If you want a fairly literal translation: 
#!/usr/bin/perl
use strict;
use warnings FATAL => qw(all);

sub getBytes {
# split string into tokens
    my @tokens = split '-', (shift);

# map array of hex tokens to array of bytes
    my @bytearray = map (
        pack('C', hex2byte($_)), # see below
        @tokens
    );

    return \@bytearray;
}

sub hex2byte {
    my $b = hex(shift);
# deal with oversize values
    $b >>= 1 while ($b > 255);
    return $b;
}

# try
my $arrayref = getBytes('5e-ff-adad-23');

# check
foreach (@{$arrayref}) {
    print unpack ('C', $_)."\n";
}

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In reply to Re: Port Java code to Perl help by halfcountplus
in thread Port Java code to Perl help by jaakko_m

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