kandi X-RAY | Java Summary
kandi X-RAY | Java Summary
Java Programming Tutorial for Beginners
Top functions reviewed by kandi - BETA
- Determine the name of a day .
- Performs the operation using the supplied choices .
- returns true if this is a vowel
- Display 3 questions 3 .
- Compares this object to another .
- Checks to see if this number is prime .
- Main method for testing .
- Private helper function for basic testing
- Record a person .
- Returns details of the course
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Java Examples and Code Snippets
Trending Discussions on Java
We have a multi-module maven project. One of the modules has a bunch of
.proto files, which we compile to java files. Pretty much every other module depends on this module. Most of them use Protobuf 2.4, but one needs to use 2.5.
Is there any nice way to do this? (The not nice way is to edit the pom file to say "2.5", build a jar, manually copy that jar to wherever we need it, and then change the pom file back to 2.4.)...
ANSWERAnswered 2021-Jun-08 at 13:59
Never used protobuf, but, as I understand it's a plugin that generate stuff.
So I'm gonna give you generic pointer hoping it will help. I think you should either try to make 2 jar with different classifier from a single module, see https://maven.apache.org/plugins/maven-jar-plugin/examples/attached-jar.html For example classifier proto2.4 and proto2.5 then you can add the classifier when you define the dependency to that module.
Other option I see is having 2 modules, the real one, you have now, and another one for 2.5 Generate a zip from the main one and the second module would be empty but have a dependency on the generated zip, unzip it and then compile with the plugin config for 2.5 Slower at execution, a bit dirtier imho, but can be needed if for example you need more customization than just the version.
I have file txt with format like this...
ANSWERAnswered 2021-Jun-15 at 21:31
You add each line to the variable
list_Siswa. So for instance the first element of
list_Siswa will be
["Nama"," John"], and so
" John". Then
data_Siswa throws an error, because there is no such element in the array.
The code isn't smart enough to see
Nama: John and assume the following lines are grades that should be associated with John. If you want that, you'll have to do it yourself.
I need to pass this:...
ANSWERAnswered 2021-Jun-15 at 19:49
You can use simply
intent.putExtra instead of worrying about which variant like
put_____Extra to use.
When extracting the value, you can use
intent.extras to get the Bundle and then you can use
get() on the Bundle and cast to the appropriate type. This is easier than trying to figure out which
intent.get____Extra function to use to extract it, since you will have to cast it anyway.
The below code works whether your data class is Serializeable or Parcelable. You don't need to use arrays, because ArrayLists themselves are Serializeable, but you do need to convert from MutableList to ArrayList.
The list consists of dicts that has an id "components", which is itself a list....
ANSWERAnswered 2021-Jun-15 at 17:56
For your original code:
I have timecodes with this structure
hh:mm:ss.SSS for which i have a own Class, implementing the Temporal Interface.
It has the custom Field TimecodeHour Field allowing values greater than 23 for hour.
I want to parse with DateTimeFormatter. The hour value is optional (can be omitted, and hours can be greater than 24); as RegEx
For the purpose of this Question my custom Field can be replaced with the normal HOUR_OF_DAY Field.
My current Formatter...
ANSWERAnswered 2021-Jun-11 at 11:06
I think fundamentally the problem is that it gets stuck going down the wrong path. It sees a field of length 2, which we know is the minutes but it believes is the hours. Once it believes the optional section is present, when we know it's not, the whole thing is destined to fail.
This is provable by changing the minimum hour length to 3.
I encountered a problem while trying to get my java project running on my Debian 10 server. Everything seems to work, but java throws an error when i try to get an instance of a MessageDigest with "SHA256".
It occurs in this line:
MessageDigest digest = MessageDigest.getInstance("SHA256");
java.security.NoSuchAlgorithmException: SHA256 MessageDigest not available
Is there a way to install SHA256 functionality or another way i can create a sha256 hash?...
ANSWERAnswered 2021-Jun-15 at 19:42
Hi I have this working code to detect a valid UUID pattern....
ANSWERAnswered 2021-Jun-15 at 19:27
There is a
// in the pattern that is not in the example string. Besides that, you can omit the word boundaries in between a character a-f0-9 and a
- because it is implicit.
Note to escape the dot to match it literally, and you can add the word boundaries at the start and at the end to prevent partial matches.
You could update the pattern to
**I am trying to write the code for getting the date in required format , I have got the dates but how to add the required time with it , here I have
startDate - 1/08/2021 00:00:00 , EndDate - 20/08/2021 23:59:59 , increment days: 10
and the Expected output is :...
ANSWERAnswered 2021-Jun-15 at 12:58
Use the date-time API.
(The code should be self-explanatory.)
I've got the following code to download a file being transmitted over TCP:...
ANSWERAnswered 2021-Jun-15 at 09:31
TCP/IP connections are designed to be long-lived streaming connections (built on top of the out-of-order, no-guarantee, packet-based IP protocol).
That means that
is.read(bytes) does exactly what the spec says it will: It will wait until at least 1 byte is available, OR the 'end of stream' signal comes in. As long as neither occurs (no bytes arrive, but the stream isn't closed), it will dutifully block. Forever if it has to.
The solution is to either [A] pre-send the size of the file, and then adjust the loop to just exit once you've received that amount of bytes, or [B] to close the stream.
To close the stream, close the socket. It kinda sounds like you don't wanna do that (that you are multiplexing multiple things over the stream, i.e. that after transfering a file, you may then send other commands).
So, option A, that sounds better. However, option A has as a prerequisite that you know how many bytes are going to come out of
inputStream. If it's a file, that's easy, just ask for its size. If it's streamed data, that would require that, on the 'upload code side', you first stream the whole thing into a file and only then stream it over the network which is unwieldy and potentially inefficient.
If you DO know the size, it would look something like (and I'm going to use newer APIs here, you're using some obsolete, 20 year old outdated stuff):
I have a Micronaut application running with the below configuration:...
ANSWERAnswered 2021-Jun-13 at 09:19
It is because you are starting another server by
You don't need it. It is enough to inject
HttpClient into your class by constructor:
No vulnerabilities reported
You can use Java like any standard Java library. Please include the the jar files in your classpath. You can also use any IDE and you can run and debug the Java component as you would do with any other Java program. Best practice is to use a build tool that supports dependency management such as Maven or Gradle. For Maven installation, please refer maven.apache.org. For Gradle installation, please refer gradle.org .
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