我已经创建了一个Triangle类程序,但我需要一个测试器类。在测试器类中,它必须要求用户输入点,然后它将计算边,因此第四。如何让用户在测试仪中输入x1和y1,然后在三角形类中获取数据?顺便说一下,我需要使用Scanner。
import java.util.Scanner;
public class Triangle {
private double x1;
private double y1;
private double x2;
private double y2;
private double x3;
private double y3;
private double side1;
private double side2;
private double side3;
private double angleA;
private double angleB;
private double angleC;
public Triangle(double a1, double a2, double b1, double b2, double c1, double c2){
x1=a1;
y1=a2;
x2=b1;
y2=b2;
x3=c1;
y3=c2;
}
public double getSide1(){
side1 = Math.sqrt(Math.pow(x2-x1,2)+Math.pow(y2-y1,2));
return side1;
}
public double getSide2(){
side2 = Math.sqrt(Math.pow(x3-x2,2)+Math.pow(y3-y2,2));
return side2;
}
public double getSide3(){
side3 = Math.sqrt(Math.pow(x3-x1,2)+Math.pow(y3-y1,2));
return side3;
}
public double getAngleA(){
angleA = side1 + side2 + side3 - (side2 * side3);
return angleA;
}
public double getAngleB(){
angleB = side2 + side1 + side3 - (side1 * side3);
return angleA;
}
public double getAngleC(){
angleC = side3 + side1 + side2 - (side1 * side2);
return angleA;
}
}
答案 0 :(得分:0)
您可以通过以下方式使用Scanner
课程:
....
private static Scanner input;
public static void main(String[] args) {
input = new Scanner(System.in);
//... Read x1 from the console.
System.out.print("Enter x1 : ");
int x1 = input.nextInt();
//... Read y1 from the console.
System.out.print("Enter y1: ");
int y1 = input.nextInt();
System.out.print("x1=" + x1 + ", y1=" + y1);
}
....