如何在java中查找给定代码段的控制结构中的条件数

import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class ControlStructureAnalyzer {
    public static void main(String[] args) {
        String code = "if (condition1) {\n" +
                      "    // code block\n" +
                      "} else if (condition2) {\n" +
                      "    // code block\n" +
                      "} else {\n" +
                      "    // code block\n" +
                      "}";

        int conditionCount = countConditions(code);
        System.out.println("条件数：" + conditionCount);
    }

    private static int countConditions(String code) {
        int count = 0;
        Pattern pattern = Pattern.compile("(if|else if)\\s*\\(.*?\\)");
        Matcher matcher = pattern.matcher(code);

        while (matcher.find()) {
            count++;
        }

        return count;
    }
}