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Thread: grow a rectangle in java

  1. #1
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    Default grow a rectangle in java

    Write a program called RectangleFive. It should have a method which, when called on an arbitrary rectangle (not just square), will make the length of each rectangle side grow to be 5 times as large, while keeping its original location (upper left corner) the same.
    import java.awt.Rectangle;
     
    public class RectangleFive
    {
    public static void main(String[] args)
    {
    Rectangle box = new Rectangle(5, 10, 20, 30);
    RectangleFive.quintupleRectangle(box);
    //Don't worry about the above syntax
     
    System.out.println(box.getX());
    System.out.println("Expected 5");
    System.out.println(box.getY());
    System.out.println("Expected 10");
    System.out.println(box.getWidth());
    System.out.println("Expected 100");
    System.out.println(box.getHeight());
    System.out.println("Expected 150");
    }
     
    public static void quintupleRectangle(Rectangle box)
    {
    int width = (int) box.getWidth();
    int height = (int) box.getHeight();
    //Don't worry about the (int) above, we haven't learned that syntax yet
     
    //Your work goes here
    }
     
    }
    Hint: Draw a picture, and read the API.
    Last edited by copeg; September 8th, 2010 at 06:01 PM. Reason: Please use the highlight tags


  2. #2
    Super Moderator copeg's Avatar
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    Default Re: grow a rectangle in java

    What exactly is your question? No one is going to do your homework for you, but if you have a particular question we will help out as best we could. For what its worth...read the API for Rectangle (Java Platform SE 6)

  3. #3
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    Default Re: grow a rectangle in java

    box.setBounds(5, 10, 5 * width, 5 * height);

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