Java Archives - Page 15 of 336

Java, Programming

IT Nursery

Jersey stopped working with InjectionManagerFactory not found

I am receiving below error while running my Jersey API in Tomcat 8.5.11 which is causing my API to stop: HTTP Status 500 ...

June 1, 2022
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Java, Programming

IT Nursery

Access restriction: The type ‘Application’ is not API (restriction on required library rt.jar)

Here is the code: package mscontroller; import javax.swing.*; import com.apple.eawt.Application; public class Main { public static void main(String...

June 1, 2022
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Java, Programming

IT Nursery

How to generate serial version UID in Intellij

When I used Eclipse it had a nice feature to generate serial version UID. But what to do in IntelliJ? How to choose ...

June 1, 2022
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Java, Programming

IT Nursery

What is the main difference between Inheritance and Polymorphism?

I was presented with this question in an end of module open book exam today and found myself lost. I was reading Head ...

June 1, 2022
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Java, Programming

IT Nursery

Is there a performance difference between a for loop and a for-each loop?

What, if any, is the performance difference between the following two loops? for (Object o: objectArrayList) { o.DoSomething(); } and for (int i=0; ...

June 1, 2022
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Java, Programming

IT Nursery

Is it good practice to make the constructor throw an exception? [duplicate]

This question already has answers here: When to throw an exception? (32 answers) Closed 3 years ago. Is it a good practice to ...

June 1, 2022
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Java, Programming

IT Nursery

Is it good practice to make the constructor throw an exception? [duplicate]

This question already has answers here: When to throw an exception? (32 answers) Closed 3 years ago. Is it a good practice to ...

June 1, 2022
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Java, Programming

IT Nursery

Configuring Log4j Loggers Programmatically

I am trying to use SLF4J (with log4j binding) for the first time. I would like to configure 3 different named Loggers that ...

June 1, 2022
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Java, Programming

IT Nursery

Can you explain the concept of streams?

I understand that a stream is a representation of a sequence of bytes. Each stream provides means for reading and writing bytes to ...

June 1, 2022
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Java, Programming

IT Nursery

Callback functions in Java

Is there a way to pass a call back function in a Java method? The behavior I’m trying to mimic is a .Net ...

June 1, 2022
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