How to convert decimal to fractions?

Question

What I need to convert decimal to fractions. It is easy to convert to 10\'s feet.

1.5 => 15/10

This can do via this code:

Answer 1

I prepared a solution for this question. Maybe it's look like primitive but working. I tested many decimal number. At least it can converting 1.5 to 3/2 :)

public String kesirliYap(Double sayi){
    String[] a=payPaydaVer(sayi);
    return a[0]+"/"+a[1];
}
public String[] payPaydaVer(Double sayi){
long pay;
long payda;

  DecimalFormat df=new DecimalFormat("#");
    df.setRoundingMode(RoundingMode.FLOOR);
    String metin=sayi.toString();        
    int virguldenSonra=(metin.length() -metin.indexOf("."))-1;
    double payyda=Math.pow(10,virguldenSonra);
    double payy=payyda*sayi;
    String pays=df.format(payy);
    String paydas=df.format(payyda);
    pay=Long.valueOf(pays);
    payda=Long.valueOf(paydas);


   String[] kesir=sadelestir(pay,payda).split(",");

   return kesir;
}

private String sadelestir(Long pay,Long payda){
    DecimalFormat df=new DecimalFormat("#");
    df.setRoundingMode(RoundingMode.FLOOR);
    Long a=pay1;i--){
      double payy=pay/i;
      double paydaa=payda/i;
      String spay=df.format(payy);
      String spayda=df.format(paydaa);
      Long lpay=Long.valueOf(spay);
      Long lpayda=Long.valueOf(spayda);
      if((payy-lpay)==0&&(paydaa-lpayda)==0){
          b=df.format(pay/i);
          c=df.format(payda/i);
          sayac++;
          break;
      }

    }

    return sayac>0 ?  b+","+c:pay+","+payda;
}