public class Main {

    public static void main(String[] args) {

        String[] fields = { "name", "position", "salary" };

        String table = "employee";

        String insert = buildInsertSql(table, fields);

        System.out.println(insert);

        String s = "INSERT INTO employee (name, position, salary) VALUES (?, ?, ?)";

        System.out.println(s.equals(insert) ? "测试成功" : "测试失败");

    }

    static String buildInsertSql(String table, String[] fields) {

        String str = String.join(", ", fields);

        return "INSERT INTO employee (" + str + ") VALUES (?, ?, ?)";

    }

}