Some binaries that belong only in bin/sparcv9 wind up in jre/bin/sparcv9
as well:

% cd /usr/local/java/jdk1.4/solsparc

% ls jre/bin/sparc/native_threads
java keytool policytool rmiregistry tnameserv
java_vm orbd rmid servertool

% ls jre/bin/sparcv9/native_threads
appletviewer java javap oldjavac rmiregistry
extcheck javac jdb orbd serialver
idlj javadoc keytool policytool servertool
jar javah native2ascii rmic tnameserv
jarsigner javald oldjava rmid