不会填写return返回值,不填写程序出错。
import java.util.Scanner;
public class Demo10 {
public static void main(String[] args) {
Scanner scan = new Scanner(System.in);
char secret = '8';
System.out.println("请输入您想加密的内容:");
String pass = scan.next();
System.out.println("原字符串内容:" + pass);
String encryptResult = encryptAndDencrypt(pass, secret);
System.out.println("加密后的内容:" + encryptResult);
String uncryptResult = encryptAndDencrypt(encryptResult, secret);
System.out.println("解密后的内容:" + uncryptResult);
}
private static String encryptAndDencrypt(String encryptResult, char secret) {
return ;
}
}