string to char in java

String string =  "ABCDEF" ;
 
char[] charsFromString = string.toCharArray(); // { 'A', 'B', 'C', 'D', 'E', 'F' }// getting single character from string..
String str="abcd";

char c=str.toChar(0); 

System.out.println("output is "+c); // output is a