Java代码美化不给最后的字符

Question

我尝试使用此代码创建代码美化器。但如果找到"}"，美化就会破裂。如何使用此代码修复它？

String code = "class Demo{public static void main(String[] args) {System.out.println(\"ABC\");if(\"A\".equals(\"A\")){return \"A\";}System.out.println(\"ABC\");}}";
String outtext = code;
String repfrom = "{";
String repto = "{\n";


Pattern p = Pattern.compile(repfrom, Pattern.LITERAL);
Matcher m = p.matcher(outtext);

int counter = 0;
StringBuffer sb = new StringBuffer();
while (m.find()) {
    counter++;
    m.appendReplacement(sb, repto + (tab += "\t"));
}
m.appendTail(sb);

String newtext = sb.toString().replace(";", ";\n" + tab);
String replace = "";
for (int i = 0; i < counter; i++) {
    replace = newtext.replace("}", "\b}");
}


System.out.println(replace);

我的输出是：

class Demo{
public static void main(String[] args) {
    System.out.println("ABC");
        if("A".equals("A")){
        return "A";
    }System.out.println("ABC");
    }