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Questions - numberformatexception

I can't use NumberFormatExeption. The program should continue even if the user input a string or non-number

Guessing the number import java.util.*; public class LabExer5A { public static void main(String args[]) { Scanner Input = new Scanner (System.in); System.out.println(&...
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paulo saim

java

if-statement

try-catch

numberformatexception

try-catch-finally

Votes: 0

Answers: 1

Latest Answer

nextInt() actually throws InputMismatchException when you input other data type so you can directly use the catch for InputMismatchException and you should add Input.next() so that the scanner will ta...
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buzzbuzz

NumberFormatException: For input string: "Regular (Php 100)"

The program is supposed to compute the integer indicated for the radio button, checkbox, and combo box, but it always returns an error when I submit it. Exception in thread "AWT-EventQueue-0"...
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SeanCry

java

swing

numberformatexception

jcheckbox

jradiobutton

Votes: 0

Answers: 1

Latest Answer

You need to pass a valid number. Else you would get such NumberFormatException. Regular (Php 100) is not a valid number.
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Jay

Error when trying to read in from a text file. including InvocationTargetException, .RuntimeException and NumberFormatException

Hi to print out values from values from a file but I am getting this error. Can anyone help point out the problem. I am using a pre made class for the exact format of the data from the file using toSt...
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Alwin Binu

java

runtimeexception

numberformatexception

invocationtargetexception

Votes: 0

Answers: 0

Java exception in thread "AWT-EventQueue-0" java.lang.NumberFormatException: For input string: ""

My code is throwing an expected error too early. I was trying to test input validation, but I'm throwing an error before validation occurs. When I tried restoring my code to a previous version that wo...
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Recursion

java

swing

awt

numberformatexception

Votes: 0

Answers: 1

Latest Answer

Bottom line: You need to validate your input. To do this, I can think of a few options: Option 1: Use Scanner to check if the input is numeric Scanner scanner = new Scanner(playerGuessField.getText()....
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hfontanez

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