ICS practice Quiz 2 - Java

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ICS Practice Quiz 2 - Java tests understanding of basic Java programming constructs through practical examples. Assess skills in loop structures, methods, and graphical commands, ensuring foundational Java knowledge. Ideal for beginners in Java or those looking to refresh their skills.

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2. What comes at the end of a command?

Semi-colon

Colon

Curly bracket / brace

Parentheses

every command ends with a semicolon

Explanation

every command ends with a semicolon

3. Which of the following are the basic drawing commands?

SetPenWidth(); forward(); backward(); right();

Forward(); backward(); setHeading(); setPostion();

Forward(); backward(); left(); right();

SetPenColor(); backward(); right(); forward();

The basic drawing commands are the actions that allow the user to move the pen in different directions and change its position. The commands "forward()" and "backward()" are used to move the pen forward or backward, while "left()" and "right()" are used to rotate the pen in the respective directions. These commands are essential for creating different shapes and patterns in a drawing.

Explanation

4. What will happen?
The turtle starts at it's original position. A setPosition command is used and nothing else.

The turtle will do nothing

The turtle will move to the new position

The turtle will draw a line to the new position

The turtle will always leave a mark when it moves unless you use penUp() and penDwn().

Explanation

The turtle will always leave a mark when it moves unless you use penUp() and penDwn().

5. What will happen?
for(int i=0; i<4; i++) { forward(50); right(90); }
setDisplayColor(Color.blue);

You will see a square with blue background.

You will see four squares on a blue background.

You will only see a blue background.

Nothing will happen.

Since setDisplayColor came after the loop (that created a square) it places a block of color over whatever was drawn beforehand. You need to place setDisplayColor first.

Explanation

Since setDisplayColor came after the loop (that created a square) it places a block of color over whatever was drawn beforehand. You need to place setDisplayColor first.

6. What does this create?

penUp();forward(100);right(90);forward(50);right(90);forward(100);right(90);forward(50)

A rectangle

A square

Some lines

Nothing

The penUp makes the turtle not leave any marks

Explanation

The penUp makes the turtle not leave any marks

7. Which of the following is correct

SetpenColor(Color.blue)

SetDisplay(Color.orange);

SetDisplayColor(blue);

SetPenColor(Color.gray);

A) the P in not capitalized
B) Color is missing in setDisplayColor
C) Color is missing in Color.blue

Explanation

A) the P in not capitalized
B) Color is missing in setDisplayColor
C) Color is missing in Color.blue

8. What is missing from the following code?
int 1=0;
while i<45
{forward(20);left(45);
i++;
}

Its missing the parentheses around the while's true/false statement: while(i

Explanation

Its missing the parentheses around the while's true/false statement: while(i

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Current Version
Apr 09, 2024

Quiz Edited by
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Oct 15, 2009

Quiz Created by
Aishamo

Ics Practice Quiz 2 - Java