Buffer_Management_in_Java.pptxFile_Handling_in_Java.pptx

File_Handling_in_Java.pptx

1. Buffer Management in Java Understanding Java I/O Buffers and Performance Optimization

2. Introduction to Buffer Management • Buffering helps manage data temporarily in memory. • It reduces the number of I/O operations to improve performance. • Java provides buffering through stream classes like BufferedReader and BufferedWriter.

3. Buffered Streams in Java • BufferedInputStream and BufferedOutputStream handle binary data. • BufferedReader and BufferedWriter handle text data. • They wrap around other streams for efficiency.

4. Example: BufferedReader import java.io.*; public class BufferedReaderExample { public static void main(String[] args) throws IOException { BufferedReader br = new BufferedReader(new FileReader("input.txt")); String line; while ((line = br.readLine()) != null) { System.out.println(line); } br.close(); } }

5. Example: BufferedWriter import java.io.*; public class BufferedWriterExample { public static void main(String[] args) throws IOException { BufferedWriter bw = new BufferedWriter(new FileWriter("output.txt")); bw.write("Hello, Buffered World!"); bw.newLine(); bw.close(); } }

6. Advantages of Buffering • Reduces CPU and disk I/O overhead. • Improves data throughput. • Supports efficient reading and writing of files. • Provides convenient methods like readLine() and newLine().

7. Flushing and Closing Buffers • flush() ensures that all data is written to the file. • close() releases system resources. • Example: BufferedWriter bw = new BufferedWriter(new FileWriter("file.txt")); bw.write("Java I/O"); bw.flush(); bw.close();

8. Summary • Buffering is a key technique for efficient Java I/O. • BufferedReader/Writer handle text; BufferedInput/OutputStream handle binary data. • Always flush and close streams properly.