regex - Regular expression illegal character in Java -

i've been looking through internet after big headache, cannon't find why regular expression wrong:

"\"\w*&&[\p{punct}]\"["+sepchar+"]\"\w*&&[\p{punct}]\""

i'm trying read master data file following pattern (quotes included):

"textvalue":"textvalue":"textvalue"

and split each line regular expression above.

so, example:

"hello:john":"hello:world":"hello:mark"

will splitted into:

{"hello:john", "hello:world", "hello:mark"}

the backwards slash escape character in java. need use 2 backslashes \\ include single backslash in regex.

try:

"\"\\w*&&[\\p{punct}]\"["+sepchar+"]\"\\w*&&[\\p{punct}]\""

Error