Java/File Input Output/BufferedInputStream

Copy byte between BufferedInputStream and BufferedOutputStream

   <source lang="java">

import java.io.BufferedInputStream; import java.io.BufferedOutputStream; import java.io.FileInputStream; import java.io.FileOutputStream; class BufferedCopy {

 public static void main(String[] args) throws Exception {
   BufferedInputStream bis = null;
   BufferedOutputStream bos = null;
   FileInputStream fis = new FileInputStream(args[0]);
   bis = new BufferedInputStream(fis);
   FileOutputStream fos = new FileOutputStream(args[1]);
   bos = new BufferedOutputStream(fos);
   int byte_;
   while ((byte_ = bis.read()) != -1)
     bos.write(byte_);
 }

}

 </source>
   
  
 
  

Create BufferedInputStream from FileInputStream

   <source lang="java">

import java.io.BufferedInputStream; import java.io.FileInputStream; class BufferedInputStreamDemo {

 public static void main(String args[]) throws Exception {
   FileInputStream fis = new FileInputStream(args[0]);
   BufferedInputStream bis = new BufferedInputStream(fis);
   int i;
   while ((i = bis.read()) != -1) {
     System.out.println(i);
   }
   fis.close();
 }

}

 </source>
   
  
 
  

Import a file of exported preference data.

   <source lang="java">

import java.io.BufferedInputStream; import java.io.FileInputStream; import java.io.InputStream; import java.util.prefs.Preferences; public class Main {

 public static void main(String[] argv) throws Exception {
   // Create an input stream on a file
   InputStream is = new BufferedInputStream(new FileInputStream("output.xml"));
   // Import preference data
   Preferences.importPreferences(is);
 }

}

 </source>
   
  
 
  

Read File in String Using Java BufferedInputStream Example

   <source lang="java">

import java.io.BufferedInputStream; import java.io.File; import java.io.FileInputStream; public class Main {

 public static void main(String[] args) throws Exception {
   File file = new File("C:/ReadFile.txt");
   FileInputStream fin = new FileInputStream(file);
   BufferedInputStream bin = new BufferedInputStream(fin);
   byte[] contents = new byte[1024];
   int bytesRead = 0;
   String strFileContents;
   while ((bytesRead = bin.read(contents)) != -1) {
     strFileContents = new String(contents, 0, bytesRead);
     System.out.print(strFileContents);
   }
   bin.close();
 }

}

 </source>
   
  
 
  

Read File Using Java BufferedInputStream Example

   <source lang="java">

import java.io.BufferedInputStream; import java.io.File; import java.io.FileInputStream; public class Main {

 public static void main(String[] args) throws Exception {
   File file = new File("C:/ReadFile.txt");
   FileInputStream fin = new FileInputStream(file);
   BufferedInputStream bin = new BufferedInputStream(fin);
   while (bin.available() > 0) {
     System.out.println((char) bin.read());
   }
   bin.close();
 }

}

 </source>
   
  
 
  

Read from file with BufferedInputStream

   <source lang="java">

import java.io.BufferedInputStream; import java.io.FileInputStream; public class Main {

 public static void main(String[] args) throws Exception {
   byte[] buffer = new byte[1024];
   BufferedInputStream bufferedInput = new BufferedInputStream(new FileInputStream("filename.txt"));
   int bytesRead = 0;
   while ((bytesRead = bufferedInput.read(buffer)) != -1) {
     String chunk = new String(buffer, 0, bytesRead);
     System.out.print(chunk);
   }
   bufferedInput.close();
 }

}

 </source>
   
  
 
  

Use buffered streams to copy a file

   <source lang="java">

import java.io.BufferedInputStream; import java.io.BufferedOutputStream; import java.io.FileInputStream; import java.io.FileOutputStream; public class Main {

 public static void main(String[] argv) throws Exception {
   BufferedInputStream fin = new BufferedInputStream(new FileInputStream("in.dat"));
   BufferedOutputStream fout = new BufferedOutputStream(new FileOutputStream("out.dat"));
   int i;
   do {
     i = fin.read();
     if (i != -1)
       fout.write(i);
   } while (i != -1);
   fin.close();
   fout.close();
 }

}

 </source>