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how to convert an integer to packed decimal in java

Posted on 2009-03-30
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Last Modified: 2012-06-27
can some one help to provide sample code for converting integer to packed decimal
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Question by:rishirajm
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10 Comments
 
LVL 15

Expert Comment

by:fsze88
ID: 24025731
like this?
       System.out.println(get4DigitsFormat(4.323443));
        System.out.println(get4DigitsFormat(4.320));
        System.out.println(get4DigitsFormat(4));

    public  String get4DigitsFormat(double num) {
//        String format = "###,##0.0000";
        String format = "###,##0.####";
        DecimalFormat formatter = new DecimalFormat(format);
        num = (num == -0) ? Math.abs(num) : num; // to change -0 to 0
        return formatter.format(num);
    }
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Author Comment

by:rishirajm
ID: 24026069
I need a logic to convert an integer to packed decimal format. please follow the url 'http://www.3480-3590-data-conversion.com/article-packed-fields.html' for packed decimal. thanks
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LVL 86

Expert Comment

by:CEHJ
ID: 24026499
You might try the Microfocus COBOL library or JRecord:

http://jrecord.sourceforge.net/JRecord04.html#Header_10
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Author Comment

by:rishirajm
ID: 24027141
I do not have to work with cobol file, however I need to convert an integer defined in java to packed decimal.
 
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LVL 15

Expert Comment

by:fsze88
ID: 24027241
to simply way to using DecimalFormat and store the values into String object
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LVL 86

Expert Comment

by:CEHJ
ID: 24027945
>>I do not have to work with cobol file

You'll still probably be able to use the source
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LVL 86

Expert Comment

by:CEHJ
ID: 24029081
Try something like the following:
    public static int intToPackedDecimal(int val) {
        int result = 0xC;
        String sVal = Integer.toString(val);
        if (sVal.charAt(0) == '-') {
            sVal = sVal.substring(1);
            result = 0xD;
        }
        final int NYBBLE = 4;
        int nybbleIndex = 1;
        for(int i = sVal.length() -1;i >= 0;i--) {
            result |= ((sVal.charAt(i) - '0') & 0xF) << (NYBBLE * nybbleIndex++);
        }
        return result;
    }

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Accepted Solution

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rishirajm earned 0 total points
ID: 24046031
Thanks CEHJ for your quick response. I was able to find solution at http://sourceforge.net/projects/zdecimal
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LVL 86

Expert Comment

by:CEHJ
ID: 24047147
That's good, now you have two - as you can see mine works ;-)
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