Regular expression for positive and a negative decimal value in java

Question

Regular expression for negative and positive decimal value so that can be matched with string using pattern and matcher for the correct implementation can any one will provide me with that

Answer 1

(\+|-)?([0-9]+(\.[0-9]+))

 

Answer 2

Try This! I've also used this way

"^-?[0-9]{1,12}(?:\.[0-9]{1,4})?$"

Rules:

ex: ^-?[0-9]{1,12}(?:\.[0-9]{1,4})?$
^           # Start of string
[0-9]{1,12} # Match 1-12 digits (i. e. 0-999999999999)
(?:         # Try to match...
\.          # a decimal point
[0-9]{1,4}  # followed by one to three digits (i. e. 0-9999)
)?          # ...optionally
$            # End of string

Answer 3

Try this:

[+-]?\d+\.\d+