problem in code

[kapilkumarnegi]

after executing the code its showing the error "String Index out of range " i could not find my fault so please help me

NOTE : before running the application copy MYFILE.TXT in the memory card and make empty files of BACKUP.TXT and TEMPERARY.TXT its important

FILES NEEDED ARE:
SOURCE FILE : process.java =>http://www.megafileupload.com/en/fil...cess-java.html
MYFILE.TXT : => http://www.megafileupload.com/en/fil...YFILE-TXT.html

please dont change the content of the file
please help me
thanks

[grahamhughes]

Looks like:

for (int i=0;i<str.length();i++)
{
     if((str.substring(i,i+4)).equalsIgnoreCase("()[]"))

String.substring() throws a StringIndexOutOfBoundsException if the endIndex is greater then the length of the string.

No need to use equalsIgnoreCase() when there is no case to match.

You might find it more efficient to use String.indexOf().

Graham.