With a regex of: [0-9][A-Z][a-z]


STARTING AT BEGINNING OF STRING

0aA
^    digit found, proceeding to look for capital letter
----
0aA
 ^   capital letter not found, continuing to scan
----
0aA
  ^  capital letter found, proceeding to look for lowercase letter
----
0aA
  ^  reached end of string

NO MATCH


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		With a regex of: (?=.*[0-9])(?=.*[A-z])(?=.*[a-z])


STARTING AT BEGINNING OF STRING

0aA
^    digit found, proceeding to look for capital letter


STARTING AT BEGINNING OF STRING

0aA
^    capital letter not found, continuing to scan
----
0aA
 ^   capital letter not found, continuing to scan
----
0aA
  ^  capital letter found, proceeding to look for lowercase letter


STARTING AT BEGINNING OF STRING

0aA
^    lowercase letter not found, continuing to scan
----
0aA
 ^   lowercase letter found


MATCH FOUND