查找一个圆是否在另一个圆内

您只需要在重叠之前检查一下内部，因为内部的距离小于等于重叠的距离

if (distance > (r1 + r2)) {    // No overlap    System.out.println("Circle2 does not overlap Circle1");}else if ((distance <= Math.abs(r1 - r2)) {    // Inside    System.out.println("Circle2 is inside Circle1");}else   // if (distance <= r1 + r2){   // Overlap   System.out.println("Circle2 overlaps Circle1");}

根据克里斯的评论修改答案