Java编译错误
我在尝试编译代码时遇到了问题：
D:\workspace>javac DbConnect.class
javac: invalid flag: DbConnect.class
Usage: javac <options> <source files>
use -help for a list of possible options
这就是我得到的。事实上，我从未添加过任何这些选项，而且它对我来说一直工作得很好。我可能做错了什么？
编辑：
谢谢大家，在办公室度过了漫长的一天:)
当我从 Eclipse 中触发代码时，代码工作正常。如果我输入 java DbConnect.class 我会收到此错误。
D:\workspace\GeoCoding\bin\de\bitmarck\bi>java DbConnect.class
Exception in thread "main" java.lang.NoClassDefFoundError: DbConnect/class
Caused by: java.lang.ClassNotFoundException: DbConnect.class
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
Could not find the main class: DbConnect.class. Program will exit.
它可以在 Eclipse 中运行，但似乎不喜欢手动启动。
类中有一个main。
我做错了什么？
I'm running into a problem while trying to compile my code:
D:\workspace>javac DbConnect.class
javac: invalid flag: DbConnect.class
Usage: javac <options> <source files>
use -help for a list of possible options
This is what i get. I actually have never added any of those options and it always worked fine for me. What could i have done wrong ?
EDIT:
Thanks guys it has been a long day at the office :)
The code works fine when i fire it from eclipse. If i type java DbConnect.class i get this Error.
D:\workspace\GeoCoding\bin\de\bitmarck\bi>java DbConnect.class
Exception in thread "main" java.lang.NoClassDefFoundError: DbConnect/class
Caused by: java.lang.ClassNotFoundException: DbConnect.class
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
Could not find the main class: DbConnect.class. Program will exit.
It works in Eclipse but it just doesn't seem to like being started manually.
There is a main in the class.
What am i doing wrong ?
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尝试
编译（文件扩展名是 .java 而不是 .class ）
或
运行它，如果这是您需要的
try
to compile ( the file extension is .java not .class )
or
to run it, if that's what you need
试试这个：
编译：
D:\workspace>javac DbConnect.java运行：
D:\workspace>java DbConnectTry this:
To Compile :
D:\workspace>javac DbConnect.javaTo Run:
D:\workspace>java DbConnect您尝试编译已经编译的类（它具有 .class 扩展名）。
You try to compile already compiled class (it has .class extension).