No, we cannot declare a constructor final in Java. If we try making a constructor final there will be a compile time error. Now, let's understand why can't we make constructor final in Java? A constructor is used to initialize an object when it is created. It is syntactically similar ...
When should we make singleton class? In Java the Singleton pattern will ensure that there is only one instance of a class is created in the Java VirtualMachine. It is used to provide global point of access to the object. In terms of practical use Singleton patterns are used in logging, c...
Because invokeAll() is blocking, we can directly iterate over the Future instances and fetch their computed sums. Also note that an executor service must be shut down. If it is not shut down, the Java Virtual Machine will not exit when the main method does, because there will still be ...
There is a proverb in Hindi, "Haath Kangan ko Aarshi Kya, Padhe Likhe ko Parsi kya", which means instead of saying just show. So, why not we instead of saying that whether we can make an abstract final in Java or not, just code it and see what happens. Let's try that, the fo...
Inject the process engine or any of the Camunda services using constructor injection:import jakarta.inject.Singleton; import org.camunda.bpm.engine.ProcessEngine; import org.camunda.bpm.engine.RuntimeService; @Singleton public class MyComponent { private final ProcessEngine processEngine; private final ...
In Java, C# and many other languages, why are constructors not part of the interface? Node.js In the last years there has been a lot of hype around Node.js. What's your opinion on using a language that was initially conceived to run in the browser in the backend? Java and time-tra...
proposed to mitigate those problems so to make verification under relaxed memory models feasible. We discuss how to adopt some of those techniques in a Maude-based approach to language prototyping, and suggest the use of other techniques that have been shown successful for similar verification ...
can we invoke an overloaded constructor by object of same class? as explained in this code ... i made a 3 constructors. (1)with no parameter(assign's -1 to all the instance variables). (2)with 1 parameter(assign's argument value to all instance variables). (3)with 3 paramet...
Compiled from"Person.scala"publicclassPerson{privatefinaljava.lang.Stringname;// fieldpublicjava.lang.Stringname();// getter methodpublicPerson(java.lang.String);// constructor} We can see that for each field in the Scala class, a field and its getter method are generated. The field is priva...
And of course, we can’t forget about the bug in Java 6 that has turned into a feature in Java 9:sun.misc.Unsafe. This library allows low-level, unsafe operations, such as bypassing security checks in a constructor. This is just a small list of what Java 9 has to offer, an...