Question

what does public String replaceAll(string replace) do?

(a) Replace all characters that matches pattern with a replacement string

(b) Replace first subsequence that matches pattern with a replacement string

(c) Replace all other than first subsequence of that matches pattern with a replacement string

(d) Replace every subsequence of the input sequence that matches pattern with a replacement string

This question was posed to me in class test.

This interesting question is from Regular Expression topic in section Regular Expressions of Java

Answer 1

Right choice is (d) Replace every subsequence of the input sequence that matches pattern with a replacement string

To elaborate: replaceAll method replaces every subsequence of the sequence that matches pattern with a replacement string.