我不明白这种方法错误

我正在制作一个加密程序，用户输入一个单词，然后模式然后将拼字的单词。我不明白这种方法错误

这里是我的错误：

1 error found: 
    [line: 42] 
Error: The method charArray(int) is undefined for the type Cipher

这里是我的代码：

import java.util.Scanner; 

public class Cipher 
{ 
    public static char cipher (int j){ 
    char[] cipher1 = {'a','b','c','d','e','f','g'}; 
    j = (int) (Math.random() * cipher1.length);//choose a random element from the array 
    return cipher1[j]; 
    } 

    public static void main (String[] args){ 

    System.out.print("Please type a sentence to be encrypted\n"); 
    Scanner inputScanner = new Scanner(System.in); 
    String input = inputScanner.next(); 
     System.out.print("please enter"); 
    input = input.toLowerCase(); 
    int yu = input.length(); 
    char[] charArray = input.toCharArray(); 

     int w=1; 
    do{ 
    try{ 
    w=2; 
     System.out.println("please entrer pattern"); 
     String hello = inputScanner.next(); 
     int hello2= Integer.parseInt(hello); 
     if(hello2<0){ 
     System.out.println("please enter proper number"); 
     w=1; 
     } 
    }catch (NumberFormatException f){ 
     System.out.println("please enter proper number"); 
    } 

    }while (w==1); 

    System.out.print("your encrypted code is "); 

    for(int i = 0; i < yu; i++){ 
    System.out.print(charArray(i)); //THIS IS WHERE ERROR IS HIGHLIGHITNG 
    for(int q = 0; q <= w; q++){ 
    System.out.print(cipher(1)); 
    } 
    } 
    } 
}

来源

2014-04-05 user3331406

您是否在代码中的任何位置创建了一个名为'charArray'的方法？ –

它不是我用它来发送数组 – user3331406