如何让程序能够获取用户输入的特殊字符的值

Question

so i want to make a program that can read special character and change it into other character using caesar chiper. but, i don't understand how actually a special character can be read in java. please teach me. thank you.

Answer 1

Look at the Character class. 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");
            }
        }