A Customer migrate to 1.4.2_15( or later).
They have found NullPointerException come to occur.

java.lang.NullPointerException
at com.sun.jndi.dns.Resolver.query(Resolver.java:64)
at com.sun.jndi.dns.Resolver.findSoa(Resolver.java:135)
at com.sun.jndi.dns.DnsContext.isZoneCurrent(DnsContext.java:892)
at com.sun.jndi.dns.DnsContext.getNameNode(DnsContext.java:806)
at com.sun.jndi.dns.DnsContext.c_list(DnsContext.java:298)
at com.sun.jndi.toolkit.ctx.ComponentContext.p_list(ComponentContext.java:555)
at com.sun.jndi.toolkit.ctx.PartialCompositeContext.list(PartialCompositeContext.java:273)
at com.sun.jndi.toolkit.ctx.PartialCompositeContext.list(PartialCompositeContext.java:262)
at javax.naming.InitialContext.list(InitialContext.java:387)
at TestNPE142.main(TestNPE142.java:74)


CONFIGURATION :
 Solaris10/jdk1.4.2_15 - 1.4.2_20ea

NOTE :
This exception did not occur in 1.4.2_14 and earlier.

REPRODUCE :
 1. Edit the attached TestNPE142.java for your environmet compile
    (IP address of DNS and domainname should be changed.)
 2. Edit the attached run3.csh and invoke.
    (JDK path should be changed.)

We can always reproduce.