[ANN] j2Perl 2.0 -- Allowing Java to access Perl code

Discussion in 'Perl Misc' started by http://vmdd.tech.mylinuxisp.com/catalog/, Mar 10, 2005.

  1. Source: http://vmdd.tech.mylinuxisp.co­m/catalog/
    (Follow "Java Add-ons" link)


    j2Perl 2.0 -- provides the ability to use Perl code in Java. This
    implementation is elegant and intuitive. Java is already powerful, but
    when combined with Perl, Java becomes turbo-charged.


    Usage:
    String ret;
    j2Perl pl = new j2Perl ("58"); //Load j2perl58.dll which
    was linked to
    perl58.dll


    ret = pl.eval ("mkdir 'h:/aa'");
    ret = pl.eval ("mkdir 'h:/aa'; mkdir 'h:/bb';");
    ret = pl.eval ("rmdir 'h:/aa'");
    ret = pl.eval ("rename 'h:/aa', 'h:/bb'");
    ret = pl.eval ("-e 'j2perl.h'"); //Test if the file exists

    ret = pl.eval ("-s 't:/a.txt'"); //Returns the file size
    in bytes
    ret = pl.eval ("-z 'j2perl.h'"); //Test if the file is
    empty
    ret = pl.eval ("-f 'j2perl.h'"); //Test if the file is a
    plain file
    ret = pl.eval ("-d 'j2perl.h'"); //Test if the file is a
    directory
    ret = pl.eval ("-T 't:/a.txt'"); //Test if the file is a
    text file
    ret = pl.eval ("-B 't:/a.txt'"); //Test if the file is a
    binary file
    ret = pl.eval ("-M 'h:/jdk-1_5_0-doc.zip'"); //Return age of
    the file
    (days)
    ret = pl.eval ("-A 'h:/jdk-1_5_0-doc.zip'"); //Same for access
    time
    (days)
    ret = pl.eval ("-M 'h:/jdk-1_5_0-doc.zip'"); //Same for inode
    change
    (days)
    ret = pl.eval ("sprintf ('%5d', 12);"); //ret = " 12"
    ret = pl.eval ("sprintf ('%5.5d', 12);"); //ret = "00012"
    ret = pl.eval ("sprintf ('this prints 2 decimals: %5.2f',
    1.23456)"); //ret = "this prints 2 decimals: 1.23";
    ret = pl.eval ("time;") //Returns the number of non-leap
    seconds since
    whatever time the system considers epoch


    ret = pl.source ("a.pl"); //Execute a.pl
    ret = pl.eval ("unlink 't:/a.txt'"); //Delete the specified
    file
    ret = pl.eval ("unlink "); //Delete group of files; Return
    number of
    files deleted
    ret = pl.eval ("$_='this will be translated'; tr/tw/TW/; $_");
    //ret =
    "This Will be TranslaTed";
    ret = pl.eval ("gmtime (time)"); //ret = "Wed Mar 2
    22:08:34 2005"
    ret = pl.eval ("localtime (time)"); //ret = "Wed Mar 2
    16:12:28 2005"
    ret = pl.eval ("hex '0x12'") //Convert hex to decimal; ret =
    "18";


    ret = pl.eval ("@arr = (tien, cam, banh)");
    ret = pl.eval ("@result = sort @arr"); //ret = "3";
    ret = pl.eval ("join (' ', @res)"); //ret = "banh cam tien";


    BE AWARE:
    If perl code has exception, then Java program will exit. Thus,
    make
    sure that your perl
    code is extremely robust.


    TRIAL:
    Before downloading j2Perl, please note that j2Perl is free for
    personal use. But, businesses,
    government agencies, and commercial use require licensing.
    Download
    now.
    http://vmdd.tech.mylinuxisp.com/catalog/, Mar 10, 2005
    #1
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  2. http://vmdd.tech.mylinuxisp.com/catalog/

    AC Guest

    If you expect this to be used for anything but toy programs, you'll have to
    do better than having the Java program exit if there is a Perl exception. I
    can't image any commercial program that could exist under those conditions.
    AC, Mar 10, 2005
    #2
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