I am trying to set a custom font to the titles (“Tab Item 1”, “Tab Item 2”, “Tab Item 3”) from the code below. I am really new to Android Studio and Java and am just learning by doing and kind materials that has been over the internet. Assuming I have a font named “abc.ttf” already in my assets folder,
SimpleDateFormat returns wrong number of days
I need to get the number days, hours, minutes, seconds from a long value. But I am getting wrong number of days from a following code. When I pass 106988550 and “dd:HH:mm:ss” to this method, I am getting “02:05:43:08” Expected actual answer is : “01:05:43:08”. I don’t know where it is wrong and how I can achieve the actual answer.
Tomcat 8 is not able to handle get request with ‘|’ in query parameters?
I am using Tomcat 8. In one case I need to handle external request coming from external source where the request has a parameters where it is separated by |. Request is looks like this: http://localhost:8080/app/handleResponse?msg=name|id| In this case I am getting following error. EDIT 1 It works with Apache Tomcat 8.0.30 but not with Tomcat 8.5 Answer This behavior
Java slice array as in python
I have an byte array in Java and need to get parts of it. I wanted to work with Java arrays in the same way as I work with Python list, using slices. There is something similar to this in Java? Thank you in advance. Answer You can use Arrays’ (https://docs.oracle.com/en/java/javase/14/docs/api/java.base/java/util/Arrays.html) built-in Arrays#copyOfRange()
Java Vowel count using Collection
I am asked to write a code to count and display vowels in a String using Sets. Any suggestions as to why the code below gives wrong output? Switch seemed like the obvious approach, I also tried with an if-statemen, but neither work properly. Answer I’m pretty sure it’s partially because you’re counting ‘Y’ and ‘W’ as vowels. Also, when
I have an enum, but i dont know how can I use correctly?
I searched so long for what enums are useful. In my Opinion there are Variables with many keywords. So have to programming a program what Is used to manage a bank. My Enum has 2 Variables EINZAHLUNG(Deposit) and AUSZAHLUNG(Payout). So I have an class Menue which is provide to call the Methods. The menue would be chosen by an UserInput.
How to specify source and target compatibility in Java module?
I have a Gradle project consisting of an Android module (the com.android.library plugin is applied in the build.gradle file) and a Java module (the java plugin is applied in the build.gradle file). Within the build.gradle file of the Java module I was previously specifying the source and target compatibility as follows: I’ve just updated the project’s “Android Plugin for Gradle”
Parse list of beans with snakeyaml
Is it possible to parse with snakeyaml the following content and obtain a List<Radio> (where Radio is the appropriate java bean) ? new Yaml().load(…); returns a List<HashMap>, but I’d like to get a List<Radio> instead. Answer The only way I know is to use a top object to handle the collection. Yaml file : I just added “—” , new
Why does Java throw java.lang.OutOfMemoryError: Metaspace but there is plenty of free metaspace?
In my application I’m creating lots of java classes at runtime with javassist library. At some point a java.lang.OutOfMemoryError: Metaspace is thrown but java process monitoring (based on java.lang.management.MemoryPoolMXBean) reports that there is plenty of free metaspace. Why is that? And how to use 100% of metaspace memory pool? I’ve created a minimal application that reproduces the problem https://github.com/vlkv/java_metaspace_oom Donwload
Java invert a map
I need to invert an original map. which type is <Integer, String>, like {1 = A, 2 = A, 3 = B….}. I want to create a new map which is String to ArrayList because if 1 = A, and 2 = A, than I want to have something like this: A = [1， 2]. So how can I do