char轉int，int轉char

char轉int

1）

char ch = '9';
if (Character.isDigit(ch)){  // 判斷是否是數字
    int num = Integer.parseInt(String.valueOf(ch));
    System.out.println(num);
}  

2）

char ch = '9';
if (Character.isDigit(ch)){  // 判斷是否是數字
    int num = (int)ch - (int)('0');
    System.out.println(num);
}

int轉char

int number = 9;
char cNumber= (char) (number+'0');
System.out.println("Number "+number+" to char is:"+cNumber);