Exception in thread “main” java.lang.NumberFormatException: For input string

Question

I am using the Netbeans IDE for my code. I am getting this error when I try to run it:"

Exception in thread "main" java.lang.NumberFormatException: For input string: "8589.416,5468.2407,4263.4077,4064.9358,1997.893,5282.325,2169.72,2773.4211,7526.386,4607.6763,2598.06,1522.6462,1300.5988,1181.63,Tumor"
    at sun.misc.FloatingDecimal.readJavaFormatString(FloatingDecimal.java:1250)
    at java.lang.Double.parseDouble(Double.java:540)
    at Preprocessing.Newsvm_scale.run(Newsvm_scale.java.java:150)
    at Preprocessing.Newsvm_scale.main(Newsvm_scale.java.java:332)

I keep in mind that the other similar questions here couldn't helped me since I have a different code. My code is below. If anyone can point me in the right direction I will be incredibly grateful. Thanks.

Answer 1

The StringTokenizer method has set one long string to the value st, which is not being broken up. So when the Double Parse method is being called. It throws a Number format exception, because it is trying to convert that string to a double. You need to specify that commas separate the numbers when calling the StringTokenizer method. Feel free to ask if you like some more assistance.