Java中字符串中连续相同字符去重方法

public class Test {
public static void main(String[] args) {
String str = "111111kakkkkkkkkkkwwwaacbbdAAA";
String s = "";
int count=0;
Matcher m = Pattern.compile("(\\w)\\1*").matcher(str);
while (m.find()) {
s += m.group().subSequence(0, 1);
}
System.out.println(s);
}
}