這個「move()」方法如何將星形物體保持在幀邊界內？

提供的程式碼片段中的 move 方法用於更新 Star 物件的位置。它透過檢查與框架邊緣的碰撞來確保星星保持在框架的邊界內。

這是修改後的移動方法：

public void move() {
    // Check if the star has reached the left or right edge of the frame
    if (location.x < 0 || location.x > frame.getContentPane().getWidth() - 20) {
        // Reverse the x direction of movement
        xIncr = -xIncr;
    }

    // Check if the star has reached the top or bottom edge of the frame
    if (location.y < 0 || location.y > frame.getContentPane().getHeight() - 20) {
        // Reverse the y direction of movement
        yIncr = -yIncr;
    }

    // Update the location of the star based on its speed
    translate(xIncr, yIncr);

    // Update the location of the center of the star
    location.setLocation(location.x + xIncr, location.y + yIncr);
}

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