Added sum of fraction program file

SumOfFraction.java

@@ -0,0 +1,37 @@
+class SumOfFraction
+{ 	
+    static int gcd(int a, int b)
+    {
+    if (a == 0)
+        return b;
+    return gcd(b%a, a);
+    }
+    static void lowest(int den3, int num3)
+{
+    // Finding gcd of both terms
+    int common_factor = gcd(num3,den3);
+
+    // Converting both terms into simpler
+    // terms by dividing them by common factor
+    den3 = den3/common_factor;
+    num3 = num3/common_factor;
+    System.out.println(num3+"/"+den3);
+}
+    void addFraction(int num1, int den1, int num2, int den2)
+    {
+        int den3 = gcd(den1,den2);
+
+    // Denominator of final fraction obtained
+    // finding LCM of den1 and den2
+    // LCM * GCD = a * b
+    den3 = (den1*den2) / den3;
+
+    // Changing the fractions to have same denominator
+    // Numerator of the final fraction obtained
+    int num3 = (num1)*(den3/den1) + (num2)*(den3/den2);
+
+    // Calling function to convert final fraction
+    // into it's simplest form
+    lowest(den3,num3);	
+    }
+}