private void writeToCSV(List<Employee> empList) {
    try(BufferedWriter writer = new BufferedWriter(new OutputStreamWriter(
                new FileOutputStream(System.getProperty("java.io.tmpdir")+"Test.csv"), "UTF-8"))) {
        empList.forEach(eachEmployee -> {
            StringBuilder builder = new StringBuilder();
            builder.append(eachEmployee.getName());
            builder.append(CSV_SEPARATOR);
            builder.append(eachEmployee.getID());
            builder.append(CSV_SEPARATOR);
            builder.append(eachEmployee.getJoiningDate());
            writer.write(builder.toString());
            writer.newLine();
        });
    }
}