In hashmap, yes you can include custom types as Key/Value pair. but that should not be object , it must of clearly a type . means a class you can mention which becomes type for custom types. example , you can define String type variable as String s = “abc”; now if we try to … Read more
Calendar.DAY_OF_YEAR is a constant representing the field that contains the day-of-year. It’s numeric value (6, apparently) has no meaning beyond being not equal to any of the other field constants. You want Calendar.getInstance().get(Calendar.DAY_OF_YEAR); solved Java Calendar Not working [closed]
Without tracing, it’s relatively straightforward to see what a given tree should print. The structure of the method means that a string will look like this: <content><left sub-tree><content><right sub-tree><content> So all you have to do is continually substitute that pattern for the left and right sub-trees (with empty strings for non-existent sub-trees) and get the … Read more
You can format and parse the date from cal.getTime() using df (SimpleDateFormat(“MM/dd/yyyy”)) which will get rid of time and then compare the result with d. solved How to ignore time while checking date using before(Date d)
You need write the image as a byte array to the response’s output stream. Something like this: byte[] imageBytes = getImageAsBytes(); response.setContentType(“image/jpeg”); response.setContentLength(imageBytes.length); response.getOutputStream().write(imageBytes); Then in you JSP you just use a standard img element: <img src=”url to your servlet”> Source: https://stackoverflow.com/a/1154279/1567585 solved How to display an image using inputstream in servlets?
For the purpose of app responsiveness, as stated in the official documentation on Processes and Threads, it is not recommended to block the UI-thread (for example by calling Thread.sleep()) longer than a few seconds. As also described in the article provided there are several options to avoid that, one of which is to use Handler.postDelayed(Runnable, … Read more
Parse the value as a whole and then add the value you desire. new BigDecimal(/* your string */).add(BigDecimal.ONE) Or if I read your code correctly, you always want to add new BigDecimal(“0.001”). EDIT: if you really want to just change the last digit, use something like the following: public BigDecimal incrementLastDigit(String value) { BigDecimal decimal … Read more
I don’t have the commenting privilege yet, but this is a duplicate. This question could be found from a quick Google: Splitting a string into two halfs int mid = length / 2; //get the middle of the String String[] parts = {text.substring(0, mid),text.substring(mid)}; solved How to split a string into two equally based on … Read more
It’s not asynchronous. You need to invoke start() not run() Run will execute the Runnable’s run method in the current thread. start will create a new thread which will invoke the run method. 0 solved Java Thread Hang
Change the first format to SimpleDateFormat tempFormat = new SimpleDateFormat(“yyyy-MM-dd”); as DD is the day in the year. 22 is definitely in January 0 solved simple date format giving wrong month [duplicate]
You have mistake in both sumOfEvenPlaces() and sumOfOddPlaces() methods. In sumOfEvenPlaces(long number) you have to change number %= 10; to number /= 10; You can only skip a digit using number / 10 not by number % 10 And in both functions change while (number % 10 != 0 || number / 10 != 0) … Read more
try this def reverse_besides_number(l): # convert number in list to a dict # record the index d = {k: v for k, v in enumerate(l) if v.isdigit()} # record the character in list c = [i for i in l if not i.isdigit()] c.reverse() # insert for key, value in d.items(): c.insert(key, value) return c … Read more
Don’t compare int values with =, the assignment operator. Use == to compare, which results in the needed boolean. Change if((counter = 0) || to if((counter == 0) || // And the others after it also. solved How to Use the OR operator
If you set j = i then the minimum distance would be zero since you’d be computing the distance between a point with itself! If you set j = 0 the above would still apply, albeit with unnecessary duplicated comprisons, since you’d be including j == i. solved what happens when we change the value … Read more
Its simple: Let’s assume your each column is 15 characters wide, if it’s less or more change accordingly: // Format header System.out.println(String.format(“%1$-15s”, “EMPO” )+ “|”+”\t”+String.format(“%1$-15s”, “ENAME” )+ “|”+”\t”+String.format(“%1$15s”, “SAL” )+ “|”+”\t”+String.format(“%1$15s”, “AVERAGE” )+ “|”); Similarly format your row: I leave this one for you to practice. System.out.println(eno+”\t”+ename+”\t”+sal+”\t”+avg); If you are not able to figure out, … Read more