Sun Certified Java Programmer 310-065-Lesson 10-Assignments-Part 3 (how we can sort out a list of overloaded methods to choose the correct one to call)

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Title: Sun Certified Java Programmer 310-065-Lesson 10-Assignments-Part 3 (how we can sort out a list of overloaded methods to choose the correct one to call)

Duration: 15 minutes

Summary: In this video, we are continuing our discussion on assignments. We will see how we can sort out a list of overloaded methods to choose the correct one to call. Then, we are going to look at few examples that encompass classes, objects, references and garbage collection. We try to change references and find out where the reference is pointing to know what the output will be. In the last example, we will look at the consequences of using un-initialized variables.

Methodology of the development of example: Good coding standard and simplified design to prepare for the Java programmer certification exam CX-310-065.

Technology Used: Java - Core Concepts.

Keywords: Sun Certified Java Programmer, static, auto-boxing, Long, Integer, object, array, garbage collection, initialization.

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Matthew Casperson
In the video the number of object being created in Question 10 seems to be explained as 5 because a Dozens[3] array, referenced by the variable "da", was created, and each object in that array creates its own array referenced by the variable "dz". This is not correct.

The code creates two new Dozens objects, which you can verify with the two "new Dozens()" statements. Each of these Dozens objects creates an int array referenced by the variable "dz", which is also an object. Finally, the "da" Dozens array is an object, which gives you a total of 5 objects created.

So we have 5 objects created: two Dozens objects each containing 1 int array (for a total of 2 int arrays), and one Dozens array.

[+1 year ago] Answer it

Mr.Bool Editor
We are in contact with the author and he will soon answer.
[+1 year ago] Answer it

Ayad
Thank you for the clarification, Matthew.

After all, we have 3 "new", and 2 of them with arrays, for a total of 5.

[+1 year ago] Answer it

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Sun Certified Java Programmer 310-065-Lesson 10-Assignments-Part 3 (how we can sort out a list of overloaded methods to choose the correct one to call) | Java courses

In this video, We will see how we can sort out a list of overloaded methods to choose the correct one to call.