Java File read write operation in Java

 package example1;  
 import java.io.BufferedOutputStream;  
 import java.io.BufferedReader;  
 import java.io.BufferedWriter;  
 import java.io.File;  
 import java.io.FileInputStream;  
 import java.io.FileNotFoundException;  
 import java.io.FileOutputStream;  
 import java.io.FileReader;  
 import java.io.FileWriter;  
 import java.io.IOException;  
 import java.io.OutputStream;  
 import java.io.OutputStreamWriter;  
 import java.io.Reader;  
 public class ReadWriteFile {  
      public static void main(String[] args) {  
           ReadFile r = new ReadFile();  
           r.read("c:/Test/toi.txt");  
           r.read1("c:/Test/toi.txt");  
      }  
 }  
 // read file using file input stream  
 class ReadFile1 {  
      String path;  
      public void read(String path) {  
           this.path = path;  
           File f = new File(path);  
           try {  
                FileInputStream input = new FileInputStream(f);  
                int content;  
                while ((content = input.read()) != -1) {  
                     System.out.print((char) content); // type casting int to  
                                                                  // character  
                }  
                input.close();  
           } catch (IOException e) {  
                // TODO Auto-generated catch block  
                e.printStackTrace();  
           }  
      }  
 }  
 // read file using Buffered input stream  
 class ReadFile {  
      String contents;  
      public String read(String path) {  
           File f = new File(path);  
           try {  
                BufferedReader reader = new BufferedReader(new FileReader(f));  
                BufferedWriter writer = null;  
                writer = new BufferedWriter(new FileWriter("c:/Test/sudas.txt"));  
                while ((contents = reader.readLine()) != null) {  
                     writer.write(contents);  
                     writer.write('\n');  
                     // System.out.println(contents);  
                }  
                reader.close();  
                writer.close();  
           } catch (IOException e) {  
                // TODO Auto-generated catch block  
                e.printStackTrace();  
           }  
           return contents;  
      }  
      public String read1(String path) {  
           File f = new File(path);  
           try {  
                BufferedReader reader = new BufferedReader(new FileReader(f));  
                BufferedOutputStream out = new BufferedOutputStream(  
                          new FileOutputStream("c:/Test/Output.txt"));  
                while ((contents = reader.readLine()) != null) {  
                     out.write(contents.getBytes());  
                     out.write("\n".getBytes());  
                     System.out.println(contents);  
                }  
                reader.close();  
                out.close();  
           } catch (IOException e) {  
                // TODO Auto-generated catch block  
                e.printStackTrace();  
           }  
           return contents;  
      }  
 }  
 class CreateFiles {  
      public void create(String path) {  
           File f = new File(path);  
           try {  
                f.createNewFile();  
           } catch (IOException e) {  
                // TODO Auto-generated catch block  
                e.printStackTrace();  
           }  
      }  
 }