This error is probably caused due to my different system locale. I use DOT as decimal separator.
I tried to set a default locale when my application starts but I'm getting the same exception.
Locale.setDefault(Locale.US);
Stacktrace:
Caused by: java.lang.NumberFormatException: For input string: "6,2" at
sun.misc.FloatingDecimal.readJavaFormatString(FloatingDecimal.java:2043) at
sun.misc.FloatingDecimal.parseFloat(FloatingDecimal.java:122) at
java.lang.Float.parseFloat(Float.java:451)

It looks like your code is using Float.parseFloat. That doesn't use any locale settings. From the docs:
Returns a new float initialized to the value represented by the specified
String, as performed by thevalueOfmethod of class Float.
And valueOf has a detailed grammar, and includes this:
To interpret localized string representations of a floating-point value, use subclasses of
NumberFormat.
So basically, your default locale is irrelevant here. If you want to parse "6,2" you should be using a NumberFormat with a locale using comma as a decimal separator.
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