How can I convert a char to int in Java

Question

I m new at Java programming   I have for example   char x    9     and I need to get the number in the apostrophes  the digit 9 itself  I tried to do the following   char x   9  int y    int  x     but it didn t work   So what should I do to get the digit in the apostrophes

User · Accepted Answer

The ASCII table is arranged so that the value of the character '9' is nine greater than the value of '0'; the value of the character '8' is eight greater than the value of '0'; and so on.

So you can get the int value of a decimal digit char by subtracting '0'.

char x = '9';
int y = x - '0'; // gives the int value 9

User · Answer

You can use static methods from Character class to get Numeric value from char   char x    9    if  Character isDigit x        Determines if the specified character is a digit      int y   Character getNumericValue x     Returns the int value that the                                              specified Unicode character represents      System out println y

User · Answer

I you have the char  9   it will store its ASCII code  so to get the int value  you have 2 ways  char x    9   int y   Character getNumericValue x       use a existing function System out println y          y   1        9  10   or  char x    9   int y   x -  0                             substract  0  code to get the difference System out println y          y   1        9  10     And it fact  this works also    char x   9  System out println   gt     x     lt            gt    lt  prints a horizontal tab int y    int  x  System out println y          y   1      9 10   You store the 9 code  which corresponds to a horizontal tab  you can see when print as String  bu you can also use it as int as you see above

User · Answer

If you want to get the ASCII value of a character  or just convert it into an int  you need to cast from a char to an int   What s casting  Casting is when we explicitly convert from one primitve data type  or a class  to another  Here s a brief example   public class char to int     public static void main String args               char myChar    a          int  i    int  myChar     cast from a char to an int        System out println   ASCII value -     i         In this example  we have a character   a    and we cast it to an integer  Printing this integer out will give us the ASCII value of  a

[java] How can I convert a char to int in Java?

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