My Window is Forced to Maximized on Java Applet/JFrame

Question

I've tried running both an Applet and a JFrame following certain YouTube tutorials, but when they run on my computer, they ignore the size I specify for the window, and forcibly open maximized and will simply not resize.

Here's a simple example Applet I ran:

package pong;

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

public class Pong extends Applet{
    final int WIDTH = 700, HEIGHT = 500;

    public void init() {
        this.resize(WIDTH, HEIGHT);
    }

    public void paint(Graphics g) {
    }

    public void update(Graphics g) {
    }
}

I cannot resize the window/panel. I don't know if this is an issue with my computer Yoga 2 Pro.

Any help is greatly appreciated.

EDIT: I think perhaps I wasn't clear enough. I am simply not managing to correctly view ANY JPanel or Applet. They display on my Yoga 2 Pro as maximized, and with their content being strange as well. In this example I'm simply trying to get a 700x500 window, but Java ignores this fact on my computer. Thanks