath 有关如何设置类路径的说明。请注意，在编译程序时也是如此。

Read http://en.wikipedia.org/wiki/Classpath for explanations on how to set the classpath. Note that this is also true when compiling your program.

假设您位于源目录的根目录并且想要编译Java文件并将该类放入classes目录：

Suppose you're at the root of your source directory and you want to compile a Java file and put the class in the classes directory:

javac -d ../classes -classpath c:\foo\bar\library1.jar;c:\foo\bar\library2.jar com/foo/bar/HelloWorld.java

现在运行你的类：

java -classpath ..\classes;c:\foo\bar\library1.jar;c:\foo\bar\library2.jar com.foo.bar.HelloWorld

当你的程序变得比2或3个类更大时，你可能想要使用像ant，gradle或maven这样的构建工具来构建你的应用程序。

When your program becomes bigger that 2 or three classes, you'll probably want to use a build tool like ant, gradle or maven to build your application.

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