how to copy data from one text file to another in java?
['import java. io. BufferedReader;', 'import java. io. FileReader;', 'import java. io. FileWriter;', 'import java. io. IOException;', 'public class FileCopyExample {', 'public static void main(String[] args) {', 'try {', 'FileReader fr = new FileReader("input.txt");']