Benutzer müssen wählt eine Option aus der bietet die Optionen.Wenn der Benutzer wählt Dreieck, fordert das Programm den Benutzer für Koordinaten der Ecken und berechnen Text den Umfang des Dreiecks. Ich kann die Fehler nicht beheben.Berechnen Sie den Umfang des Dreiecks und den Umfang des Kreises mit Methoden
import java.util.*;
public class Menu
{
public static void main (String[] args)
{
int userOption =0;
userOption = myMenu();
System.out.println("User selected Option"+userOption);
if (userOption==1)
{
System.out.println("The perimetre of your triangle is" + getPerimeter(trianglePrompt()));
}
//else if (userOption==2)
//{
//System.out.println("The circumference of your circle is" + circle(circlePrompt()));
//}
}
public static int myMenu(){
int userOption;
Scanner myInput=new Scanner(System.in);
do {
System.out.println("Select one of the following options:");
System.out.println(" 1. Triangle");
System.out.println(" 2. Circle");
System.out.println(" 3. Exit");
userOption= myInput.nextInt();
// To read a number of type float, use : myInput.nextFloat();
// To read a character use : (myInput.next()).charAt(0);
if (userOption==3){
System.out.println("Bye");
System.exit(0);
}
} while (userOption !=1 && userOption !=2);
return userOption;
}
//METHOD TO SCAN RADIUS FROM USER
public static double circlePrompt()
{
double radius;
Scanner myRadius= new Scanner(System.in);
do
{
System.out.println("Input a radius of a circle: ");
radius= myRadius.nextDouble();
if(radius<0)
System.out.println("You must input a positive radius");
}
while (radius<0);
return radius;
}
//METHOD TO CALCULATE THE CIRCUMFERENCE
public static double circle(double radius)
{
return (2*radius*Math.PI);
}
// METHOD TO SCAN 6 COORDINATES OF TRIANGLE
private Point p1, p2,p3;
public int trianglePrompt(int x1, int y1, int x2, int y2, int x3, int y3)
{
//double x1;
Scanner scanObject = new Scanner(System.in);
System.out.println("Input x1 of a Triangle : ");
x1= scanObject.nextInt();
System.out.println("Input x1 of a Triangle : ");
x2= scanObject.nextInt();
System.out.println("Input x1 of a Triangle : ");
x3= scanObject.nextInt();
System.out.println("Input x1 of a Triangle : ");
y1= scanObject.nextInt();
System.out.println("Input x1 of a Triangle : ");
y2= scanObject.nextInt();
System.out.println("Input x1 of a Triangle : ");
y3= scanObject.nextInt();
//return x1;
}
p1 = new Point(x1,y1);
p2 = new Point(x2,y2);
p3 = new Point(x3,y3);
public double getSideA()
{
double length = p1.distance(p2);
return length;
}
public double getSideB()
{
double length = p2.distance(p3);
return length;
}
public double getSideC()
{
double length = p3.distance(p1);
return length;
}
//METHOD TO CALCULATE PERIMETRE OF TRIANGLE BY ADDING ALL THREE SIDES
public int getPerimeter()
{
int as = getSideA(), bs = getSideB(), cs = getSideC();
return (as + bs + cs);
}
}
Fehler:
Menu.java:108: error: <identifier> expected
p1 = new Point(x1,y1);
^
Menu.java:109: error: <identifier> expected
p2 = new Point(x2,y2);
^
Menu.java:110: error: <identifier> expected
p3 = new Point(x3,y3);
^
3 errors
Dies ersetzt nur den aktuellen Kompilierungsfehler durch einen anderen. Wenn Sie diesen zweiten Kompilierfehler beheben, wird das Programm weiterhin nicht funktionieren. Also diese Antwort ist nicht besonders nützlich, daher mein Downvote. –