public class Test1 {
public static void main(String[] args) {
String str="刘德华_java程序员_布鲁明顿";
char[] str1=str.toCharArray();
StringBuilder sb=new StringBuilder();
sb.append(str1);
sb.delete(8, 11);
sb.insert(8, "高级攻城狮");
sb.replace(4, 8, "ios");
sb.reverse();
String s1=sb.toString().toLowerCase();
System.out.println(s1);
}
}