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
}

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