When using java 1.4 there is an option to use a 64bit java binary

java -help
:
  -d64
                  use a 64-bit data model if available
:

# java -version
java version "1.4.0-beta3"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.0-beta3-b78)
Java HotSpot(TM) Client VM (build 1.4.0-beta3-b78, mixed mode)


trying the following

# isalist
sparcv9+vis sparcv9 sparcv8plus+vis sparcv8plus sparcv8 sparcv8-fsmuld sparcv7 sparc
# java -d64
execv(): No such file or directory

gives the above error

a tail of the truss gives
resolvepath("/usr/j2se/bin/java", "/usr/j2se/bin/java", 1024) = 18
sysinfo(SI_ARCHITECTURE, "sparc", 12) = 6
access("/usr/j2se/lib/sparc/libjava.so", 0) Err#2 ENOENT
access("/usr/j2se/jre/lib/sparc/libjava.so", 0) = 0
execve("/usr/bin/sparcv9/java", 0x00028A60, 0xFFBFFEC0) Err#2 ENOENT
execv()write(2, " e x e c v ( )", 7) = 7
: write(2, " : ", 2) = 2
No such file or directorywrite(2, " N o s u c h f i l e".., 25) = 25

write(2, "\n", 1) = 1
llseek(0, 0, SEEK_CUR) = 8051
_exit(1)

execv(): No such file or directory
#
# which java
/usr/bin/java

from this we appear to need a binary
/usr/bin/sparcv9/java
which does not exist

if we create a link between
/usr/bin/sparcv9/java and /usr/j2se/bin/sparcv9/java it works

# java -d64 -version
java version "1.4.0-beta3"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.0-beta3-b78)
Java HotSpot(TM) 64-Bit Server VM (build 1.4.0-beta3-b78, mixed mode)