// getting single character from string..
String str="abcd";
char c=str.toChar(0);
System.out.println("output is "+c); // output is a
String string = "ABCDEF" ;
char[] charsFromString = string.toCharArray(); // { 'A', 'B', 'C', 'D', 'E', 'F' }
char[] chars = { 'A', 'B', 'C', 'D', 'E', 'F' };
String str1 = String.valueOf(chars); //"ABCDEF"
String str2 = new String(chars);// "ABCDEF"
System.out.println(str1.equals(str2)); //"true"
String s = "a";
char c = s.charAt("0");
char caracter = cadena.charAt(0); //Solo primer caracter