java求两点之间的斜率

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定义坐标实体类

public class Point {
	private double x;
    private double y;
    public Point(double x,double y){
        this.x=x;
        this.y=y;       
    }
    public double getX() {
        return x;
    }
    public void setX(double x) {
        this.x = x;
    }
    public double getY() {
        return y;
    }
    public void setY(double y) {
        this.y = y;
    }
}

求斜率

public class Line {
	private Point point;
    private double slope; //斜率
 
    public double getSlope() {
		return slope;
	}

	public void setSlope(double slope) {
		this.slope = slope;
	}

	public boolean isParallel(Line line) { //比较两个斜率是否相同
        if(this.slope==line.slope)return true;
        return false;
    }
 
    public Line(Point point,double slope){
        this.point=point;
        this.slope=slope;
    }
    public Line(Point p1,Point p2){
        this(p1,p2.getY()-p1.getY()/(p2.getX()-p1.getX()));//调用上面的构造器，求得斜率
         
    }
    public Line(int a,int b){
        this(new Point(a,0),new Point(0,b));
    }
    public static void main(String []args){
    	Point p1 = new Point(1,1);
    	Point p2 = new Point(2,2);
        Line l1=new Line(p1,p2);
        System.out.print(l1.getSlope());
    }
}