I've changed ns_java significantly since I ported webmail, and the command interface no longer supports the original ns_java command. To emulate the old command using nsjava version 1.0.0 or greater, add the something like the following (untested) in webmail-defs.tcl
if ![string length [info commands ns_java]] {
proc ns_java { args } {
set i 0
if [string equal [lindex $args 0] -detach] {
incr i
}
foreach {class dummy method} [split [lindex $args $i] ::] break
set size [expr [llength $args] - $i - 1]
set iargs [nsjava::new {String[]} $size]
for {incr i} {$i < [llength $args]} {incr i} {
$iargs set $i [lindex $args $i]
}
nsjava::call $class [list $method {String[]}] $iargs
}
}
I will add this into the 3.2.x sources.