Enter any string, such as: "ABDEE23DJFD343DPODDFE4CDD5CCV!23RR". Take out all the letters in the string. The order cannot be changed! and turn the uppercase letters into lowercase, lowercase letters to uppercase!

Package Lovo. Linyoujia;

Import Java.util.Scanner;

public class Java {

@param args

public static void Main (string[] args) {

TODO auto-generated Method Stub

String bs = "ASDFJVJADSFFVAADFKFASAFFDSASDFFADSAFAFSAFDADSFAAFD";

int count = 0;

char[] Chararray = Bs.tochararray ();

for (int i = 0; i < bs.length ()-1; i++) {

if (chararray[i] = = ' A ' && chararray[i + 1] = = ' F ') {

count++;

}

}

System.out.println (count);

Enter any string, such as: "ABDEE23DJFD343DPODDFE4CDD5CCV!23RR". Take out all the letters in the string. The order cannot be changed! and turn the uppercase letters into lowercase, lowercase letters to uppercase!