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  1. ,

    You try to parse a String that contains non-numeric characters to an int. The string must contain decimal characters only, optionally beginning with a + or - sign.

  2. ,

    Can occur when you try to convert a String to a numeric value but the String is not well formatted for the conversion.

Solutions on the web

via Coderanch by A. Wolf, 1 year ago
For input string: "4141"
via Coderanch by Richard Blaha, 1 year ago
via GitHub by xiushao1024
, 8 months ago
For input string: "1234567899999"
via GitHub by lukeis
, 2 years ago
java.lang.NumberFormatException: For input string: "4141"	at java.lang.NumberFormatException.forInputString(	at java.lang.Integer.parseInt(	at java.lang.Integer.parseInt(	at MyBot.logCount(	at MyBot.onPrivateMessage(	at org.jibble.pircbot.PircBot.handleLine(	at