How to check the input format in java

Question

i need to check whether the number input is in decimal format or in floating point format in java coding.

in simple terms how would this check be possible?

here is one way to do that http://stackoverflow.com/a/38714547/43848 — artem, Aug 23 '16 at 01:01
Possible duplicate of [How to check whether input value is integer or float?](http://stackoverflow.com/questions/4727569/how-to-check-whether-input-value-is-integer-or-float) — Loknar, Aug 23 '16 at 01:42
decimal format - a number that is either positive or negative but is to the base 10. for example 20. — RS786, Aug 23 '16 at 13:07

score 0 · Answer 1 · answered Aug 23 '16 at 01:39

0

Scanner scanner  = new Scanner(System.in);
if(scanner.hasNextDouble())
     //double stuff here
else if (scanner.hasNextFloat())
     //Float stuff here

answered Aug 23 '16 at 01:39

Falla Coulibaly

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so how would i write this out in terms of explaining the code? – RS786 Aug 23 '16 at 13:04
What do you mean by 'explaining the code'? The sample code I provided is pretty self-explanatory I believe. – Falla Coulibaly Aug 23 '16 at 17:25

score 0 · Answer 2 · answered Aug 23 '16 at 02:11

Here is a small method I quickly whipped up that you may find interesting....

public static boolean isFloatingPoint(Object number) {
    String type = number.getClass().getSimpleName().toUpperCase();
    return type.equals("FLOAT") || type.equals("DOUBLE");
}

You can use the same concept to determine any Object passed to your method, perhaps even:

public static boolean isJButton(Object component) {
    String type = component.getClass().getSimpleName().toUpperCase();
    return type.equals("JBUTTON");
}

How to check the input format in java

2 Answers2