Answer by Wiktor Stribiżew for How do we remove special characters from a string from a particular position in java?

You can use

inputString.replaceAll("(\\G(?!^)|name=\")([^\"\\p{Punct}]*)\\p{Punct}(?=[^\"]*\")", "$1$2")

See the regex demo

The regex matches

• (\G(?!^)|name=\") - Group 1: name=" or the end of the preceding successful match
• ([^\"\p{Punct}]*) - Group 2: any zero or more chars other than " and punctuation chars
• \p{Punct} - any punctuation chars
• (?=[^\"]*\") - immediately from the current position to the right, there must be any zero or more chars other than " and then a " char.