Flags with Rectangles Tutorial

Flags Tutorials

Rectangles

Lines

Polygons

Stars

Repeats

Methods

Hard Problems

• You may want to review: Drawing_Rectangles before tackling these questions.
• You might want to try coordinates exercises if you are not comfortable with x ,y coordinates.

Experiment in interaction

Libya

The flag of Libya is a simple green rectangle.

Try the program as it is given, then change it so that the green rectangle is 150 wide.

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static void drawFlag(Graphics g) { g.setColor(new Color(0,128,0)); g.fillRect(0,0,75,100); }

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test text

 

 

 

 

France

The flag of France is blue, white and red. The code given draws only one of the three rectangles required and it is in the wrong place.

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static void drawFlag(Graphics g) { g.setColor(Color.blue); g.fillRect(100,0,50,100); }

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test text

 

 

 

 

Germany

The flag of Germany is black, red and yellow.

Only one of the three rectangles has been drawn - and that one is in the wrong place.

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static void drawFlag(Graphics g) { g.setColor(Color.yellow); g.fillRect(0,0,150,30); }

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test text

 

 

 

 

Japan

• The flag of Japan is a red circle on a white background.
• The rectangle is 150 by 100.
• The circle is in position 45,20, width and height are 60,60.
• The dark lines are NOT part of the flag. They are shown as guides only.

g.fillOval(0,0,150,100) will fill an oval bounded by the whole shape. See Draw Circle

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static void drawFlag(Graphics2D g) { g.setColor(Color.white); g.fillRect(0,0,150,100); g.setColor(Color.red); }

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test text

 

 

 

 

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Flags Tutorials

Rectangles

Lines

Polygons

Stars

Repeats

Methods

Hard Problems

Now you can try any of: Rectangles Quick Quiz, Harder Problems with Rectangles Lecture 2 Support