java - Number verification - if it is number, eponential values, it should pass otherwise it should fail -

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i using ^[-+]?[0-9]*\\.?[0-9]+([ee][-+]?[0-9]+)?$ regular expression, working fine cases. values 123e104 failing validate.

i guess 123e104 not exponential value. since 123e104 invalid exponential value. result should false or not match

123e+104 common way javascript , languages denote string representation of large exponent.


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