while reading .txt file in java getting ArrayIndexOutOfBoundsException

Question

try (BufferedReader br = new BufferedReader(new FileReader("/home/modi/Desktop/hbaseoff/mobiledata.txt")))
        {

            String sCurrentLine;

            while ((sCurrentLine = br.readLine()) != null) {
                String[] values = sCurrentLine.split("\t");
System.out.println(values[0]+"-"+values[1]+"\t"+values[2]+"\t"+values[3]+"\t"+values[4]);
}

        } catch (IOException e) {
            e.printStackTrace();
        }

output:

20150320-9876543217 16  45  22
20150320-8876543218 45  11  13
20150320-8876543219 49  15  16
20150321-9876543210 16  45  22
20150321-9876543211 45  11  13

Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: 1 at Jclass.main(Jclass.java:18)

check how many tabulators the lines do have. They have to have at least 4 or you get your exception — SomeJavaGuy
– SomeJavaGuy, Commented Apr 7, 2016 at 6:11
To help you with this error, you have to post the file's content. I assume, that the format isn't the same in this row. There my be value[4] missing. — Thomas Böhm
– Thomas Böhm, Commented Apr 7, 2016 at 6:11
Check your input data and also debug in while loop. There should be some data which does have required index. Also you can do a length check on Array before printing. — Jeet
– Jeet, Commented Apr 7, 2016 at 6:11

Scary Wombat · Accepted Answer · 2016-04-07 06:16:17Z

2

Because there are only 4 tab delimitered values

try

System.out.println(values[0]+"-"+values[1]+"\t"+values[2]+"\t"+values[3]);

Personally I would put this in a loop

for (String val : values) {
   System.out.print (val + "\t");
}
System.out.println ();

edited Apr 7, 2016 at 6:16

answered Apr 7, 2016 at 6:11

Scary Wombat

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10 Comments

Prasann Modi Over a year ago

my input in file is:

Prasann Modi Over a year ago

20150320 9876543217 16 45 22 20150320 8876543218 45 11 13 20150320 8876543219 49 15 16 20150321 9876543210 16 45 22 20150321 9876543211 45 11 13

Scary Wombat Over a year ago

@PrasannModi That is different to what you posted above. Anyway try using a loop as in my answer. Could also be caused by a line with blanks on it

Prasann Modi Over a year ago

my input is: 20150320 9876543217 16 45 22 20150320 8876543218 45 11 13 20150320 8876543219 49 15 16 20150321 9876543210 16 45 22 20150321 9876543211 45 11 13 and output : 20150320-9876543217 16 45 22 20150320-8876543218 45 11 13 20150320-8876543219 49 15 16 20150321-9876543210 16 45 22 20150321-9876543211 45 11 13

Scary Wombat Over a year ago

Looks good then. If you are still having an error, then maybe due to a blank line

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