File IO - BufferedWriter/FileWriter

[O. Ziggy]

I wrote the following test:

class FileIO3{
	public static void main(String[] args){
		
		System.out.println("\n============Testing the different constructors================\n");
		
		File fileio3 = new File("fileio3.txt");
		char[] c = new char[50000];
		
		System.out.println("\n FileWriter --> File  \n");
		
		try{
			
			FileWriter fw3 = new FileWriter(fileio3);
			fw3.write("Writing to file using Filewriter");
			fw3.flush();
			fw3.close();
			
			System.out.println("Written txt to file: " + fileio3.getAbsolutePath());
		}catch(IOException e){
			e.printStackTrace();
		}

		System.out.println("\n FileReader --> File  \n");
		
		try{
			
			
			FileReader fr3 = new FileReader(fileio3);
			int size = fr3.read(c);

			System.out.println("Characters read are... ");
			for(char c1 : c)
			{
				System.out.print(c1);
			}	
			
			fr3.close();
			
		}catch(IOException e){
			e.printStackTrace();
		}

		System.out.println("\n BufferedWriter -->  FileWriter --> File  \n");	
		System.out.println("\n BufferedReader -->  FileReader --> File  \n");
		
		try{
			FileWriter fw = new FileWriter(fileio3);
			BufferedWriter bw = new BufferedWriter(fw);

			//Other combinations
			//BufferedWriter bw = new BufferedWriter(new FileWriter(new File("Filename.txt")));
		
			bw.newLine();
			bw.write("Write using BufferedWriter");
			bw.flush();
			bw.close();

			
		
			BufferedReader br = new BufferedReader(new FileReader(fileio3));
			System.out.println("Lines read are... ");
	
			String str;
   		
			while ((str = br.readLine()) != null) {
     		   System.out.println(str);
   			}

			br.close();
				
			}catch(IOException e){
				e.printStackTrace();
			}
			
			System.exit(0);
	}
}

The output of the above program is

============Testing the different constructors================


 FileWriter --> File

Written txt to file: c:\documents and settings\ziggy\My Documents\resources\wspace\jdk.core.sandbox\com\ziggy\scjp\practice\samples\fileio3.txt

 FileReader --> File

Characters read are...
Writing to file using Filewriter





























































































































 BufferedWriter -->  FileWriter --> File


 BufferedReader -->  FileReader --> File

Lines read are...

Write using BufferedWriter

Any idea why there is a big gap on the output? I have a feeling it is to do with fact that i declared char as 50000 but i cant see how that would have caused it as it was used for reading not writing.

Thanks

[Ralph Cook]

Well, at line 32 you have

            for(char c1 : c)  
            {  
                System.out.print(c1);  
            }     

where 'c' is your 50k buffer. Maybe it has something to do with that.