How to store a word in Java program?

Java: There are 5 ways to Save/Write String Into a File:

1. Files.writeString(): The writeString() method of File Class in Java is used to write contents to the particular file.
2. Files.write()
3. FileWriter.
4. BufferedWriter: BufferedWriter class is used to provide buffering for Writer instances. It makes the performance easy.
5. PrintWriter: Prints formatted representations of objects to a text-output stream. 

Example: 

String s="abcd"; 
char[] a=s.toCharArray(); 
for(char c:a){ 
	System.out.println(c); 
}