この1つのコードでエラーメッセージが表示され続けます。私はそれを宣言し、さまざまな方法でそれを渡すことを試みました。コードがそれほど進んでいない場合は、お詫び申し上げます。私はまだ初心者です。
/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/
package javaapplication5;
import java.util.Scanner;
/**
*
* @author period3
*/
public class JavaApplication5 {
/**
* @param args the command line arguments
*/
public static void main(String[] args) {
double theresult;
theresult = area(double radius);
Scanner reader;
reader = new Scanner (System.in);
System.out.println("Please enter the coordinates of a circle:");
newLine();
System.out.println("Outside point:");
newLine();
System.out.println("x1:");
int x1 = reader.nextInt();
newLine();
System.out.println("y1:");
int y1 = reader.nextInt();
newLine();
System.out.println("Center Point:");
newLine();
System.out.println("x2:");
int x2 = reader.nextInt();
newLine();
System.out.println("y2:");
int y2 = reader.nextInt();
System.out.println("The area of the circle is" + theresult);
}
public static double distance(int x1, int y1, int x2, int y2)
{
double dx = x2 - x1;
double dy = y2 - y1;
double dsquared = dx*dx + dy*dy;
double result = Math.sqrt (dsquared);
return result;
}
public static double area(int x1, int y1, int x2, int y2) {
double radius = distance (x1, y1, x2, y2);
return radius;
}
public static double area(double radius)
{
double areaCircle;
areaCircle = (3.14 * (radius * radius));
return areaCircle;
}
//NewLine Method
public static void newLine () {
System.out.println ("");
}
}
24行目のエラーメッセージ(結果= area(double radius):
unexpected type
required: value
found: class
'.class' expected
';' expected
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