@@ -0,0 +1,246 @@
+// http://codingbat.com/prob/p117334%0A%0Apublic String stringSplosion(String str) %7B%0A  StringBuilder output = new StringBuilder();%0A  for (int i = 0; i %3C str.length(); ++i) %7B%0A    output.append(str.substring(0, i+1));%0A  %7D%0A  return output.toString();%0A%7D%0A

Create stringSplosion.java