Consider the Code Snippet Below

question 12

Multiple Choice

Consider the code snippet below:
Public class RectangleComponent extends JComponent
{
Private static final int RECTANGLE_WIDTH = 20;
Private static final int RECTANGLE_HEIGHT = 30;
Private int xLeft;
Private int yTop;
Public RectangleComponent()
{
xLeft = 0;
yTop = 0;
}
Public void paintComponent(Graphics g) {
g.fillRect(xLeft, yTop, RECTANGLE_WIDTH, RECTANGLE_HEIGHT) ;
}
Public void moveRectangleBy(int dx, int dy)
{
xLeft = xLeft + dx;
yTop = yTop + dy;
repaint() ;
}
}
Which statement(s) causes the rectangle to appear at an updated location?

• A) repaint();
• B) public void moveRectangleBy(int dx, int dy);
• C) xLeft = xLeft + dx;
• YTop = yTop + dy;
• D) xLeft = 0;
• yTop = 0;

---

Definitions:

Commerce

The activity of buying and selling goods and services, especially on a large scale, involving transportation, finance, and marketing.

Transcontinental Railroad

The railway system that connected the eastern and western parts of the United States, completed in 1869, facilitating widespread economic growth and settlement.

Canals and Steamboats

Key components of the early industrial transportation network, where canals allowed for the movement of goods through waterways and steamboats provided powerful and reliable river transportation.

Erie Canal

A canal in New York, completed in 1825, connecting the Hudson River at Albany to Lake Erie at Buffalo, significantly contributing to the development and expansion of the United States by improving transportation.