good day, i see a error, advise ?

[FrankOcean11]

when i run this code i get this part of the code highlighted why?
Planet[] planets = new Planet[10];

/**

• Gravitational Attraction (3D)
• by Daniel Shiffman.
  *
• Adapted for dome projection by Andres Colubri
• Simulating gravitational attraction
• G ---> universal gravitational constant
• m1 --> mass of object support smaller aperture domes #1
• m2 --> mass of object recreate planetarium repo #2
• d ---> distance between objects
• F = (G_m1_m2)/(d*d)
  *
• For the basics of working with PVector, see
• http://processing.org/learning/pvector/
• as well as examples in Topics/Vectors/
• */

import codeanticode.planetarium.*;

// A bunch of planets
Planet[] planets = new Planet[10];
// One sun (note sun is not attracted to planets (violation of Newton's 3rd Law)
Sun s;

// An angle to rotate around the scene
float angle = 0;

void setup() {
size(800, 800, Dome.RENDERER);
smooth();
// Some random planets
for (int i = 0; i < planets.length; i++) {
planets[i] = new Planet(random(0.1, 2), random(-width/2, width/2), random(-height/2, height/2), random(-100, 100));
}
// A single sun
s = new Sun();
}

void pre() {
for (int i = 0; i < planets.length; i++) {
// Sun attracts Planets
PVector force = s.attract(planets[i]);
planets[i].applyForce(force);
// Update and draw Planets
planets[i].update();
}
}

void draw() {
background(0);

// Setup the scene
lights();

translate(width/2, height/2, 300);

rotateY(angle);

// Display the Sun
s.display();

// All the Planets
for (int i = 0; i < planets.length; i++) {
planets[i].display();
}
}

// Called after rendering all the faces, but before the dome sphere,
// so it can be used to draw stuff on the corners of the screen.
void border() {
perspective();
camera();
background(255);
fill(0);
text("FPS: " + frameRate, 20, 20);
}

void post() {
// Rotate around the scene
angle += 0.003;
}

[codeanticode]

Hi, it seems that you sketch is missing part of the code, you should have the definition of the class Planet somewhere, either down below in the main sketch code, or on a separate tab.

[FrankOcean11]

thanks