Answers for "convert string to char array in java without using library functions"

java string to char array

String str = "example";
char[] ch = str.toCharArray();

change string to char array

String myString = "Hello, world!";
char[] myCharArray = myString.toCharArray();

String to Char array

String s="abcd";
char[] a=s.toCharArray();

for(char c:a)
{ 	System.out.println(c); }