How to parse number string containing commas into an integer in java?

java exception number-formatting
vivek_jonam picture vivek_jonam · Aug 15, 2012 · Viewed 81.7k times · Source

I'm getting NumberFormatException when I try to parse 265,858 with Integer.parseInt().

Is there any way to parse it into an integer?

Answer

Tomasz Nurkiewicz picture Tomasz Nurkiewicz · Aug 15, 2012

Is this comma a decimal separator or are these two numbers? In the first case you must provide Locale to NumberFormat class that uses comma as decimal separator:

NumberFormat.getNumberInstance(Locale.FRANCE).parse("265,858")

This results in 265.858. But using US locale you'll get 265858:

NumberFormat.getNumberInstance(java.util.Locale.US).parse("265,858")

That's because in France they treat comma as decimal separator while in US - as grouping (thousand) separator.

If these are two numbers - String.split() them and parse two separate strings independently.

Related questions

How do you assert that a certain exception is thrown in JUnit 4 tests?

How can I use JUnit4 idiomatically to test that some code throws an exception? While I can certainly do something like this: @Test public void testFooThrowsIndexOutOfBoundsException() { boolean thrown = false; try { foo.doStuff(); } catch (IndexOutOfBoundsException e) { thrown = true; } assertTrue(thrown); } I …

Read More
How to solve java.lang.NoClassDefFoundError?

I've tried both the example in Oracle's Java Tutorials. They both compile fine, but at run-time, both come up with this error: Exception in thread "main" java.lang.NoClassDefFoundError: graphics/shapes/Square at Main.main(Main.java:7) Caused by: java.…

Read More
What could cause java.lang.reflect.InvocationTargetException?

Well, I've tried to understand and read what could cause it but I just can't get it: I have this somewhere in my code: try{ .. m.invoke(testObject); .. } catch(AssertionError e){ ... } catch(Exception e){ .. } Thing is that, when it tries …

Read More