Author: Étienne WATTEBLED - [email protected]

This project permits to use fractions in Java like 2/10, 1/3, 3/2 and so on without any lost of precision. You can use some operations like add, substract, multiply, divide, simplify...

You can easily create a fraction.

WARNING: CAN GENERATE 2 EXCEPTIONS

• FractionException : general exception
• DivideByZeroFractionException : with a division by zero
• ParseFractionException : if the parsing fails. Example: new Fraction("Hello World");

Constructors (creating fractions)

// fraction 0/1
new Fraction();

// fraction 1/3
new Fraction(1,3);

// fraction 2/3
new Fraction("2/3");

// fraction 15/1
new Fraction("15");
new Fraction(15);

Set the value of the nominator and denominator

Fraction f = new Fraction();

// 15/1
f.setValue(15);

// 1/3
f.setValues(1,3);

// 15/1
f.setValue("15");

// 1/3
f.setvalue("1/3");

// Just change the nominator (only)
f.setNominator(3);

// Just change the denominator (only)
f.setDenominator(2);

Simplificate

Fraction f = new Fraction(2,6);

// Now 1/3
f.simplify();

f = new Fraction(2,-6);

// Now -1/3
f.simplify();

f = new Fraction(2,-6);

// Now -2/6
f.simplifySymbol();

Computing

Fraction f1 = new Fraction(1,3);
Fraction f2 = new Fraction(3,4);
Fraction result = null;

// f1 + f2
result = f1.add(f2);

// f1 - f2
result = f1.substract(f2);

// f1 * f2
result = f1.multiply(f2);

// f1 / f2
result = f1.divide(f2);

// With long, it is possible
result = f1.multiply(12);

// Pow
result = f1.powNominator(3);
result = f1.powDenominator(5);
resut = f1.pow(10);

// Inverse : now 1/(1/3) = (1/1)/(1/3) = (1/1)*(3/1) = 3/1 = 3
f1.inverse();

// Inverse symbol (- on nominator)
f1.inverseSymbol();