String.formatでjson文字列作成

public class Main {
    public static void main(String[] args) throws Exception {
        // Sample data
        String name = "John";
        int age = 30;
        String city = "New York";

        // Format JSON string using String.format
        String jsonString = String.format("{\"name\":\"%s\", \"age\":%d, \"city\":\"%s\"}", name, age, city);

        // Print formatted JSON string
        System.out.println(jsonString);
    }
}