String Searching For A Word

I'm very new to Java, and I'm writing a code to search a string to see how many times the word "dog" is found in it. I'm not sure if this is error-free or the most efficient, but I'd like to keep it simple.

public void run()
{
 
String input = new String("The Dogman was no ordinary dog, nor man, but rather a peculiar dog-like man who barked like a dog, and panted like a dog, he even ate like a dog. He owned a dog named Doglips, and interestingly enough, his favorite food was hotdogs.");
 
println(input);
int index = -1;
int count = 0;
print("Counting dogs:");
inputarray = input.split(" ");
 
[Code] .....