NAME

PBJ::JNI::Native - Perl interface to Java JNI

SYNOPSIS

    # use through the PBJ::JNI::JavaVM module, not directly.
    use PBJ::JNI::JavaVM;

    my ($env, $jvm, @vm_opts);
    my ($cls, $fid, $mid, $out);

    # Create the Java VM
    @vm_opts = ("-Xrs", "-Xcheck:jni");
    $jvm = new PBJ::JNI::JavaVM();
    $env = $jvm->get_env(@vm_opts);

    $env->PushLocalFrame(16) == 0 or die;
    $cls = $env->FindClass("java/lang/System") or die;
    $fid = $env->GetStaticFieldID($cls, "out", "Ljava/io/PrintStream;") or die;
    $out = $env->GetStaticObjectField($cls, $fid) or die;
    $cls = $env->GetObjectClass($out) or die;
    $mid = $env->GetMethodID($cls, "println", "(I)V") or die;
    $env->CallVoidMethod($out, $mid, $env->cast("I", 12345));
    $env->PopLocalFrame(0);

DESCRIPTION

This is the native interface to JNI library. All function names are closely resembling the ones in the Java JNI library, with some necessary exceptions. This module should not be used directly. All subroutines are called via the PBJ::JNI::JNIEnv module.

EXPORT

None.

AUTHOR

Ping Liang, <ping@cpan.org>

SEE ALSO

perl.

COPYRIGHT and LICENSE

Copyright (c) 2001 Ping Liang All rights reserved.

THIS PROGRAM IS PROVIDED "AS IS" AND WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.

This program is licensed under the same terms as Perl itself. For more information see the README or Artistic files provided with the Perl distribution.