java - 尝试使用控制台时出现意外 token 错误

Question

我正在尝试编写以下代码，询问用户他们的用户名和密码:

public static void main(String[] argv) {
        Console console = System.console();
        String USER = console.readLine("Username: ");
        char[] PASSWORD = console.readPassword("Enter password");  
        Arrays.fill(PASSWORD, ' ');
   }

但是，我收到以下错误:

nameless@nameless:~/Desktop/File$ Console console = System.console();
bash: syntax error near unexpected token `('
nameless@nameless:~/Desktop/File$ String USER = console.readLine("Username: ");
bash: syntax error near unexpected token `('
nameless@nameless:~/Desktop/File$ char[] PASSWORD = console.readPassword("Enter password");  
bash: syntax error near unexpected token `('
nameless@nameless:~/Desktop/File$ Arrays.fill(PASSWORD, ' ');

旁注:我正在尝试使用它在 Oracle SQL 中输入数据库。

Answer 1

我想您可以使用 native Scanner 而不是 Console 来实现相同的目标

试试这个可以有任何帮助。

public static void main( String[] args ) {

public static void main( String[] args ) {

    try (Scanner scanner = new Scanner( System.in );) {

        System.out.println( "Username: " );
        String USER = scanner.nextLine();

        System.out.println( "Enter password" );
        String PASSWORD = scanner.nextLine();

        Arrays.fill( PASSWORD.toCharArray(), ' ' );

    } catch ( Exception e ) {

        e.printStackTrace();

    }
}