Example Code Ch 09-5

question 46

Multiple Choice

Example Code Ch 09-5
Consider the following class definition:
public class AClass
{
protected int x;
protected int y;
public AClass(int a, int b)
{
x = a;
y = b;
}
public int addEm()
{
return x + y;
}
public void changeEm()
{
x++;
y--;
}
public String toString()
{
return "" + x + " " + y;
}
}
-Refer to Example Code Ch 09-5: You want addEm to now add all three values, return the sum, and changeEm to change x and y, but leave z alone. Which should you do?

• A) Redefine addEm and changeEm without referencing super.addEm() or super.changeEm().
• B) Redefine addEm to return the value of z+super.addEm(), but leave changeEm alone.
• C) Redefine changeEm to call super.changeEm() and then set z = x + y, but leave addEm alone.
• D) Redefine addEm to return the value of z+super.addEm() and redefine changeEm to call super.changeEm() and then set z = x + y.
• E) Redefine changeEm to call super.changeEm() without doing anything to z, and redefine addEm to return super.addEm().

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Definitions:

Labour Content

The total amount of work effort, measured in labor hours or cost, required to produce a unit of product or service.

Wage-Incentive Plans

Compensation strategies designed to motivate employees by linking a portion of their pay directly to their performance, productivity, or efficiency.

Standard Time

The established duration within which a task or operation should be completed, often used in productivity measurement and workforce planning.

Worker Performance Ratings

Evaluations that measure the effectiveness and efficiency of an employee's work output and quality.