Check out example codes for "get certain character from string java". It will help you in understanding the concepts better.
Code Example 1
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"
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