fraction.java

来自「java2 primer plus一书源程序」· Java 代码 · 共 47 行

public class Fraction
{
    private int numerator;
    private int denominator;

    public Fraction( int numerator,
                     int denominator )
    {
        this.numerator = numerator;
        this.denominator = denominator;
    }

    public int getNumerator()
    {
        return this.numerator;
    }

    public void setNumerator( int numerator )
    {
        this.numerator = numerator;
    }

    public int getDenominator()
    {
        return this.denominator;
    }

    public void setDenominator( int denominator )
    {
        if( denominator != 0 )
        {
            this.denominator = denominator;
        }
    }

    public float getFraction()
    {
        return ( float )numerator / ( float )denominator; 
    }

    public static void main( String[] args )
    {
        Fraction f = new Fraction( 3, 4 );
        System.out.println( "3/4 = " + f.getFraction() );
    }
}