Button Functionality (over, pressed and down)

Newbie & Debugging Questions
#1

I’m creating a simple button class, with Slick2D library.
However, I have a problem, on how to create a buttonReleased function.
So problem is, I click the button, and it already executes, with out releasing a mouse click.
What I want to achieve, is, I click the button, but execute only if a mouse click is released inside a button area.


    public boolean isActionPerformed(Input input, int mx, int my) throws SlickException {
        if (buttonContains(mx, my)) {
            if (buttonPressed(input)) {
                return true;
            }
            if (buttonDown(input)) {
            }
        }
        return false;
    }
    
    public boolean buttonContains(int mx, int my) throws SlickException {
        if ((mx > minX && mx < maxX) && (my > minY && my < maxY)) {
            buttonState = ButtonState.Over;
            return true;
        }
        buttonState = ButtonState.Normal;
        return false;
    }
    
    public boolean buttonPressed(Input input) throws SlickException {
        if (input.isMousePressed(Input.MOUSE_LEFT_BUTTON)) {
            return true;
        }
        return false;
    }

    public boolean buttonDown(Input input) throws SlickException {
        if (input.isMouseButtonDown(Input.MOUSE_LEFT_BUTTON)) {
            buttonState = ButtonState.Down;
            return true;
        }
        return false;
    }