java 编写程序创建Point类要求如下：一个名为distancedouble xdouble y的方法返回从该点到指定x和y坐标的指定点之间的距离

以下是Java编写的Point类，包含distance方法：

public class Point {
    private double x;
    private double y;
    
    public Point(double x, double y) {
        this.x = x;
        this.y = y;
    }
    
    public double distance(double x2, double y2) {
        double dx = x2 - x;
        double dy = y2 - y;
        return Math.sqrt(dx*dx + dy*dy);
    }
}

使用方法：

Point p = new Point(0, 0);
double d = p.distance(3, 4);
System.out.println(d); // 输出5.0