Check out example codes for "how to get ascii value of string letter in java". It will help you in understanding the concepts better.
Code Example 1
char a = 97+1; char b = 'a'+2; r = (char)(1+5)
Code Example 2
char character = name.charAt(0); // This gives the character 'a' int ascii = (int) character; // ascii is now 97.
Learn ReactJs, React Native from akashmittal.com