Help getting user input into my fraction calculating program.

[evilmonkey]

I am very new to programming as well as Java and this is my first post so please forgive me if this is not quite posted correctly. My Problem is that I have only been using scanner to get user input into most of the exercises I have done. This exercise is asking for a user to enter two fractionslike "1/3" or "5/8". Scanner doesn't work and I don't know of another way to get this done. I think that I will have to somehow strip the "/" out and use the integers for a numerator and denominator. I've been able to make it work by hard coding the variables into the main method. Any help with this would be very much appreciated.

import java.util.Scanner;
public class Main {
 
    /** Creates a new instance of Main */
    public Main() {
    }
 
    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
    Scanner input = new Scanner(System.in);
 
 
 
    Fraction f1 = new Fraction(3,5);
 
    Fraction f2 = new Fraction(1,6);
 
    System.out.println();        
    System.out.println(" This program preforms arithmetic" +
                       " operations on two fractions."); 
    System.out.println(); 
    System.out.println(); 
    System.out.println("Enter first fraction: "); 
    //f1 = input.nextInt();
    System.out.println(f1);
 
    System.out.println("Enter second fraction: "); 
    //f2 = input.nextInt();
    System.out.println(f2); 
 
    Fraction f3= f1.add(f2);
    System.out.println("Sum: "+f3);
    Fraction f4= f1.subtract(f2);
    System.out.println("Difference: "+f4);
    Fraction f5= f1.multiply(f2);
    System.out.println("Product: "+f5);
    Fraction f6= f1.divide(f2);
    System.out.println("Quotient: "+f6);
    System.out.println(); 
    }
 
 
 
 
 }// end Main 
 
// Separate fraction class
public class Fraction {
 
        private int numerator;
        private int denominator;
 
 
    public Fraction(int num, int denom) {
    numerator = num;
    denominator= denom;       
    }
 
    public Fraction(Fraction f)
    {
    numerator = f.numerator;
    denominator = f.denominator;
    }
 
    public int getNumerator(){
    return numerator;
    }
 
    public int getDenominator(){
    return denominator;
    }
 
    public void setNumerator(int num){
    numerator = num;
    }
 
    public void setDenominator(int denom){
    denominator= denom;
    }
 
    public Fraction add(Fraction f){
    int num = numerator  * f.denominator + f.numerator * denominator;
    int denom = denominator * f.denominator;
    return new Fraction(num,denom);
    }
 
    public Fraction subtract(Fraction f){
    int num = numerator  * f.denominator - f.numerator * denominator;
    int denom = denominator * f.denominator;
    return new Fraction(num,denom);
    }
 
    public Fraction multiply( Fraction f ){
    return new Fraction ( numerator * f.numerator, 
                          denominator * f.denominator);
    }
 
    public Fraction divide( Fraction f) {
    int temp = f.numerator;
    f.numerator = f.denominator;
    f.denominator = temp;
    return multiply(f);
    }
 
    public String toString(){
    return numerator + "/" + denominator;
    }
 
    public Fraction mult(Fraction f) {
    numerator *= f.numerator;
    denominator *= f.denominator;
 
    return this;
    }
 
 
}
 

[horace1]

you could set the Scanner delimiter to / then read the numerator, reset the delimiter to whitespace then read the denominator, e.g.

        Pattern whitespace=s.delimiter();       
        s.useDelimiter("/");                            // set delimiter as /
        int i = s.nextInt();                            // read numerator
        String test = s.findWithinHorizon(".",0);       // read the /
        s.useDelimiter(whitespace);                     // reset delimeter to whitespace
        int j = s.nextInt();                            // read the denominator
 

[evilmonkey]

you could set the Scanner delimiter to / then read the numerator, reset the delimiter to whitespace then read the denominator, e.g.

        Pattern whitespace=s.delimiter();       
        s.useDelimiter("/");                            // set delimiter as /
        int i = s.nextInt();                            // read numerator
        String test = s.findWithinHorizon(".",0);       // read the /
        s.useDelimiter(whitespace);                     // reset delimeter to whitespace
        int j = s.nextInt();                            // read the denominator
 

Thank you for the help horace1,
If I understand correctly I can set the delimeter in the Scanner.
Should it look like this

Scanner input = new Scanner( / , System.in ); 

Or am I way off track?

[horace1]

Thank you for the help horace1,
If I understand correctly I can set the delimeter in the Scanner.
Should it look like this

Scanner input = new Scanner( / , System.in ); 

Or am I way off track?

I managed to miss the declaration of Scanner, try this program

// read a fraction in form 6/7
 
import java.util.Scanner;
import java.util.regex.*;
 
public class ScanFraction {
    public static void main(String[] args)  {
        Scanner s = new Scanner(System.in);
        Pattern whitespace=s.delimiter();       
        s.useDelimiter("/");                            // set delimiter as /
        int i = s.nextInt();                            // read numerator
        String test = s.findWithinHorizon(".",0);       // read the /
        s.useDelimiter(whitespace);                     // reset delimeter to whitespace
        int j = s.nextInt();                            // read the denominator
        System.out.println("i = " + i + " j = " + j);
    }
}
 
 

[evilmonkey]

I managed to miss the declaration of Scanner, try this program

// read a fraction in form 6/7
 
import java.util.Scanner;
import java.util.regex.*;
 
public class ScanFraction {
    public static void main(String[] args)  {
        Scanner s = new Scanner(System.in);
        Pattern whitespace=s.delimiter();       
        s.useDelimiter("/");                            // set delimiter as /
        int i = s.nextInt();                            // read numerator
        String test = s.findWithinHorizon(".",0);       // read the /
        s.useDelimiter(whitespace);                     // reset delimeter to whitespace
        int j = s.nextInt();                            // read the denominator
        System.out.println("i = " + i + " j = " + j);
    }
}
 
 

I've got to take my wife to dinner but I wanted to thank you for your reply again I'll be trying this when I return home. thanks again horace1, I think I should have tried posting a long time ago.

[evilmonkey]

I've got to take my wife to dinner but I wanted to thank you for your reply again I'll be trying this when I return home. thanks again horace1, I think I should have tried posting a long time ago.

Ha! Success!

[Ganon11]

You might even say, "Victory is mine!"

Glad to see you got the solution.