Compiler crashed when I tried to compile a directory.
Accidentally I used 'mkdir <filename>' insteadof 'touch <filename>'. I tried compiling the filename and compiler crashed.
<How-to>
bash-3.00$ mkdir Foo.java
bash-3.00$ javac Foo.java
An exception has occurred in the compiler (1.6.0-beta2). Please file a bug at the Java Developer Connection (http://java.sun.com/webapps/bugreport) after checking the Bug Parade for duplicates. Include your program and the following diagnostic in your report. Thank you.
java.lang.IllegalArgumentException: directories not supported
        at com.sun.tools.javac.util.DefaultFileManager$RegularFileObject.<init>(DefaultFileManager.java:1023)
        at com.sun.tools.javac.util.DefaultFileManager$RegularFileObject.<init>(DefaultFileManager.java:1018)
        at com.sun.tools.javac.util.DefaultFileManager.getJavaFileObjectsFromFiles(DefaultFileManager.java:861)
        at com.sun.tools.javac.util.DefaultFileManager.getJavaFileObjectsFromStrings(DefaultFileManager.java:160)
        at com.sun.tools.javac.main.Main.compile(Main.java:322)
        at com.sun.tools.javac.main.Main.compile(Main.java:253)
        at com.sun.tools.javac.main.Main.compile(Main.java:244)
        at com.sun.tools.javac.Main.compile(Main.java:69)
        at com.sun.tools.javac.Main.main(Main.java:54)
bash-3.00$
</How-to>

<java-version>
bash-3.00$ java -version
java version "1.6.0-beta2"
Java(TM) SE Runtime Environment (build 1.6.0-beta2-b85)
Java HotSpot(TM) Client VM (build 1.6.0-beta2-b85, mixed mode)
</java-version>