Code to get file extensions

Code
----------
import java.io.File;

class GetFileExt {

public static void main(String args[]) {

File f = new File("C:/java");
File[] files = f.listFiles();
for (int i = 0; i < files.length; i++) {
String name = files[i].getName();
if (!files[i].isDirectory()) {
if (name.contains(".")) {
System.out.println("Extension for " + name + " is " + name.substring(name.lastIndexOf('.'), name.length()));
}
}
}
}
}

Sample Output

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Extension for Notes.txt is .txt

Extension for One.html is .html