StdDraw Cannot be Resolved??

I found some code online to draw a pink heart.. sort of a valentine's day heart.. I would like to add to it and customize it some... But I can't get it to work as-is.. I get a compile error that "StdDraw Cannot be resolved" ... Here is the code.. Thanks for any input!!

Code :

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import java.awt.color.*;
import java.awt.Graphics;
import javax.swing.JPanel;
 
public class Heart {
    public static void main(String[] args) {
        StdDraw.setXscale(-1.5, +1.5);
        StdDraw.setYscale(-1.5, +1.5);
        StdDraw.setPenColor(StdDraw.PINK);
 
        // draw diamond
        double[] xs = { -1,  0, 1, 0 };
        double[] ys = {  0, -1, 0, 1 };
        StdDraw.filledPolygon(xs, ys);
 
        // circles
        StdDraw.filledCircle(+0.5, 0.5, 1 / Math.sqrt(2));
        StdDraw.filledCircle(-0.5, 0.5, 1 / Math.sqrt(2));
    }
 
}

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Hi there!
I'm pretty sure that the class StdDraw is not in the default java source. You will need to use this code to get it to work StdDraw.java

Quote:

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Originally Posted by er1111

Hi there!
I'm pretty sure that the class StdDraw is not in the default java source. You will need to use this code to get it to work StdDraw.java

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Holy crow!! Is there an easier way to do this ? I'm just trying to draw a heart... lol... can this be similar to drawing a smiley face? I can do that!! 8-}