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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 Mark Hughes, 1 year ago
For input string: "3 "
via GitHub by yoav-zibin
, 2 years ago
For input string: "3249660004697307829"
via Google Groups by Puja Gupta, 11 months ago
For input string: "--conf"
java.lang.NumberFormatException: For input string: "'d"	at java.lang.NumberFormatException.forInputString(	at java.lang.Integer.parseInt(	at com.test.utils.StringUtils.parseHexString(	at com.test.utils.Crypto.decode(	at	at$1300(	at$