序列图 ApplicationUserApplicationUserInput a stringCheck if it is a dateReturn the result 上面的序列图展示了用户输入一个字符串,应用程序检查该字符串是否是日期,然后返回结果的整个过程。 结论 通过使用Hutool工具类库中的DateUtil类,我们可以方便地判断一个字符串是否是日期。这样的功能在实际开发中非常实用,可...
importjava.text.SimpleDateFormat;importjava.util.Date;publicclassTimeComparison{publicstaticvoidmain(String[]args){SimpleDateFormatsdf=newSimpleDateFormat("yyyy-MM-dd HH:mm:ss");StringtimeStr="2022-01-01 12:00:00";try{Datedate=sdf.parse(timeStr);DatecurrentDate=newDate();if(date.compareTo(c...
publicstaticLocalDateisValidLocalDate(StringdateStr,DateTimeFormatterdateFormatter){LocalDatedate=null;try{date=LocalDate.parse(dateStr,dateFormatter);}catch(DateTimeParseExceptione){//handle exceptione.printStackTrace();}returndate;} The given below is aJava program to check if a given date is in a...
import java.awt.*; import java.applet.*; public class DocFooter extends Applet { String date; String email; public void init() { resize(500,100); date = getParameter("LAST_UPDATED"); email = getParameter("EMAIL"); } public void paint(Graphics g) { g.drawString(date + " by ",100,...
//判断两个日期是否相等publicvoidcompareDate(){LocalDate today=LocalDate.now();LocalDate date1=LocalDate.of(2018,01,21);if(date1.equals(today)){System.out.printf("TODAY %s and DATE1 %s are same date %n",today,date1);}} 5.检查像生日这种周期性事件 ...
importorg.apache.logging.log4j.Logger;publicclassHelloWorld{privatestaticfinal Logger logger=LogManager.getLogger(HelloWorld.class);publicstaticvoidmain(String[]args){logger.debug("Hello from Log4j 2");// in old days, we need to check the log level to increase performance/*if (logger.isDebugEnabled...
publicstaticbooleanisValidDate(String str) { booleanconvertSuccess=true; SimpleDateFormat format=newSimpleDateFormat("YYYY/MM/dd HH:mm"); try{ format.setLenient(false);//不宽松地验证日期 format.parse(str); }catch(Exception e) { convertSuccess=false;//若 抛java.text.ParseException或者NullPointer...
publicvoidprocessOrder(int orderId, String product, int qty, LocalDate orderDate){ if(quantity<=0){ String errorMessage ="Invalid order quantity: "+ qty +" for product "+ product +", order ID "+ orderId; logger.error(errorMessage); ...
public static void main(String[] args) { <!-- --> try { <!-- --> URL url = new URL("https://www.example.com"); HttpURLConnection connection = (HttpURLConnection) url.openConnection(); connection.setRequestMethod("GET"); int responseCode = connection.getResponseCode(); if (respon...
fun getUriByPath(path: String?): Uri? = if (path.isNullOrBlank()) null else getUriByFile(File(path)) fun getUriByFile(file: File?, isOriginal: Boolean = false): Uri? { return if (isOriginal) Uri.fromFile(file) else { if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {...