Integer.parse(String str) java.lang.NumberFormatException: Errors

java string exception integer numberformatexception
manic bubble picture manic bubble · Aug 6, 2015 · Viewed 15.6k times · Source

I keep getting number format expectations, even though I'm trimming the strings and they don't contain non numerical characters bizarrely it works for some numbers and not others. Below is an example of a string I get number format exception for. Also, any string starting with 0 e.g "0208405223", is returned 208405223, there's no zero anymore is that supposed to happen?

String n="3020857508";
Integer a = Integer.parseInt(n.trim());
System.out.println(a);

This is the exception:

Exception in thread "main" java.lang.NumberFormatException: For input string: "3020857508"
    at java.lang.NumberFormatException.forInputString(NumberFormatException.java:65)
    at java.lang.Integer.parseInt(Integer.java:583)
    at java.lang.Integer.parseInt(Integer.java:615)
    at JavaBeans.Main.main(Main.java:15)

Answer

Bohemian picture Bohemian · Aug 6, 2015

The largest number parseable as an int is 2147483647 (231-1), and the largest long is 9223372036854775807 (263-1), only about twice as long.

To parse arbitrarily long numbers, use:

import java.math.BigInteger;

BigInteger number = new BigInteger(str);

Related questions

Error java.lang.NumberFormatException: For input string: ""

I'm trying to read this file C101 VEHICLE NUMBER CAPACITY 25 200 CUSTOMER CUST NO. XCOORD. YCOORD. DEMAND READY TIME DUE DATE SERVICE TIME 0 40 50 0 0 1236 0 1 45 68 10 912 967 90 2 45 70 30 825 870 90 3 42 66 10 65 146 90 4 42 68 10 727 782 90 5 42 65 10 15 67 90 6 40 69 20 621 702 90 7 40 66 20 170 225 90 8 38 68 20 255 324 90 But when I read the file, the program throws me this exception: Exception in thread "main" java.lang.…

Read More
Java only get Exception name without StackTrace

how can I get the exception name without getting the stack trace? I am using exception.toString() to convert the thrown exception into a string, but I only want the exception name likeNullPointerException and not the entire stack trace. How …

Read More
How do I convert a String to an int in Java?

How can I convert a String to an int in Java? My String contains only numbers, and I want to return the number it represents. For example, given the string "1234" the result should be the number 1234.

Read More