@@ -0,0 +1,282 @@
+// http://codingbat.com/prob/p132118%0A%0Apublic String conCat(String a, String b) %7B%0A  if (a.length() == 0) %7B%0A    return b;%0A  %7D%0A  else if (b.length() == 0) %7B%0A    return a;%0A  %7D%0A  else %7B%0A    return (a.charAt(a.length()-1) == b.charAt(0)) ? a.substring(0, a.length()-1) + b : a + b;%0A  %7D%0A%7D%0A

Create conCat.java