LAB

public class Fraction {

private int numerator;

private int denominator;

public void number( int numerator, int denominator)

{

this.numerator = numerator; //把這method的區域變數numerator給予這個類別內宣告的numerator

this.denominator = denominator; //this:代表使用中的類別,也可以使用在變數名稱有重複或易於混淆時

}

public String outputstring() {

return (numerator + "/" + denominator);  //分數的表示形式

}

public Fraction add(Fraction Fraction2) //add中有2個Fraction相加，Fraction Fraction2

{                                       //為Fraction.add(Fraction)表示方式並為區隔而寫為Fraction2

Fraction countOfTemp = new Fraction();

countOfTemp.numerator = numerator*Fraction2.denominator + denominator*Fraction2.numerator;

countOfTemp.denominator = denominator*Fraction2.denominator;

//交叉相乘

return countOfTemp; 

}

public static void main(String[] args) 

{

Fraction f1 = new Fraction();

Fraction f2 = new Fraction();

f1.number(1, 2);

f2.number(1, 3);

System.out.println("f1 = " + f1.outputstring() + "\nf2 = " + f2.outputstring());

System.out.println("f1 + f2 = "+ f1.add(f2).outputstring());

 

}

}