A float is a floating point number. This means that's the number has a decimal place. Numbers with or without decimal places can be stored in a float variable but more commonly numbers with decimal points.
The correct choices are 1 and 3.4
Answer:
Following are the solution to this question:
Explanation:
In this question, two packages "pkg1 and pkg2" is defined, that hold a class that is "MyClass", in which the class name is the same. If we import the package so, it can't import both classes in the very same file. If we really need to apply to both, then must completely specify one class name, and in the class name is different so, we simply use both classes by creating the instance.
Answer:
The description for the given question is described in the explanation section below.
Explanation:
a...
interface Shape
{
public double getArea(); // creating a function
public double getPerimeter(); // creating a function
}
b and c...
- I preferred Interface although abstract classes are being used when children's classes associate certain aspect methods and variables and because all classes represent a certain method throughout the specific solution, not instance variables, it would be easier to construct an interface.
- Almost all of the period interfaces are favored because they have multiple inheritance capabilities.
CSS in a separate file shared by many web pages provides a mechanism for a consistent layout, so my vote would be answer b.
However, with PHP driven templates you could achieve something similar. Also, JavaScript is commonly used for layout purposes (e.g., jQueryUI). But CSS is all about layout...
Answer:
Examples of Fact-finding techniques includes:
-
Prototyping
-
Questionnaires
- Research and sites visit
-
Interviews
Explanation:
It is important to note that a database system is a tool that allows users to define, create, maintain, and control access to a collection of logically related data and description of these data, designed to meet the information needs of an organization.
<u>Prototyping
</u>
<em>Advantage:</em> enables testing and understanding of the system in advance before final implementation of solution, while requiring less time for research.
<em>Disadvantage:</em> Training and Development cost consumes resources.
<u>Research and site visit </u>
<em>Advantage :</em> better time management if the problem has been researched upon before.
<em>Disadvantage:</em> appropriate permission is often needed before using research materials.
<u> Questionnaires
</u>
<em>Advantage: </em>This technique is not expensive, and responses can be calculated and analysed quickly.
<em>Disadvantage:</em> There may be Incomplete answers received from users and body language of user cannot be observed.
<u>Interviews</u>
<em>Advantage:</em> The body language of interviewees is been perceived.
<em>
Disadvantage: </em>Interviewing is time consuming and costly.
