What is the output?

public class Tree {
    private String color; // Instance variable to hold the color of the tree
    
    // Constructor to initialize Tree objects with a color
    public Tree(String color) {
        this.color = color;
    }
    
    // Method to change the color of one tree to the color of another
    public static void change(Tree t1, Tree t2) {
        String color = t2.getColor();
        t1.setColor(color);
    }
    
    // Accessor method to get the color of the tree
    public String getColor() {
        return color;
    }
    
    // Mutator method to set the color of the tree
    public void setColor(String color) {
        this.color = color;
    }
    
    // Main method to run the program
    public static void main(String[] args) {
        Tree olive = new Tree("Green");
        Tree almond = new Tree("Brown");
        change(olive, almond);
        System.out.println(olive.getColor()); // This will print "Brown"
    }
}