Example Code Ch 09-5

question 13

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: Which of the following would best redefine the toString method for BClass?

• A) public String toString(int z)
• {
• Return " " + x + " " + y + " " + z;
• }
• B) public String toString()
• {
• Return super.toString();
• }
• C) public String toString()
• {
• Return super.toString() + " " + z;
• }
• D) public String toString()
• {
• Return super.toString()+" " x+" "+y+" "+z;
• }
• E) public String toString()
• {
• Return " " + x + " + y + " " + z;
• }

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Definitions:

Earth's Land

The solid surface of the Earth that is not covered by water, including continents and islands.

Compacted Shells

Refers to shells that have been tightly packed together, often found in marine or beach environments, potentially affecting soil drainage and plant growth.

Limestone

A sedimentary rock composed mainly of calcium carbonate, often used in building materials and is a key ingredient in cement.

Tailings

The materials left over after the process of separating the valuable fraction from the uneconomic fraction of an ore.