Hi,

I am getting this error when executing the algorithm GoKrimp from the command line:

An error while trying to run the algorithm.
ERROR MESSAGE = java.lang.StringIndexOutOfBoundsException: String index out of range: 0
java.lang.StringIndexOutOfBoundsException: String index out of range: 0
at java.lang.String.charAt(String.java:658)
at ca.pfv.spmf.algorithms.sequentialpatterns.goKrimp.DataReader.readData_SPMF(DataReader.java:113)
at ca.pfv.spmf.algorithmmanager.descriptions.DescriptionAlgoGoKrimp.runAlgorithm(DescriptionAlgoGoKrimp.java:75)
at ca.pfv.spmf.gui.CommandProcessor.runAlgorithm(CommandProcessor.java:244)
at ca.pfv.spmf.gui.Main.processCommandLineArguments(Main.java:130)
at ca.pfv.spmf.gui.Main.main(Main.java:56)

This is the input file I am using, in case you want to reproduce the error:
link to the input file

I am thinking that the reason maybe that the sequences are very long. Does that make sense?

Best!

Hi,

I have checked. The issue is that there are two empty lines at the end of the file "inputSPMF.txt". Normally, it should not cause a problem but there was a bug in the code such that if there is some empty line, it would crash.

For now, you can just delete the empty lines and it will work. In the next release of SPMF the bug will have been fixed. ;-)

Thanks for reporting it.

Hi,

Many thanks for your help and for this wonderful framework!

You are welcome. Thanks for using it and glad it is useful ;-)

When using the Java substring() method, a subset of the character sequence can be extracted from a string. The substring index must be any value from 0 to the length of a string. The java.lang.StringIndexOutOfBoundsException thrown by String methods to indicate that the beginIndex is negative , or endIndex is larger than the length of this String object, or beginIndex is larger than endIndex.

How to solve the StringIndexOutOfBoundsException


Check the length of the string before using substring()
Exception handling using try...catch.

Good explanation!