Java NumberFormatException Example

This Java example demonstrates the usage of java.lang.NumberFormatException class with an example. This NumberFormatException occurs when a string is parsed to any numeric variable.

From javaDoc - The NumberFormatException exception thrown to indicate that the application has attempted to convert a string to one of the numeric types, but that the string does not have the appropriate format.

package com.javaguides.corejava;

public class NumberFormatExceptionExample {

    public static void main(String[] args) {

        String str1 = "100ABCD";
        try {
            int x = Integer.parseInt(str1); // Converting string with inappropriate format
            int y = Integer.valueOf(str1);
        } catch (NumberFormatException e) {
            System.err.println("NumberFormatException caught!");
            e.printStackTrace();
        }
    }
}

Output:

NumberFormatException caught!
java.lang.NumberFormatException: For input string: "100ABCD"
	at java.lang.NumberFormatException.forInputString(NumberFormatException.java:65)
	at java.lang.Integer.parseInt(Integer.java:580)
	at java.lang.Integer.parseInt(Integer.java:615)
	at com.javaguides.corejava.NumberFormatExceptionExample.main(NumberFormatExceptionExample.java:9)