如何以合适的方式显示时间(分钟:秒)？

const currentTime = new Date();
const timeString = currentTime.toLocaleTimeString().split(':');
const minutes = timeString[1];
const seconds = timeString[2];
const formattedTime = minutes + ':' + seconds;
console.log(formattedTime);

<div id="time-container"></div>

<script>
function updateTime() {
  const currentTime = new Date();
  const minutes = currentTime.getMinutes();
  const seconds = currentTime.getSeconds();
  const formattedTime = minutes + ':' + seconds;
  document.getElementById('time-container').textContent = formattedTime;
}

setInterval(updateTime, 1000);
</script>

<style>
#time-container {
  font-size: 24px;
  text-align: center;
  padding: 10px;
  background-color: #f2f2f2;
}
</style>

import java.text.SimpleDateFormat;
import java.util.Date;

TextView timeTextView = findViewById(R.id.timeTextView);
SimpleDateFormat sdf = new SimpleDateFormat("mm:ss");
String formattedTime = sdf.format(new Date());
timeTextView.setText(formattedTime);