how to get character in a sentence in java code example

Example 1: get certain character from string java

String words = "Hi There"; //creating a string var named 'words'
char index = words.charAt(0); /* setting a variable 'index' to letter
'0' of variable 'words'. In this case, index = 'H'.*/
System.out.println(index); //print var 'index' which will print "H"

Example 2: java string copy characters

public class Demo {
   public static void main(String []args) {
      char[] arr = { 'p', 'q', 'r', 's' };
      String str = String.copyValueOf(arr, 1, 2);
      System.out.println(str);
   }
}