Manipulação de Arquivos Java.IO

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/**
 * 
 *
 * @author erick
 */
import java.io.*;
public class PrimeiroCodigo
{
    //
      public static void main(String[] args) throws IOException
      {
          File arquivoOrigem = new File("/home/erick/Downloads/lista_desordenada.txt");
          File arquivoDestino = new File("/home/erick/Downloads/lista_ordenada.txt");
 
          FileReader Entrada = new FileReader(arquivoOrigem);
          FileWriter Saida = new FileWriter(arquivoDestino);
          int c;
 
          while ((c = Entrada.read()) != -1)
             Saida.write(c);
 
          Entrada.close();
          Saida.close();
      }
      
}