Extracting string from within round brackets in Java with regex

Question

I\'m trying to extract a string from round brackets.
Let\'s say, I have John Doe (123456789) and I want to output the string 123456789 only.

Answer 1

this works for me :

@Test
public void myTest() {
    String test = "test (mytest)";
    Pattern p = Pattern.compile("\\((.*?)\\)");
    Matcher m = p.matcher(test);

    while(m.find()) {
        assertEquals("mytest", m.group(1));
    }
}