`try
    {
    String s = " LITTLE RABBIT";
    s.toUpperCase();
    int l = s.length();
    int a =0;
    char ch1, ch2;
    for( int i =0; i < l; i++)
    {
        ch1 = s.charAt(i);
        ch2 = s.charAt(i+1);
        if( ch1 == ch2)
        {
            a++;
        }
    }
    System.out.println(a);
}
catch(StringIndexOutOfBoundsException e)
{
    System.out.println(e);
}`