[英]My program doesn't run the main method, why is that?
出於某種原因,我的主要方法沒有運行。 我不知道為什么。
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.Scanner;
import static java.lang.System.out;
public class Main {
// public static BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
public static Scanner input = new Scanner(System.in);
public static Scanner stringInput = new Scanner(System.in);
public static int UInput = input.nextInt();
public static String[] usrNamePass = new String[3];
public static void main(String[] args) throws IOException {
out.println("Welcome to XYZ Bank! Please Login by typing \n Register by pressing 1");
if(UInput == 1){
registrationMsg();
}
}
static void registrationMsg() throws IOException {
out.println("Welcome to registration, please type your username followed by your password ");
registration();
}
static void registration() throws IOException {
out.println("Enter a username");
usrNamePass[1] = input.next();
out.println("Enter Password");
usrNamePass[2] = input.next();
out.println("Confirm your password");
usrNamePass[3] = input.next();
if (usrNamePass[2] == usrNamePass[3]){
out.println("Are you sure you want your username to be " + usrNamePass[1]);
Login();
}
else {
out.println("Passwords do not match, please try again by pressing 1");
if (UInput == 1){
registration();
}
}
}
}
我不知道為什么它不運行 main 方法。 這是我的IDE自動創建的主文件; 智能
我過去做過類似的程序,它們都按應有的方式工作。 我對為什么我的主要方法甚至沒有運行感到困惑。
public static int UInput = input.nextInt();
是 static 初始化程序,因此它在您的main()
方法中的println
之前調用,因此您的應用程序在將任何內容打印到控制台之前等待用戶輸入。
您可能希望將代碼替換為以下內容:
public static int UInput = 0;
...
public static void main(String[] args) throws IOException {
out.println("Welcome to XYZ Bank! Please Login by typing \n Register by pressing 1");
UInput = input.nextInt();
if (UInput == 1) {
registrationMsg();
}
}
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