Java懒惰匹配

Java懒惰匹配

public static void main(String args[]){
String regex = ".*?(?=\\[)";//区别".*(?=\\[)"，懒惰匹配
String str = "nihao[ma][This is Julie[";
Pattern pat = Pattern.compile(regex);
Matcher matcher = pat.matcher(str);
if (matcher.find()) {
System.out.println(matcher.group());
}
}