我对这个问题感到困惑,无法理解为什么在我输入第一个数据后程序总是退出。如何输入字符串数据?为什么我的程序在我输入密钥后退出
import java.util.Scanner;
public class Caesar {
public static String encode(String enc, int offset) {
offset = offset % 26 + 26;
StringBuilder encoded = new StringBuilder();
for (char i : enc.toCharArray()) {
if (Character.isLetter(i)) {
if (Character.isUpperCase(i)) {
encoded.append((char) ('A' + (i - 'A' + offset) % 26));
} else {
encoded.append((char) ('a' + (i - 'a' + offset) % 26));
}
} else {
encoded.append(i);
}
}
return encoded.toString();
}
public static void main(String[] args) {
Scanner in = new Scanner(System.in);
System.out.print("Enter key: ");
int key = in.nextInt();
System.out.print("Enter line: ");
String str = in.nextLine();
System.out.println(Cipher.encode(str, key));
}
}
@Jens获取输入的readLine - > nextLine –
@ScaryWombat是的,你是对的对不起 – Jens