public class jiaodashu
{
public static void main(String[] args)
{
String str = "abcde";
StringBuilder str0 = new StringBuilder;
str0.append(str); //将str转化为StringBuildeer类型
String str1 = str0.toString(); //将str0转化为String类型
str.remove("a");//删除a
}
}
java中String与StringBuilder的相互转换
原文：https://www.cnblogs.com/tianyb/p/12755379.html