Comparing Buffered and Unbuffered Writing Performance : Input Output Stream « File Input Output « Java

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Java » File Input Output » Input Output StreamScreenshots 
Comparing Buffered and Unbuffered Writing Performance

import java.io.BufferedOutputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.util.Date;

public class BufferDiff {
  public static void main(String args[]) throws IOException {
    FileOutputStream unbufStream;
    BufferedOutputStream bufStream;
    unbufStream = new FileOutputStream("test.one");
    bufStream = new BufferedOutputStream(new FileOutputStream("test.two"));
    System.out.println("Write file unbuffered: " + time(unbufStream"ms");
    System.out.println("Write file  buffered: " + time(bufStream"ms");
  }

  static int time(OutputStream osthrows IOException {
    Date then = new Date();
    for (int i = 0; i < 500000; i++) {
      os.write(1);
    }
    os.close();
    return (int) ((new Date()).getTime() - then.getTime());
  }
}
           
       
Related examples in the same category
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2. Input and output with human-readable text filesInput and output with human-readable text files
3. Input and output of primitive values with binary filesInput and output of primitive values with binary files
4. Input and output of arrays and objects with binary filesInput and output of arrays and objects with binary files
5. Input and output of primitive values with random access binary filesInput and output of primitive values with random access binary files
6. Input and output using strings and string buffersInput and output using strings and string buffers
7. Timing Unbuffered Reads
8. Reading Bytes from a DataInputStreamReading Bytes from a DataInputStream
9. Read a file and print, using LineReader and System.out
10. Demonstrate ProgressMeterInputStream
11. Pipe Test
12. Converting text to and from ByteBuffersConverting text to and from ByteBuffers
13. Demonstrates standard I/O redirection
14. Creating a very large file using mappingCreating a very large file using mapping
15. Demonstrates the use of the File class to create directories and manipulate files
16. Mapping an entire file into memory for reading
17. Mapped IOMapped IO
18. What happens when the entire file isn't in your mapping region
19. Object serializationObject serialization
20. Locking portions of a mapped fileLocking portions of a mapped file
21. File read and writeFile read and write
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