JAVA: 获取带毫秒的时间字符串

package com.tju.KafkaReceiver;

import java.text.SimpleDateFormat;

public class Test {
	
	public static String getTime(long timestamp) {
		SimpleDateFormat format = new SimpleDateFormat( "yyyy-MM-dd HH:mm:ss.SSS" );

	

		String d = format.format(timestamp);
		return d;
	}

	public static void main(String[] args) {
		long timestamp=1617069926023L;
		String str=getTime(timestamp);
		System.out.println(str);

	}

}