Java I/O How to - Write char to a file

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Question

We would like to know how to write char to a file.

Answer

import java.io.FileWriter;
import java.io.IOException;
//from  www  .j a  v a 2s . c  om
class FileWriterDemo {
  public static void main(String args[]) throws IOException {
    String source = "test";
    char buffer[] = new char[source.length()];
    source.getChars(0, source.length(), buffer, 0);

    FileWriter f0 = new FileWriter("file1.txt");
    for (int i = 0; i < buffer.length; i += 2) {
      f0.write(buffer[i]);
    }
    f0.close();

    FileWriter f1 = new FileWriter("file2.txt");
    f1.write(buffer);
    f1.close();

    FileWriter f2 = new FileWriter("file3.txt");

    f2.write(buffer, buffer.length - buffer.length / 4, buffer.length / 4);
    f2.close();
  }
}

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