Incomparable types: char and string

import java.util.*;
import java.lang.*;
public class MyClass {
  public static void main(String args[]) {
    Scanner in = new Scanner(System.in);
    int count = 0;
    String inputEntry = in .nextLine();
    String inputCharacter = in .nextLine();
    if (inputCharacter.length() != 1) {
      System.out.println("Please enter single character");
System.exit(0);

    } else {
      for (int i = 0; i < inputEntry.length(); i++) {
        if (inputEntry.charAt(i) == inputCharacter) {
          count++;
        }
      }
      System.out.println("There is " + count + " occurence(s) of '" + inputCharacter + "' in " + inputEntry);
    }
  }
}