Java file read/write operations, java file read/write operations

Java file read/write operations, java file read/write operations

I. Reading files from Java

Case 1: Read the 1.txt file of the D Drive

Encoding:

 1 File file = new File("D:/1.txt"); 2         FileReader fr = new FileReader(file); 3         BufferedReader bf = new BufferedReader(fr); 4         StringBuffer sbuffer = new StringBuffer(); 5         String temp = null; 6         while((temp = bf.readLine()) !=null){ 7             sbuffer.append(temp+"\n"); 8         } 9         System.out.println(sbuffer.toString());10         11         System.out.println();

Result:

Ii. Writing files

Case: The 1.txt file in the ddisk is written into a 2.txt file on the ddisk.

Encoding:

 1 File file = new File("D:/1.txt"); 2         FileReader fr = new FileReader(file); 3         BufferedReader bf = new BufferedReader(fr); 4         StringBuffer sbuffer = new StringBuffer(); 5         String temp = null; 6         while((temp = bf.readLine()) !=null){ 7             sbuffer.append(temp+"\n"); 8         } 9         System.out.println(sbuffer.toString());10         11         System.out.println();12         File outfile = new File("D:/2.txt");13         if(!outfile.exists()){14             try {15                 outfile.createNewFile();16             } catch (IOException e) {17                 // TODO Auto-generated catch block18                 e.printStackTrace();19             }20         }21         byte[] b = (sbuffer.toString()).getBytes();22         FileOutputStream fs = null;23         fs = new FileOutputStream(outfile);24         fs.write(b);25         26         fs.close();27         bf.close();    28