Gaston
Gaston

Reputation: 189

How can I make a shape transparent in Java?

I want to make a shape transparant (the shape should be semi-opaque). How can I do this in Java? This is a part of my code:

protected void paintComponent(Graphics g) {
  super.paintComponent(g);
  g.setColor(Color.red);
  g.fillOval(40, 40, 40, 40);
}

Upvotes: 1

Views: 2743

Answers (1)

Vince
Vince

Reputation: 15156

The color you are currently using, Color.RED, does not use alpha, which is basically how transparent your color will be.

g.setColor(new Color(255, 0, 0, 125));

This will create a new color, using RGBA. The color I created uses 255 for red, 0 for blue and 0 for green. 125 is the alpha

Upvotes: 2

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