Tyrique  Littel

Tyrique Littel

1600549200

Is Java “pass by value” or “pass by reference” ?

Friends , in this article I’ll be explaining about whether Java uses pass by value or pass by reference ? After reading this article you will be able to grasp the concept about pass by value and pass by reference .While reading this article try to focus on example codes and associated comments .

Java is always pass by value and not pass by reference .

What does pass by value actually mean ?

As the name says , pass by value simply means , we pass the value of an Object and not actual/original reference variable of an Object from main function to the called function but the copy of reference variable of this object is passed to the called function which ultimately points to same object .

#pass-by-value #pass-by-reference #pass-by-value-in-java #pass-by-ref-vs-value #pass-by-reference-in-java

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Is Java “pass by value” or “pass by reference” ?
Tyrique  Littel

Tyrique Littel

1600549200

Is Java “pass by value” or “pass by reference” ?

Friends , in this article I’ll be explaining about whether Java uses pass by value or pass by reference ? After reading this article you will be able to grasp the concept about pass by value and pass by reference .While reading this article try to focus on example codes and associated comments .

Java is always pass by value and not pass by reference .

What does pass by value actually mean ?

As the name says , pass by value simply means , we pass the value of an Object and not actual/original reference variable of an Object from main function to the called function but the copy of reference variable of this object is passed to the called function which ultimately points to same object .

#pass-by-value #pass-by-reference #pass-by-value-in-java #pass-by-ref-vs-value #pass-by-reference-in-java

Tyrique  Littel

Tyrique Littel

1600135200

How to Install OpenJDK 11 on CentOS 8

What is OpenJDK?

OpenJDk or Open Java Development Kit is a free, open-source framework of the Java Platform, Standard Edition (or Java SE). It contains the virtual machine, the Java Class Library, and the Java compiler. The difference between the Oracle OpenJDK and Oracle JDK is that OpenJDK is a source code reference point for the open-source model. Simultaneously, the Oracle JDK is a continuation or advanced model of the OpenJDK, which is not open source and requires a license to use.

In this article, we will be installing OpenJDK on Centos 8.

#tutorials #alternatives #centos #centos 8 #configuration #dnf #frameworks #java #java development kit #java ee #java environment variables #java framework #java jdk #java jre #java platform #java sdk #java se #jdk #jre #open java development kit #open source #openjdk #openjdk 11 #openjdk 8 #openjdk runtime environment

Samanta  Moore

Samanta Moore

1620458875

Going Beyond Java 8: Local Variable Type Inference (var) - DZone Java

According to some surveys, such as JetBrains’s great survey, Java 8 is currently the most used version of Java, despite being a 2014 release.

What you are reading is one in a series of articles titled ‘Going beyond Java 8,’ inspired by the contents of my book, Java for Aliens. These articles will guide you step-by-step through the most important features introduced to the language, starting from version 9. The aim is to make you aware of how important it is to move forward from Java 8, explaining the enormous advantages that the latest versions of the language offer.

In this article, we will talk about the most important new feature introduced with Java 10. Officially called local variable type inference, this feature is better known as the **introduction of the word **var. Despite the complicated name, it is actually quite a simple feature to use. However, some observations need to be made before we can see the impact that the introduction of the word var has on other pre-existing characteristics.

#java #java 11 #java 10 #java 12 #var #java 14 #java 13 #java 15 #verbosity

Joseph  Murray

Joseph Murray

1623967440

Reference Variable in Java

Before We Started with the Reference variable we should know about the following facts.

**1. **When we create an object(instance) of class then space is reserved in heap memory. Let’s understand with the help of an example.

Demo D1 = new Demo();

Reference Variable

Now, The space in the heap Memory is created but the question is how to access that space?.

Then, We create a Pointing element or simply called Reference variable which simply points out the Object(the created space in a Heap Memory).

Heap Memory

**Understanding Reference variable **

1. Reference variable is used to point object/values.

**2. **Classes, interfaces, arrays, enumerations, and, annotations are reference types in Java. Reference variables hold the objects/values of reference types in Java.

3. Reference variable can also store null value. By default, if no object is passed to a reference variable then it will store a null value.

**4. **You can access object members using a reference variable using **dot **syntax.

.<instance variable_name / method_name>

#java #reference variable in java #variables in java #reference variables #refer #variable's

Seamus  Quitzon

Seamus Quitzon

1601454367

Answering the 10 Most Common Questions About Java

Developers and beginners often get stuck in their career as a Java developer and every work need a certain effort and practice to master.

Developers often ask questions to their team or the public for solutions. As a Java developer, there are thousands of problems that they face every day. This problem could be critical or minor.

Java is a general-purpose object-oriented programming language. For a

Java Developer or any developer, the errors keep on occurring. Most

commonly programmers tend to face such errors while practicing or

experimenting.

So, we have created a list of most asked questions about Java to help you guys. Here is a list of questions about Java.

10 Most Asked Questions About Java

If you are also a Java developer and if you have also faced errors while coding and if you have some questions about Java, then please first have a look at the solutions below. The below questions about Java are described with the best solutions as possible.

1. Is Java “pass-by-reference” or “pass-by-value”?

Answer:

Java is always pass-by-value. Unfortunately, when we pass the value of an object, we are passing the reference to it. This is confusing to beginners as these questions about java are frequently asked by beginners and it goes like this:

public static void main(String[] args) {
    Dog aDog = new Dog("Max");
    Dog oldDog = aDog;

    // we pass the object to foo
    foo(aDog);
    // aDog variable is still pointing to the "Max" dog when foo(...) returns
    aDog.getName().equals("Max"); // true
    aDog.getName().equals("Fifi"); // false
    aDog == oldDog; // true
}

public static void foo(Dog d) {
    d.getName().equals("Max"); // true
    // change d inside of foo() to point to a new Dog instance "Fifi"
    d = new Dog("Fifi");
    d.getName().equals("Fifi"); // true
}

#java #programming #software-development #java-questions #pass-by-reference #pass-by-value #hash