How Does the Modified `move()` Method Prevent Star Objects from Leaving the Frame?

The move() method in the Star class is used to move the star objects around the screen. The original implementation of this method did not properly handle the case where the star would move outside the bounds of the frame. This could cause the star to disappear or overlap with other stars, which would not be the desired behavior. The modified version of the move() method addresses this issue by checking if the star's location is outside the bounds of the frame and reversing the direction of movement if necessary. This ensures that the stars will always stay within the bounds of the frame and will not overlap with each other.

Here is the modified version of the move() method:

public void move() {
    if (location.x  frame.getContentPane().getWidth() - 20) {
        xIncr = -xIncr;
    }
    if (location.y  frame.getContentPane().getHeight() - 20) {
        yIncr = -yIncr;
    }
    translate(xIncr, yIncr);
    location.setLocation(location.x + xIncr, location.y + yIncr);
}

In this modified version, we have added checks to see if the star's location is outside the bounds of the frame. If the star's location is outside the bounds of the frame, we reverse the direction of movement so that the star will move back into the frame. This ensures that the stars will always stay within the bounds of the frame and will not overlap with each other.

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