how to convert string in to char array in java code example

Example 1: java string to char array

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

Example 2: how to covert array into a char

String s="Welcome to Java Programming";
char arr[]=s.toCharArray();
for(int i=0;i<arr.length;i++){
    System.out.println("Data at ["+i+"]="+arr[i]);
}