Java 如何使用StringBuilder格式化

我从地理编码员那里得到了用户城市、州和国家。此格式如下所示

D/ProfileFrg: StateName: Pune, Maharashtra 411053
D/ProfileFrg: CountryName: India

我想使用StringBuilder将此字符串格式化为单行：Pune，Maharashtra，India，邮政编码将被删除

---

在我不熟悉StringBuilder之前，我还没有使用过它。有人能帮我解决这个问题吗？

我找到了替换字符串中数字的解决方案

   A better snippet would be as below.

String abc = "D/ProfileFrg: StateName: Pune, Maharashtra 411053" + "D/ProfileFrg: CountryName: India";
        /* split results with below output.
         * D/ProfileFrg StateName Pune, Maharashtra 411053D/ProfileFrg
         * CountryName India
         */
        String[] x = abc.split(":");

        String y = x[2] + ", " + x[4];
        /* y is Pune, Maharashtra 411053D/ProfileFrg, India */

        String[] z = y.split(" ");
        /* z has Pune, Maharashtra 411053D/ProfileFrg,
         * India
         */
        String finalValue = z[1] + " " + z[2] + ", " + z[5];
        System.out.println(finalValue);

String place = stateName + countryName;
        place  = place.replaceAll("[0-9]","");
        Log.d(TAG, place);

---

为什么您认为应该使用

StringBuilder

？而不是，比如说，

格式化程序

？或者

String.replace

{，

All

}？@AndyTurner如何在我的案例中使用它？要删除zipcode？java.lang.ArrayIndexOutOfBoundsException:length=1；索引=2@字符串y=x[2]+“，”+x[4]；请注意，我正在拆分abc文本，它是字符串abc=“D/ProfileFrg:StateName:Pune，Maharashtra 411053”+“D/ProfileFrg:CountryName:India”；它有两行：D/ProfileFrg:StateName:Pune，Maharashtra 411053和D/ProfileFrg:CountryName:India