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LetterMachine.java
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38 lines (26 loc) · 887 Bytes
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import java.io.BufferedReader;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.io.PrintWriter;
public class LetterMachine {
public static void main(String[] args) throws IOException {
// Read file - letter.in.txt
File file = new File("letter.in.txt");
BufferedReader br = new BufferedReader(new FileReader(file));
String letterContent = "";
String st;
while ((st = br.readLine()) != null) {
letterContent = letterContent + st;
}
// replace argument
letterContent = letterContent.replace("[[[name]]]", args[0]);
// Write file - letter.out.txt
PrintWriter writer = new PrintWriter("letter.out.txt", "UTF-8");
writer.println(letterContent);
writer.close();
// Print Success! to Monitor.
System.out.println("Success! : "+letterContent);
}
}