Java 当输入no时,进程不会终止
正如您可以看到的,当我输入“y”程序工作时,它会提示用户输入数组的大小,但当我输入“n”而不是终止程序时,它会提示用户输入数组的大小 我如何解决这个问题Java 当输入no时,进程不会终止,java,arrays,object,boolean,Java,Arrays,Object,Boolean,正如您可以看到的,当我输入“y”程序工作时,它会提示用户输入数组的大小,但当我输入“n”而不是终止程序时,它会提示用户输入数组的大小 我如何解决这个问题 提前谢谢你刚刚注意到你有s.charAt(0)!='N’和s.charAt(0)!='n'在while循环中,并在循环中递归调用相同的函数 如果(s.charAt(0)!='N'和&s.charAt(0)!='N')使用String.startsWith()方法,则将其更改为 但它也应该适用于您的方法,我正在查看它。:) 不,它没有,这是我以前
提前谢谢你刚刚注意到你有
s.charAt(0)!='N’和s.charAt(0)!='n'
在while循环中,并在循环中递归调用相同的函数
如果(s.charAt(0)!='N'和&s.charAt(0)!='N')使用String.startsWith()方法,则将其更改为
但它也应该适用于您的方法,我正在查看它。:) 不,它没有,这是我以前拥有的,它不起作用。谢谢,我没有意识到,当它在while循环中时,通过将while循环放在那里,它不会再次检查条件,这不会使它变得更复杂吗?因为如果s包含n和n,它将返回false@user1787811否,如果s包含n
,它将不检查第二个操作数。但是你的方法应该仍然有效。。我在看它
package homework4;
import java.util.Scanner;
public class Prog4 {
static Scanner scanner = new Scanner(System.in);
public static void main(String[] args)
{ CreditCardNumber[] cred1;
CreditCardNumber cred2 = getInput();
Display("The complete number from your input:", cred2);
cred1 = getInputArray();
DisplayArray(cred1);
TryAnother(cred1);
}
public static CreditCardNumber getInput() {
String ID;
String accNum;
CreditCardNumber tempCred;
System.out.printf("Please enter issuer ID:");
ID = scanner.next();
System.out.printf("Please enter account number:");
accNum = scanner.next();
tempCred = new CreditCardNumber(ID, accNum);
return tempCred;
}
public static void Display(String ch, CreditCardNumber cred2)
{
System.out.println(ch);
System.out.println(cred2.toString().replaceAll(".{4}", "$0 "));
}
public static CreditCardNumber[] getInputArray()
{
CreditCardNumber[] tempArray;
String tempID;
int size;
System.out.printf("Please enter size of the aray:");
size = scanner.nextInt();
if(size < 1)
{
size = 1;
}
tempArray = new CreditCardNumber[size];
System.out.printf("Please enter issuer ID:");
tempID = scanner.next();
for(int i = 0; i < tempArray.length; i++)
{
tempArray[i] = new CreditCardNumber();
tempArray[i].CreateCred(tempID);
}
return tempArray;
}
public static void DisplayArray(CreditCardNumber[] cred1)
{
for(int i = 0; i< cred1.length; i++)
{
Display("Credit Card # " + i+":" + '\n', cred1[i]);
}
System.out.println();
}
public static boolean TryAnother(CreditCardNumber[] cred1)
{
String s;
System.out.printf("Get more credit card numbers? (n for no):");
s = scanner.next();
while(s.charAt(0) != 'N' && s.charAt(0) != 'n')
{
cred1 = getInputArray();
DisplayArray(cred1);
if(s.charAt(0) != 'N' && s.charAt(0) != 'n')
TryAnother(cred1);
}
return false;
}
}
Please enter issuer ID:321321
Please enter account number:654654654
The complete number from your input:
3213 2165 4654 6549
Please enter size of the aray:7
Please enter issuer ID:789789
Credit Card # 0:
7897 8987 8895 1653
Credit Card # 1:
7897 8935 5880 5197
Credit Card # 2:
7897 8997 8152 8134
Credit Card # 3:
7897 8996 1605 8067
Credit Card # 4:
7897 8953 2006 5521
Credit Card # 5:
7897 8964 3319 8191
Credit Card # 6:
7897 8986 1830 7068
Get more credit card numbers? (n for no):y
Please enter size of the aray:3
Please enter issuer ID:345345
Credit Card # 0:
3453 4590 2392 9734
Credit Card # 1:
3453 4549 5025 1905
Credit Card # 2:
3453 4504 2989 0927
Get more credit card numbers? (n for no):n
Please enter size of the aray:
while(!s.startsWith("n") && !s.startsWith("N"))