Example 1: Convert char to int
class CharToInt { public static void main(String[] args) { // create char variables char a = '5'; char b = 'c'; // ASCII value of characters are assigned int num1 = a; int num2 = b; System.out.println(num1); System.out.println(num2); } }
Output
53 99
In the above example, we are assigning char type variable to int. Internally, java converts the char variable to its corresponding ASCII values. Here ASCII value of char 5 is 53 and char c is 99.
Example 2: Convert char to int using getNumericValue() method
There is another method in Character class getNumericValur() which takes the numberic value of character and stores it in num1 and
class CharToInt { public static void main(String[] args) { // create char variables char a = '5'; char b = '9'; // Use getNumericValue() int number1 = Character.getNumericValue(a); int number2 = Character.getNumericValue(b); // print the numeric value of characters System.out.println(number1); System.out.println(number2); } }
Output
5 9
Example 3: Converting char to int using parseInt() method
Here
class CharToInt { public static void main(String[] args) { // create char variables char a = '5'; char b = '9'; // Use parseInt() int number1 = Integer.parseInt(String.valueOf(a)); int number2 = Integer.parseInt(String.valueOf(b)); // print numeric value of character System.out.println(number1); System.out.println(number2); } }
Output
5
9
Here, String.valueOf(a) convers the character variable into String and Integer.parseInt() converts the String variable into int.
Example 4: Finally, char to int by subtracting with ‘0’
class CharToInt{ public static void main(String[] args) { // create char variables char a = '9'; char b = '3'; // convert char variables to int by subtracting with char 0 int num1 = a - '0'; int num2 = b - '0'; // print numeric value of character System.out.println(num1); System.out.println(num2); } }
Output
9 3
