无法打开可执行jar文件

Question

这些正是创建可执行jar文件的步骤，以便我可以通过双击运行我的swing程序，但它给了我一个错误，说“无效或损坏的jar文件” 也试图通过命令提示符执行它给了我相同的错误

Step 1:create a .java file which contains my swing code 
Step 2:compile the .java file to .class file 
Step 3:create jar file using the command jar cf name.jar classname.class 
Step 4:open jar file using winrar archiever and modify manifest file by adding Main-class:classname 
Step 5:try to execute the jar file 

但上述步骤不工作，我不明白为什么？

我想另一件事太

Step 1:create a .java file which contains my swing code 
Step 2:compile the .java file to .class file 
Step 3:create jar file using the command jar cf name classname.class 
Step 4:open jar file using winrar archiever and modify manifest file by adding Main-class:classname 
Step 5:try to execute the jar file.In this case i can open my file through command prompt but not by double clicking. I tried to select javaw option through Open with option but it doesn't give any ouput(not even error) 

Answer 1

你可以试试：

java -cp name.jar Classname 

，并检查在命令提示符下的错误。

如果您的程序需要一些外部库，您可以在清单文件中提及它们。

Class-Path: lib/file1.jar lib/file2.jar 

其中lib位于jar文件所在的同一目录中。