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Java naming convention for static final variables [duplicate]
.... In my estimation, that is not justification to continue the tradition in Java.
Question of Intention
We should ask ourselves what is the function of static final in our own context. Here are three examples of how static final may be used in different contexts:
public class ChatMessage {
//U...
How to get thread id from a thread pool?
...rily start from 0 or 1.
Here is an example matching the question:
import java.util.concurrent.*;
class ThreadIdTest {
public static void main(String[] args) {
final int numThreads = 5;
ExecutorService exec = Executors.newFixedThreadPool(numThreads);
for (int i=0; i<10; i++) {
...
How to override equals method in Java
I am trying to override equals method in Java. I have a class People which basically has 2 data fields name and age . Now I want to override equals method so that I can check between 2 People objects.
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WhatsApp API (java/python) [closed]
I am looking for WhatsApp API, preferably a Python or Java library.
5 Answers
5
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How do I pass parameters to a jar file at the time of execution?
...
To pass arguments to the jar:
java -jar myjar.jar one two
You can access them in the main() method of "Main-Class" (mentioned in the manifest.mf file of a JAR).
String one = args[0];
String two = args[1];
...
What's the difference between JPA and Spring Data JPA?
...PA and JPA. I know about JPA that it is a specification for persisting the Java Objects to a relational database using popular ORM technology.
...
HTTP POST using JSON in Java
I would like to make a simple HTTP POST using JSON in Java.
11 Answers
11
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How can I combine two HashMap objects containing the same types?
...more control over how values are combined, you can use Map.merge, added in Java 8, which uses a user-provided BiFunction to merge values for duplicate keys. merge operates on individual keys and values, so you'll need to use a loop or Map.forEach. Here we concatenate strings for duplicate keys:
m...
Is it possible to assign numeric value to an enum in Java?
Is anything like this possible in Java? Can one assign custom numeric values to enum elements in Java?
5 Answers
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Java ArrayList - how can I tell if two lists are equal, order not mattering?
...ollections4.CollectionUtils
public static boolean isEqualCollection(java.util.Collection a,
java.util.Collection b)
Returns true iff the given Collections contain exactly the same
elements with exactly the same cardinalities.
That is, if...