NullPointerException with JTable

J2SE Version (please include all output from java -version flag) :
    java version "1.5.0-beta"
    Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0-beta-b32)
    Java HotSpot(TM) Client VM (build 1.5.0-beta-b32, mixed mode)

Does this problem occur on J2SE 1.3 or 1.4.x? Yes / No (pick one)
    No (L & F and Sun Java Desktop System)

Operating System Configuration Information (be specific) :
    (Linux) Sun Java Desktop System, 2003

Hardware Configuration Information (be specific) :

    Platform configuration :

    CPU: Intel 32bit Single Processor
    Processor Speed: 1893 MHz

Bug Description :
    java.lang.NullPointerException

Steps to Reproduce (be specific) :
    Compile and execute the two source codes attached.
    See the nullPinterException related to the JTable
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