java知道四个点坐标,怎么判断一个点是不是在这个矩形区域内(矩形可能是...答:写法不是很规范,但是思路都在,不限于矩形 class Quar{ public static boolean isInside(Point left,Point top,Point right,Point buttom,Point pointToCheck){ Line line1=Line.getLine(left, top),line2=Line.getLine(top, right),line3=Line.getLine(right, buttom),line4=Line.getLine(buttom,...