Need to rotate image around the axis

Question

Hi, I'm using this ti rotate the image, it works but I need to rotate the image around the center of the image, center axis.
I don't understad what is the meaning of values 50 and 60, and what I need to write instead?
public void paintComponent_new(Graphics g){
super.paintComponent(g);
Graphics2D g2 = (Graphics2D)g;
g2.rotate (Math.toRadians(angle),60,60);
g2.drawImage(pre.getImage(), 50, 50, this);
g2.dispose();
}

Answer 1

Using that method, the rotation occurs around the point (x,y). The rotation is a measure of theta radians. One radian translates to 180/PI degrees; thus, there are 2*PI radians in 360 degrees.
So if, for example, you wanted to rotate round the point (40,40) exactly 90 degrees, you could use
Graphics2D g2d = ...;
g2d.rotate(Math.PI/2, 40, 40);Note that this rotation is a translation of the view, not a translation of any contents. That means that anything drawn to the Graphics2D object will appear as if rotated in that fashion. Therefore, if you draw an image onto that Graphics2D object after calling rotate in that fashion, the image will be rotated as well.