我创建了一个类,该类设计为取2个分数,每个分数都有一个分子和分母,然后添加它们,输出另一个分数。Java-调用方法的调用实例?
当我编译程序,我得到一个涉及问题:
分数F3 =新Fraction.add(F1,F2);在main方法
错误:类型比$添加未找到
如果我做的一切一类的程序将运行,但我希望所有的方法,以严格的Fraction类和调用UseFraction类中的分数。
import java.io.*;
import java.util.*;
import java.text.*;
public final class Fraction
{
private int numerator, denominator;
public Fraction (int numerator, int denominator) throws IllegalArgumentException
{
this.numerator = numerator;
if (denominator == 0)
{
throw new IllegalArgumentException();
}
this.denominator = denominator;
}
//As an instance method
public void add (Fraction F)
{
this.numerator = this.numerator * F.denominator + this.denominator * F.numerator;
this.denominator = this.numerator * this.denominator;
}
//As a static method
public static Fraction add (Fraction F1, Fraction F2)
{
return new Fraction (F1.numerator * F2.denominator + F1.denominator * F2.numerator, F1.numerator);
}
//@ Override
public String toString()
{
return (this.numerator + "/" + this.denominator);
}
}
public class UseFraction
{
public static void main (String str[]) throws IOException
{
BufferedReader stdin = new BufferedReader (new InputStreamReader (System.in));
Fraction F1 = new Fraction (5, 7); // first fraction constructor
Fraction F2 = new Fraction (3, 8); // second fraction constructor
Fraction F3 = new Fraction.add (F1, F2); // addition
System.out.println ("The sum is " + F3);
}
}