Friday, 6 November 2015

How to convert character literal into an integer in java?

You can use Character.getNumericValue(char c) method to get the character in integer values.

Sample Program:-

  * @author Dixit  
 public class CharToInteger {  
       * @param args  
      public static void main(String[] args) {  
           String str = "1234aB";  
           for (int i = 0; i < str.length(); i++) {  
                char c = str.charAt(i);  

NOTE:-  Character.getNumericValue(char c) :-Returns the int value that the specified Unicode  character represents. For example, the character  '\u216C' (the roman numeral fifty) will return  an int with a value of 50.  

The letters A-Z in their uppercase ('\u0041' through  '\u005A'), lowercase  ('\u0061' through '\u007A'), and  full width variant ('\uFF21' through  '\uFF3A' and '\uFF41' through  '\uFF5A') forms have numeric values from 10  through 35. This is independent of the Unicode specification,  which does not assign numeric values to these char  values.  

If the character does not have a numeric value, then -1 is returned.  If the character has a numeric value that cannot be represented as a  nonnegative integer (for example, a fractional value), then -2  is returned.

Enjoy Programming.

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