Fraction

public class Fraction {
	private long num1,den1;

	public Fraction(long num1, long den1) {
		this.num1 = num1;
		//check for divide by zero
		while (den1 == 0) {
			System.out.println("Denominator cannot be zero");
			//throw new IllegalArgumentException("Denominator is 0");
			System.out.println("Program is terminating");
			return;
		}
		this.den1 = den1;

	}

	public Fraction() {
		this.num1 = 0;
		this.den1 = 1;
	}

	private boolean checkIfReduced(Fraction F){
		for(long i = 1; i <= F.getDen1(); i++){
			if(F.getDen1() % i == 0){
				return false;
			}
		}
		return true;
	}

	private Fraction Reduce(Fraction F){
		//while not reduced
		while(checkIfReduced(F)){
			for(long i = 1; i <= F.getDen1(); i++){
				if(F.getDen1() % i == 0){
					F.setDen1(F.getDen1() / i);
					F.setNum1(F.getNum1() / i);
				}
			}
		}
		return F;
	}

	public Fraction Add( Fraction f){ //899/391
		//long num11, den22;
		long num11 = f.num1, den11 = f.den1;
		num11 = ( (this.num1 * f.den1) + (f.num1 * this.den1) );
		den11 =(this.den1 * f.den1);
		return new Fraction(num11,den11);
	}

	public Fraction subtract(Fraction f){
		long num11 = ( (this.getNum1() * f.getDen1()) - (f.getNum1() * this.getDen1()) );
		long den11 =(this.getDen1() * f.getDen1());
		return new Fraction(num11,den11);
	}

	public Fraction multiply(Fraction f){
		long den11 =(this.getDen1() * f.getDen1());
		long num11 = (this.getNum1() * f.getNum1());
		return new Fraction(num11,den11);
	}

	public Fraction divide(Fraction f){

		long den11 = this.den1 * f.num1;

		long num11 = this.num1 * f.den1;
		return new Fraction(num11,den11);
	}

	public void setNum1(long num1) {
		this.num1 = num1;
	}

	public void setDen1(long den1) {
		this.den1 = den1;
	}

	public long getNum1() {
		return num1;
	}


	public long getDen1() {
		return den1;
	}

	@Override
	public String toString(){
		Reduce(this);

		double result = (double)this.getNum1() / this.getDen1();
		System.out.println("Result: " + result);
		return this.getNum1() + " / " + this.getDen1();
	}
}