jar 文件运行异常

我的测试JAVA类内容如下:
/**
* @author Administrator
*
* TODO To change the template for this generated type comment go to
* Window - Preferences - Java - Code Style - Code Templates
*/
public class Test {
public Test(){}

public static void main(String[] args) {
//BarChartDemo bcd = new BarChartDemo();
System.out.println("AAAA");
}
}


我使用javac Test.java 编译通过 ,并生成CLASS文件
我使用java  Test 正常输出

然后,使用jar -cvf test.jar Test.class  生成test.jar包
然后手工修改MANIFEST.MF文件,增加 Main-Class:Test一行
Manifest-Version: 1.0
Created-By: 1.4.2_03 (Sun Microsystems Inc.)
Main-Class:Test

然后,执行一:
java test.jar
结果:
Exception in thread "main" java.lang.NoClassDefFoundError: test/jar

执行二:
java -jar test.jar
结果:
Exception in thread "main" java.io.IOException: invalid header field
        at java.util.jar.Attributes.read(Attributes.java:387)
        at java.util.jar.Manifest.read(Manifest.java:167)
        at java.util.jar.Manifest.<init>(Manifest.java:52)
        at java.util.jar.JarFile.getManifest(JarFile.java:158)

执行三:
set path=%path%;%java_home%\bin
set classpath=".;%java_home%\lib"
java -jar test.jar
结果:
Exception in thread "main" java.io.IOException: invalid header field
        at java.util.jar.Attributes.read(Attributes.java:387)
        at java.util.jar.Manifest.read(Manifest.java:167)
        at java.util.jar.Manifest.<init>(Manifest.java:52)
        at java.util.jar.JarFile.getManifest(JarFile.java:158)

执行四:
java -classpath "%classpath%;.;c:\cmdTest\test.jar" test
结果:
Exception in thread "main" java.lang.NoClassDefFoundError: test (wrong name: Tes
t)
        at java.lang.ClassLoader.defineClass0(Native Method)
        at java.lang.ClassLoader.defineClass(ClassLoader.java:537)
        at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:12
3)
        at java.net.URLClassLoader.defineClass(URLClassLoader.java:251)
        at java.net.URLClassLoader.access$100(URLClassLoader.java:55)
        at java.net.URLClassLoader$1.run(URLClassLoader.java:194)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(URLClassLoader.java:187)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:289)
        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:274)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:235)
        at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:302)

请各位指点一下,我错在哪里?
谢谢;

我的环境变量里:path,classpath,java_home都设置好了