java-jar文件不直接在Windows中运行，而是通过命令提示符运行
[英]java- jar file does not run directly in windows, but runs through command prompt
问题描述
I am trying to run a desktop java app on a Windows 2008 Server based PC. 
我试图在基于Windows 2008 Server的PC上运行桌面java应用程序。
While I can run the program through command prompt viz. 虽然我可以通过命令提示符运行该程序。 java -jar filename.jar, when I double click on the jar file I get an error message "Could not find the main class. Program will now exit". java -jar filename.jar，当我双击jar文件时，我收到一条错误消息“无法找到主类。程序现在将退出”。
I am using Netbeans v7.0.1 on Windows, to develop this application. 我在Windows上使用Netbeans v7.0.1来开发此应用程序。 Kindly clarify on how to run the app directly on double clicking its icon... 请详细说明如何在双击其图标时直接运行应用程序...
2 个解决方案
解决方案1
2 2011-10-04 15:33:24
You need to set the Main-class in the Manifest.txt file 您需要在Manifest.txt文件中设置Main-class
Main-Class: MyPackage.MyClass
This sets the entry point for the application. 这将设置应用程序的入口点。
Check out the documentation for more details, 查看文档以获取更多详细信息，
http://download.oracle.com/javase/tutorial/deployment/jar/appman.html http://download.oracle.com/javase/tutorial/deployment/jar/appman.html
解决方案2
0 2011-10-04 15:36:06
Since you're using Netbeans, you need to edit the manifest.mf file in the META-INF folder in your .jar archive to point to your MAIN class. 由于您使用的是Netbeans，因此需要编辑.jar存档中META-INF文件夹中的manifest.mf文件以指向您的MAIN类。
If your .jar file is myjar.jar , open it up, then open the manifest.mf file and edit the Main-Class line to point to your main class (the one that contains your main method). 如果你的.jar文件是myjar.jar ，打开它，然后打开manifest.mf文件并编辑Main-Class行指向你的主类（包含你的main方法的那个）。
Main-Class: mainclass.myjar
Save it and run. 保存并运行。
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