System.out.println(sdf.format(newDate()));//获取当前时间戳,也可以是你自已给的一个随机的或是别人给你的时间戳(一定是long型的数据)longtimeStamp=System.currentTimeMillis();//这个是你要转成后的时间的格式SimpleDateFormat sdff=newSimpleDateFormat("yyyy-MM-dd HH:mm:ss");// 时间戳转换成时间St...
importjava.sql.Timestamp;publicclassExample{publicstaticvoidmain(String[]args){Timestamptimestamp=newTimestamp(System.currentTimeMillis());intyear=timestamp.getYear()+1900;// 获取年份intmonth=timestamp.getMonth()+1;// 获取月份(注意:月份是从0开始的)intday=timestamp.getDate();// 获取日期inthou...
以下是获取数据库时间的代码: try{Connectionconnection=DriverManager.getConnection(url,username,password);Statementstatement=connection.createStatement();Stringsql="SELECT NOW() as current_time";ResultSetresultSet=statement.executeQuery(sql);if(resultSet.next()){TimestampdbTime=resultSet.getTimestamp("current...
AnInstantis a unique point in the timeline and is mainly used to represent timestamps in Java 8 and higher. You can use this class to get the current moment from the system clock. Alternatively, you can also convert an instance ofjava.sql.TimestamptoInstantas shown below: Timestamptimest...
package com.framework.util; import java.sql.Timestamp; import java.text.DateFormat; import java.text.ParseException; import java.text.SimpleDateFormat; import java.time.Instant; import java.time.LocalDateTime; import java.time.ZoneId; import java.time.format.DateTimeFormatter; import java.util.ArrayL...
publicclassNullPointTest{ publicstaticvoidmain%28String[]args%29{ Useruser=null; System.out.println%28user.getAge%28%29%29;//空指针异常 } } 2. 日期YYYY格式设置的坑 日常开发,经常需要对日期格式化,但是呢,年份设置为YYYY大写的时候,是有坑的哦。
{/** 生成一个唯一的 Bucket 名称 */publicstaticStringgenerateUniqueBucketName(String prefix){// 获取当前时间戳Stringtimestamp=String.valueOf(System.currentTimeMillis());// 生成一个 0 到 9999 之间的随机数Randomrandom=newRandom();intrandomNum=random.nextInt(10000);// 生成一个 0 到 9999 之间...
Retrieves the value of the designated column name in the current row of this SQLServerResultSet object as a java.sql.Timestamp object in the Java programming language. 复制 public java.sql.Timestamp getTimestamp(java.lang.String columnName) Parameters columnName A String that contains the co...
Retrieves the value of the designated column name in the current row of this SQLServerResultSet object as a java.sql.Timestamp object in the Java programming language. Syntax Copy public java.sql.Timestamp getTimestamp(java.lang.String columnName) Parameters columnName A String that...
String[] resultValues= queryResult.getValue().toArray(String[]::new);//由于prometheus写入的时间戳到毫秒级, 而项目中定义的时间戳到秒级, 所以这里进行了转换Types.Sample sample = Types.Sample.newBuilder().setTimestamp(Long.parseLong(resultValues[0] + "000")) ...