如何使程序可以获得用户输入的特殊字符的值

Question

所以我想创建一个可以读取特殊字符的程序，并使用caesar chiper将其更改为其他字符。但是，我不明白如何在java中读取特殊字符。请教我。谢谢。

Answer 1

查看Character类。 https://docs.oracle.com/javase/8/docs/api/java/lang/Character.html

char[] charArray = {'1', ' ', '!', 'a', 'C'};

        for (int i = 0; i < charArray.length; i++) {
            char c = charArray[i];
            if(Character.isWhitespace(c)) {
                System.out.println( "'" + c +"'" + " is whitespace");
            } else if (Character.isDigit(c)) {
                System.out.println( "'" + c +"'" + " is a number");
            } else if (Character.isLetter(c)) {
                System.out.println( "'" + c +"'" + " is a letter");
            } else { 
                System.out.println( "'" + c +"'" + " must be a special character");
            }
        }