I need to choose dynamically which parameters should be in query output. Is there any way to do something like that: For example I have Entity User with name, surname, address, age. In one case I want to choose only name, in other sername, age and address. And e.t.c Answer You can create interfaces to represe…
Tag: java
I am trying to create an API using SpringBoot but I don’t know how to handle json request/response
I am new to Java and Spring boot. I am creating a new API. Using postman I am sending a request body which contains request header and request payload. Then I have a controller which handles the request with the help of RequestPayload class. (And a service and dao file but I am sure those are ok.) Kindly let …
Isn’t SecurityContextHolder a Bean?
Trying to Autowire SecurityContextHolder I get error Turns out that it is available from any part of the code like How come it isn’t a bean and how does it get initialized under the hood? Are there other static utility classes like that available to be consumed from anywhere and how do I find them? Answ…
ImageView background change while .animate() [Java][Android Studio]
I’m trying to do some ‘nice’ animation during rotation of the image. I mean, I’m trying to change image bacground while the rotation reach 90f (is totally invisible), to continue rotation with other src. In this test case, I’m trying to rotate chest image and end the animation wi…
Cash to Change in Java
I am new to Java and was trying to write code that would tell you how much change you would receive for a given amount of money (in minimum number of coins). For example $0.31 would give 1 quarters, 0 dimes, 1 nickels, 1 pennies. I got to a point where my code seemed to work. However, while most values
How to make a Java containsignorecase that works with all human languages
For example I have this simple containsignorecase method: But it fails with some comparissions like: ΙΧΘΥΣ & ιχθυσ So I switched to this library which is mentioned here: which has its own method StringUtils.containsIgnoreCase: Now it works for ΙΧΘΥΣ & ιχθυσ, but it fails for weiß & WEISS, tschüß &…
java form does not display [closed]
Closed. This question needs details or clarity. It is not currently accepting answers. Want to improve this question? Add details and clarify the problem by editing this post. Closed 3 months ago. Improve this question I am very new to java forms. Sorry about this easy question, I’ve searched too many f…
Retrieve word(s) from characters using map
I am trying to understand Collections and Stream. I have split the sentence below and kept the position of each letter (I ignored space/blank): “Hello Word!” Results: [H, e, l, l, o, , W, o, r, d, !] (charsList) {!=[10], r=[8], d=[9], e=[1], W=[6], H=[0], l=[2, 3], o=[4, 7]} (charsIndex) How can I…
Display the array on the page as an HTML table. Use output scriptlet
java Create an array with the following content: 1 2 3 4 5 6 7 8 9 Display the array on the page as an HTML table. I did this like this: but it doesn’t work Answer For a JSP scriptlet (using <% %>) you must print your output. With Java this is through out.println() since out is provided in
List of BigDecimal: how to calculate absolute difference between elements not adjacent to Zero value using Java 8 Stream?
I have a list of BigDecimal that could be as elements: I would like to calculate the absolute difference between elements not next to Zero value, in this example difference between 3 and 4, 4 and 5. Expected result should be also of type List<BigDecimal>. Of course, the value of Zero could be in any pos…