FULL PRODUCT VERSION :
java version "1.7.0_03"
Java(TM) SE Runtime Environment (build 1.7.0_03-b05)
Java HotSpot(TM) Client VM (build 22.1-b02, mixed mode, sharing)

ADDITIONAL OS VERSION INFORMATION :
Microsoft Windows XP [Version 5.1.2600]

A DESCRIPTION OF THE PROBLEM :
Wildcard expansion doesn't work correctly for -classpath (-cp) parameter when only one entry is specified.


REGRESSION. Last worked in version 6u29

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Script (batch file) for running the test:

mkdir lib
javac test/*.java
jar cvf lib/a.jar test/A.class
jar cvf lib/b.jar test/B.class
java -cp "lib/*" test.B


EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
Following message should be on the output:

main() in class B executed

ACTUAL -
Following message appears on the output:

Error: Could not find or load main class lib.b.jar

ERROR MESSAGES/STACK TRACES THAT OCCUR :
Java launcher debug info when it doesn't work:

----_JAVA_LAUNCHER_DEBUG----
Launcher state:
        debug:on
        javargs:off
        program name:java
        launcher name:java
        javaw:off
        fullversion:1.7.0_03-b05
        dotversion:1.7
        ergo_policy:DEFAULT_ERGONOMICS_POLICY
Command line args:
argv[0] = java
argv[1] = -cp
argv[2] = lib/a.jar
argv[3] = lib/b.jar
argv[4] = test.B
JRE path is c:\Program Files\Java\jre7
jvm.cfg[0] = ->-client<-
jvm.cfg[1] = ->-server<-
jvm.cfg[2] = ->-hotspot<-
    name: -hotspot vmType: VM_ALIASED_TO alias: -client
jvm.cfg[3] = ->-classic<-
jvm.cfg[4] = ->-native<-
jvm.cfg[5] = ->-green<-
8371 micro seconds to parse jvm.cfg
Default VM: client
JVM path is c:\Program Files\Java\jre7\bin\client\jvm.dll
JRE path is c:\Program Files\Java\jre7
CRT path is c:\Program Files\Java\jre7\bin\msvcr100.dll
8795 micro seconds to LoadJavaVM
JavaVM args:
    version 0x00010002, ignoreUnrecognized is JNI_FALSE, nOptions is 5
    option[ 0] = '-Dsun.java.launcher.diag=true'
    option[ 1] = '-Djava.class.path=.'
    option[ 2] = '-Djava.class.path=lib/a.jar'
    option[ 3] = '-Dsun.java.command=lib/b.jar test.B'
    option[ 4] = '-Dsun.java.launcher=SUN_STANDARD'
59450 micro seconds to InitializeJVM
Main class is 'lib/b.jar'
App's argc is 1
    argv[ 0] = 'test.B'
Error: Could not find or load main class lib.b.jar
java.lang.ClassNotFoundException: lib.b.jar
        at java.net.URLClassLoader$1.run(Unknown Source)
        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)
        at sun.launcher.LauncherHelper.checkAndLoadMain(Unknown Source)


Java launcher debug info when it works:

----_JAVA_LAUNCHER_DEBUG----
Launcher state:
debug:on
javargs:off
program name:java
launcher name:java
javaw:off
fullversion:1.7.0_03-b05
dotversion:1.7
ergo_policy:DEFAULT_ERGONOMICS_POLICY
Command line args:
argv[0] = java
argv[1] = -cp
argv[2] = lib/*;
argv[3] = test.B
JRE path is c:\Program Files\Java\jre7
jvm.cfg[0] = ->-client<-
jvm.cfg[1] = ->-server<-
jvm.cfg[2] = ->-hotspot<-
    name: -hotspot vmType: VM_ALIASED_TO alias: -client
jvm.cfg[3] = ->-classic<-
jvm.cfg[4] = ->-native<-
jvm.cfg[5] = ->-green<-
322 micro seconds to parse jvm.cfg
Default VM: client
JVM path is c:\Program Files\Java\jre7\bin\client\jvm.dll
JRE path is c:\Program Files\Java\jre7
CRT path is c:\Program Files\Java\jre7\bin\msvcr100.dll
5365 micro seconds to LoadJavaVM
Expanded wildcards:
    before: "lib/*;"
    after : "lib/a.jar;lib/b.jar;"
JavaVM args:
    version 0x00010002, ignoreUnrecognized is JNI_FALSE, nOptions is 5
    option[ 0] = '-Dsun.java.launcher.diag=true'
    option[ 1] = '-Djava.class.path=.'
    option[ 2] = '-Djava.class.path=lib/a.jar;lib/b.jar;'
    option[ 3] = '-Dsun.java.command=test.B'
    option[ 4] = '-Dsun.java.launcher=SUN_STANDARD'
51245 micro seconds to InitializeJVM
Main class is 'test.B'
App's argc is 0
13358 micro seconds to load main class
----_JAVA_LAUNCHER_DEBUG----



REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------
File test/A.java:
---
package test;

class A {
}
---

File test/B.java:
---
package test;

class B {
    public static void main(String[] args) {
        System.out.println("main() in class B executed");
    }
}
---

---------- END SOURCE ----------

CUSTOMER SUBMITTED WORKAROUND :
Command line for executing the code must be modified e.g. like following:

java -cp "lib/*;" test.B

Please note that instead of "*" is there "*;". Then execution works as expected.