Java Programs - My name is khan

my name is khan program........

 public static void minWindow(String S, String T)
{
int[] needToFind = new int[256];
int[] hasFound = new int[256];
for (int i = 0; i < T.length(); ++i)
{
needToFind[T.charAt(i)]++;
}
int count = 0;
int minWindowSize = Integer.MAX_VALUE;
int start = 0, end = 0;
String window = "";
for (; end < S.length(); end++)
{
if (needToFind[S.charAt(end)] == 0)
{
continue;
}
char c = S.charAt(end);
hasFound[c]++;
if (hasFound[c] <= needToFind[c])
{
count++;
}
if (count == T.length())
{
while (needToFind[S.charAt(start)] == 0
|| hasFound[S.charAt(start)] > needToFind[S.charAt(start)])
{
if (hasFound[S.charAt(start)] > needToFind[S.charAt(start)])
{
hasFound[S.charAt(start)]--;
}
start++;
}
if (end - start + 1 < minWindowSize)
{
minWindowSize = end - start + 1;
window = S.substring(start, end + 1);
}}}
output1= window;