I Make a J2ME Application and I just want to print the system date and time, and when I search I found this class that used for that purpose, but I didn't find it in J2ME to use it.
How can I do that?
Is this enough for what you need?
Calendar cal = Calendar.getInstance();
StringBuffer date = new StringBuffer();
StringBuffer time = new StringBuffer();
date.append(cal.get(Calendar.DATE)).append('/');
date.append(cal.get(Calendar.MONTH) +1).append('/');
date.append(cal.get(Calendar.YEAR));
time.append(cal.get(Calendar.HOUR_OF_DAY)).append(':');
time.append(cal.get(Calendar.MINUTE)).append(':');
time.append(cal.get(Calendar.SECOND));
Related
I'm trying to set the scheduled time when creating an assignment using the Google Classroom API. However, I'm confused about which date format is needed. By the error messages, it seems to accept a string which holds a timestamp and a timezone or Z at the end. Among others, I've tried using System.currentTimeMillis() + "Z", as well as googleDate.getValue() + "Z", googleDate.getValue() since Google Date format seems to be the way to go based on this doc but none of them seem to work.
Any ideas perhaps?
Thank you.
String timezone = timestamp + offset + "";
System.currentTimeMillis()
com.google.api.client.util.DateTime googleDate =
new com.google.api.client.util.DateTime(new java.util.Date());
// Date javaDate = new Date(googleDate.getValue());
CourseWork courseWork = new CourseWork()
.setCourseId(course.getId())
.setTitle("title PUBLISHED 2")
.setDescription("desc")
.setScheduledTime(googleDate.getValue() + "Z")
.setMaxPoints(100.0)
.setDueDate(date)
.setDueTime(timeOfDay)
.setWorkType("ASSIGNMENT")
.setState("PUBLISHED")
;
This is what I get when I manually add a timestamp and turn it into a string.
And this using the Google date instead.
And this with the new Java 8 apis
java.time
I recommend that you use java.time, the modern Java date and time API, for your date and time work. The following code gives the same result as the code from your answer.
LocalDate localDate = LocalDate.now().plusDays(7);
String s = localDate.atStartOfDay(ZoneId.systemDefault())
.format(DateTimeFormatter.ISO_OFFSET_DATE_TIME);
System.out.println(s);
Output in my time zone today:
2021-10-20T00:00:00+02:00
Compared to your own answer you have fewer conversions, and you are freed from writing your own format pattern string since the formatter we need is built in.
This worked:
LocalDate localDate = LocalDate.now().plusDays(7);
java.util.Date date1 = java.util.Date.from(localDate.atStartOfDay()
.atZone(ZoneId.systemDefault())
.toInstant());
String s = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ssXXX").format(date1);
It seems the imports were using the Google Date class instead of java.util.date.
I currently have some TestNG custom reporting code that works with the local MySQL database I have been testing against. The resulting database is postgres due to issues with latest MySQL versions in AWS, in trying to convert the format of TestNG millis over I have been encountering issues with the format which I can't seem to get one that works right.
My custom report code was using the following:
report.reporting.put("startDate", testResult.getStartMillis());
report.reporting.put("endDate", testResult.getEndMillis());
SimpleDateFormat sdf = new SimpleDateFormat("yyyy.MM.dd HH:mm:ss");
String startDbTime = sdf.format(report.get("startDate"));
String endDbTime = sdf.format(report.get("endDate"));
When I try some of the dateformatters I am receiving indexing errors like: DateTimeParseException: Text could not be parsed at index 4
I've used some various options like offset or instant with no success.
This is a collection of some of the options I have tried.
SimpleDateFormat sdf = new SimpleDateFormat("yyyy.MM.dd HH:mm:ss");
String startDbTime = sdf.format(report.get("startDate"));
String endDbTime = sdf.format(report.get("endDate"));
// OffsetDateTime startDbTime = OffsetDateTime.parse(startRawDbTime);
// OffsetDateTime endDbTime = OffsetDateTime.parse(endRawDbTime);
// ZonedDateTime startDbTime = ZonedDateTime.parse(startRawDbTime);
// ZonedDateTime endDbTime = ZonedDateTime.parse(endRawDbTime);
SimpleDateFormat sdf = new SimpleDateFormat("yyyy.MM.dd HH:mm:ss");
String startRawDbTime = sdf.format(report.get("startDate"));
String endRawDbTime = sdf.format(report.get("endDate"));
DateTimeFormatter formatter = DateTimeFormatter.ISO_LOCAL_DATE_TIME;
LocalDate startParse = LocalDate.parse(startRawDbTime,formatter);
LocalDate endParse = LocalDate.parse(endRawDbTime,formatter);
Long startTimeRaw = Long.parseLong(report.get("startDate").toString());
Instant startInst = Instant.ofEpochMilli(startTimeRaw);
ZonedDateTime zoneStart = ZonedDateTime.ofInstant(startInst, ZoneOffset.UTC);
LocalDate dateStart = formatter.format(zoneStart);
Is there a conversion step I am missing? I thought it would be simple to convert from millis to something that postgres would accept.
Worked out how to do this with PostGres by resetting the DB table to be a date with time zone, then adjusted my Java code to the following:
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
String startRawDbTime = sdf.format(report.get("startDate"));
String endRawDbTime = sdf.format(report.get("endDate"));
Timestamp timeStart = Timestamp.valueOf(startRawDbTime);
Timestamp timeEnd = Timestamp.valueOf(endRawDbTime);
With the statement insert updated with the right type:
reportInsert.setObject(4,timeStart, Types.TIMESTAMP);
reportInsert.setObject(5,timeEnd, Types.TIMESTAMP);
Everything works as expected now.
I am writing test script for signup page and i need to put email address on each time. Can someone help me how to increment by value 1 in the email address as i execute the script for example, test#test.com and next time value should be test1#test.com. I an try with time stamp but not successfully work.
public class GetCurrentTimeStamp
{
public static void main( String[] args )
{
java.util.Date date= new java.util.Date();
System.out.println(new Timestamp(date.getTime()));
}
}
If you are trying to provide always unique email id, then you can use date with seconds as it keep changing also you can use
System.currentTimeMillis()
which gives number always unique. so you can append/concatenate it to email, i hope you know it.
You can use below code to get date
DateFormat dateFormat = new SimpleDateFormat("yyyy/MM/dd HH:mm:ss");
Date date = new Date();
System.out.println(dateFormat.format(date)); //2016/04/19 16:05:48
depends of simple date format provide 'yyyy/MM/dd HH:mm:ss' output will be displayed.
Thank You,
Murali
Use java.util.Date class instead of Timestamp and format it like so.
String timeStamp = new SimpleDateFormat("yyyy.MM.dd.HH.mm.ss").format(new Date());
String email= "test"+ timestamp + "#test.com";
Use below code:-
int num = 1; // Put this stament outside the for loop or put it as global variable.
Now use below code :-
num++;
String email= "test"+ num + "#test.com";
Hope it will help you :)
I cannot get the add function in Blackberry Java.
// Date
private static DateFormat dateFormat = new SimpleDateFormat(
"yyyy-MM-dd hh:mm:ss");
private static Calendar cal = Calendar.getInstance();
public static final String date = dateFormat.format(cal.getTime())
.toString();
The cal variable don't have add function because I want to reduce 1 day from current date.
The source stated that used cal.add(Calendar.DATE, -1);.
The following solution works when using Java SE. I haven't verified using BlackBerry Java ME yet. But, given that I am only using functions that exist in both the SE version of Calendar and the BlackBerry version of Calendar, hence I have a good feeling about the accuracy of this solution. Append these lines to your code:
long curTime = cal.getTimeInMillis();
curTime -= 1000*60*60*24;
cal.setTimeInMillis(curTime);
System.out.println(dateFormat.format(cal.getTime()).toString());
Try this:
Calendar cal = Calendar.getInstance();
cal.setTimeInMillis(cal.getTime() - DateTimeUtilities.ONEDAY);
Updated, based on ecb0628's answer and paulkayuk's comment.
Check Calendar, getTimeInMilis(), setTimeInMillis(long millis), and DateTimeUtilities.ONEDAY.
I wrote a program communicated with sockets.But I don't know why they don't work.
Server Code:
this.serverSocket = new ServerSocket(ServerConnector.port);
this.socketListener = this.serverSocket.accept();
System.out.println(this.socketListener.getPort());
this.objIn = new ObjectInputStream(this.socketListener.getInputStream());
System.out.println("1");
this.objOut = new ObjectOutputStream(this.socketListener.getOutputStream());
System.out.println("1");
this.objOut.writeInt(19999);
System.out.println("1");
this.objOut.writeObject(new Date());
System.out.println("1");
Client Code:
this.clientSocket = new Socket(ClientConnector.host, ClientConnector.port);
System.out.println(this.clientSocket.getPort());
this.objIn = new ObjectInputStream(this.clientSocket.getInputStream());
System.out.println("1");
this.objOut = new ObjectOutputStream(this.clientSocket.getOutputStream());
System.out.println("1");
int i = (Integer) this.objIn.readInt();
System.out.println(i);
Date date = (Date) this.objIn.readObject();
The truth is, they don't show any information I suggested to pass through(19999 and date), they even can't print a line of "1"(I added for testing). It means even the line below can't work normally. I really confused by these, who can figure the error out?
this.objIn = new ObjectInputStream(this.clientSocket.getInputStream());
You are most likely experiencing the effect of Nagle's Algorithm. which tries to optimize packet sending in TCP. If you want to send your data immediately you need to disable it using the setTcpNoDelay method on the socket interface.
P.S. no idea why the question is tag'ed as osgi, as it has no relevance to OSGi at all.