[英]class file in JAR seems to be ignored; class file being picked up from directory on classpath instead
I am trying to get a simple JAR file executing on the CLI (without a manifest).我正在尝试在 CLI 上执行一个简单的 JAR 文件(没有清单)。 The folder structure is as follows:
文件夹结构如下:
mods\un.jar
out\test\Main.class
src\test\Main.java
Here is Main.java
:这是
Main.java
:
package test;
public class Main{
public static void main(String []args){
System.out.println("Unnamed module...");
}
}
Here are the commands from the root folder:以下是根文件夹中的命令:
javac -d out src\Main.java
java -cp out test.Main - this works
jar -cvf mods\un.jar out\test\Main.class
java -cp mods\un.jar;out test.Main - works (when 'out' is in classpath)
java -cp mods\un.jar test.Main - ERROR
The last line generates the errors:最后一行生成错误:
Error: Could not find or load main class test.Main
Caused by: java.lang.ClassNotFoundException: test.Main
I have looked at the JAR zip and it looks ok.我查看了 JAR zip,看起来还不错。 The MANIFEST.MF is the default one but that is okay as I am explicitly telling Java what class to start with (the class with main()).
MANIFEST.MF 是默认的,但这没关系,因为我明确地告诉 Java 从哪个类开始(带有 main() 的类)。 The contents are:
内容是:
META-INF\MANIFEST.MF
out\test\Main.class
The manifest itself is:清单本身是:
Manifest-Version: 1.0
Created-By: 11 (Oracle Corporation)
So it looks like the class file in the JAR is not being picked up at all.所以看起来 JAR 中的类文件根本没有被拾取。 If I omit the
out
folder when I run java
or if I rename the .class
file in the out
folder), I get the class not found error.如果我在运行
java
时省略了out
文件夹,或者如果我重命名了out
文件夹中的.class
文件),我会收到 class not found 错误。 I would like to get it working without a manifest.我想让它在没有清单的情况下工作。
Any ideas?有任何想法吗?
Thanks, Seán.谢谢,肖恩。
您需要更改到 'out' 目录以使您的包根在 jar 中正确:
jar -cvf mods\un.jar -C out test\Main.class
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