add fibonacci series in java (#109)

closes: #105

Author: lakshayg

fibonacci/Fibonacci.java

@@ -0,0 +1,25 @@
+import java.util.Scanner;
+
+class Fibonacci {
+  public static void main(String[] args) {
+    System.out.print("Enter the number of terms: ");
+    Scanner scan = new Scanner(System.in);
+    long num = scan.nextLong();
+    printFibonacciSeries(num);
+  }
+
+  private static void printFibonacciSeries(long num) {
+    long a = 1, b = 1;
+    StringBuilder sb = new StringBuilder();
+    while (num-- > 0) {
+      sb.append(a);
+      if (num > 0) {
+        sb.append(", ");
+      }
+      long tmp = a;
+      a = b;
+      b = b + tmp;
+    }
+    System.out.println(sb);
+  }
+}