import java.awt.*;
import java.applet.Applet;

public class ScreenSaver extends Applet {
    
    // These are instance variables, so they can be used
    // everywere inside this class.
    int x1, x2, y1, y2;  // the coordinates of the line
    int colour;          // the colour of the line
    
    public void paint(Graphics g) {
        
        // repeat 100 times
        for (int i= 0; i<100; i++) {
            
            // write code here that calls methods random
            // and chooseColour
            // and then draws a line using x1, x2, y1, and y2
            
            
        }
    }
    
    // Sets the instance variables.
    public void random() {
        
        // assigns to x an int between 0 and 599
        x1= (int)Math.floor(600*Math.random());
        
        // write code here to assign a different random value 
        // between 0 and 599 to each of x2, y1, and y2
        
        
        // write code here to assign a random value (between
        // two values of your choice) to colour
        
        
    }
    
    // Sets the drawing colour.
    public void chooseColour(Graphics g) {
        
        // write code here which uses a switch statement on
        // colour to set the drawing colour (e.g., for the
        // case where colour is 0, you can choose to set
        // the drawing colour to blue with the code:
        // g.setColor(Color.blue);)
        
        
    }
}