Rectangle Collision

OpenGL Development
#1

I am making a collision detection method in my lwjgl game but it is not really working out. I am using Rectangles to check if they intersect. This is how I do it:

I have a Player that moves with the wasd buttons and I give him a Rectangle like this:

private Rectangle Collider;

public Player(int x, int y, int width, int height) {
		this.x = x;
		this.y = y;
		this.width = width;
		this.height = height;
		Collider = new Rectangle(x, y, width, height);
		}
		
		public Rectangle getCollider() {
		return Collider;
	}

I have an Item that looks like this:

private Rectangle Collider;

public Item(int x, int y, int width, int height) {
		this.x = x;
		this.y = y;
		this.width = width;
		this.height = height;
		Collider = new Rectangle(x, y, width, height);
		}
		
		public Rectangle getCollider() {
		return Collider;

                public void Update(){
                System.out.println("Updating Item");
                if(Canvas.iscolliding(game.player.getCollider(), this.getCollider)){
                    System.out.println("Colliding");
}
}
	}

And this is my iscolliding method:

public static boolean isColliding(Rectangle a, Rectangle b) {
		if (a.intersects(b)) {
			return true;
		} else {
			return false;
		}
	}

But it never prints colliding why? (I use the LWJGL Rectangle not the java.awt).