Read and copy with FileInputStream and FileOutputStream

   

import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.io.OutputStream;

public class FileInputOutputExample {
  public static void main(String[] args) throws Exception {

    InputStream is = new FileInputStream("in.txt");
    OutputStream os = new FileOutputStream("out.txt");
    int c;
    while ((c = is.read()) != -1) {
      System.out.print((char) c);
      os.write(c);
    }
    is.close();
    os.close();

  }
}

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Read and copy with FileInputStream and FileOutputStream : FileInputStream « File Input Output « Java

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