java的Scanner類的使用方法

    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);

        //git first input
        System.out.println("plase input your first name:");
        in.nextLine();

        //git second name
        System.out.println("please input your second name :"
 
);
        in.nextLine();

        //git age
        System.out.println("please input your age");
        in.nextInt();
    }

輸出

plase input your first name:
>>jops
please input your second name :
>>steven
please input your age
>>56

使用Console類

    import java.io.Console;

public
 
 class ConsoleDemo {

    public static void main(String[] args) {
        Console console = System.console();
        if ((console!=null)) {

            String userName = console.readLine("User Name:");
            char[] passwd = console.readPassword("Password: ");

            //test
            System.out
 
.println(userName);
            for (char c : passwd) {
                System.out.print(c);
            }
            //replace passwd arrays
            passwd =null;
        }
    }
}

提示：該程式需要在使用 javac在控制檯中編譯，然後在控制檯中用java 執行該類
Conlose類的用途：使用控制檯輸入密碼時，可以使用