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Solutions on the web

via Coderanch by Alix Ollivier, 1 year ago
For input string: "12+6"
via Coderanch by Mike Oxenfire, 1 year ago
For input string: "shirt "
via Apache's JIRA Issue Tracker by Hao Xia, 1 year ago
via ws-users by Jochen Wiedmann, 2 years ago
For input string: "Client"
java.lang.NumberFormatException: For input string: "12+6" at java.lang.NumberFormatException.forInputString(NumberFormatException.java:48) at java.lang.Integer.parseInt(Integer.java:458) at java.lang.Integer.parseInt(Integer.java:499) at JavaCalculatorMain.main(JavaCalculatorMain.java:17)