Point2D Double 不存储双精度

Question

所以我正在研究一个三角形类，我想使用 Point2D.Double 来存储高精度的点。import java.awt.geom.Point2D.Double;public class Triangle {private Double pointOne = new Double();private Double pointTwo = new Double();private Double pointThree = new Double();private final float PERCISION = 0.009f;public Triangle(double x1, double y1, double x2, double y2, double x3, double y3){    pointOne.x = x1;    pointOne.y = y1;    pointOne.setLocation(x2, y2);    pointOne.setLocation(x3, y3);}public Double getPointOne() {    return pointOne;}public Double getPointTwo() {    return pointTwo;}public Double getPointThree() {    return pointThree;}但是，当我在 main 中测试它并输入下面的代码时，它会打印出坐标，但精度非常低。我尝试使用浮点数，但它总是以相同的结果结束。    Triangle tri = new Triangle( 0.0000, 0.0000, 2.0008, 0.0000, 0.0000, 2.0000);    System.out.println("Point 1 coordinates: (" + tri.getPointOne().getX() + ", " + tri.getPointOne().getY() + ")");    System.out.println("Point 2 coordinates: (" + tri.getPointTwo().getX() + ", " + tri.getPointTwo().getY() + ")");    System.out.println("Point 3 coordinates: (" + tri.getPointThree().getX() + ", " + tri.getPointThree().getY() + ")");这是它打印出来的内容，以备不时之需。点 1 坐标：(0.0, 2.0)点 2 坐标：(0.0, 0.0)点 3 坐标：(0.0, 0.0)理想情况下，这就是我希望它打印出来的内容。点 1 坐标：(0.0000, 2.0008)点 2 坐标：(0.0000, 0.0000)点 3 坐标：(0.0000, 0.0000)