RE: Java Delemma
- From: "Stanzel, Susan - Kansas City, MO" <susan.stanzel@xxxxxxxxxxxx>
- To: "programmingblind@xxxxxxxxxxxxx" <programmingblind@xxxxxxxxxxxxx>
- Date: Tue, 29 Jun 2010 07:03:37 -0500
Hi Listers,
Please don't forget about the java list at program-java@xxxxxxxxxxxxxx There
are many great folks on that list.
Susie Stanzel
-----Original Message-----
From: programmingblind-bounce@xxxxxxxxxxxxx
[mailto:programmingblind-bounce@xxxxxxxxxxxxx] On Behalf Of Gilbert Neiva
Sent: Tuesday, June 29, 2010 7:01 AM
To: programmingblind@xxxxxxxxxxxxx
Subject: Re: Java Delemma
Hey Alex. It seems I spoke to soon. It seems that when I checked the
history.d2 file a little more closely, I found that every single line was
indented, not just the beginning of paragraphs. The history.d1 was written
wwith every line written fresh, that is to say, one line was written and
then the author pushed enter and wrote another line and so on. Is there a
way to correct for this so that just the beginning of paragraphs are
indented and not everything else?
Gilbert Neiva
----- Original Message -----
From: "Alex Hall" <mehgcap@xxxxxxxxx>
To: <programmingblind@xxxxxxxxxxxxx>
Sent: Monday, June 28, 2010 9:42 PM
Subject: Re: Java Delemma
> Glad it worked, or mostly worked. I am not sure why you would get two
> lines right before the final paragraph...
>
> On 6/28/10, Gilbert Neiva <gneiva@xxxxxxx> wrote:
>> Hi Alex. I just found out that the output file doesn't need two lines
>> above
>> the last paragraph. As a result I made the following if and else if
>> statements.
>>
>> if (inputString.length() < 1)
>> {
>> outFile.print("\n");
>> }
>> else if (inputString.length() > 0)
>> {
>> inputString = blanks+inputString;
>> }
>>
>> When I checked the outfile.d2 file, the last paragraph still had two
>> lines
>> above it, but at least the last paragraph was properly indented. Here is
>> my
>> new class.
>>
>> import java.io.*; // importing input.output classes
>> import java.util.Scanner;
>>
>> public class History
>> {
>> static Scanner inFile; // Object that will read from file
>> static PrintWriter outFile; // object that will print to file
>>
>> static void printHistory() throws IOException
>> // Start of void method
>> {
>> String inputString; // String for line of text in file
>> final String blanks = " ";
>> // Five blanks inserted at beginning of paragraphs
>> inFile = new Scanner(new FileReader("history.d1"));
>> // Instantiating new scanner and new filereader object with
>> // history.d1 as argument
>> outFile = new PrintWriter(new FileWriter("history.d2"));
>> // Instantiating new printWriter object
>> // It will be used to write to a file
>> inputString = blanks+inFile.nextLine();
>> outFile.println(inputString);
>> // Printing 5 spaces plus line
>> // to file
>>
>> while (inFile.hasNextLine())
>> {
>> inputString = inFile.nextLine();
>>
>> if (inputString.length() < 1)
>> {
>> outFile.print("\n");
>> }
>> else if (inputString.length() > 0)
>> {
>> inputString = blanks+inputString;
>> }
>> outFile.println(inputString);
>> // Printing line of text to file
>> }
>> inFile.close();
>> outFile.close();
>> // Closing files
>> }
>>
>> public static void main(String[] args) throws IOException
>> {
>> printHistory();
>> // Calling method printHistory()
>> }
>> } // End of class
>>
>> Gilbert Neiva
>>
>> ----- Original Message -----
>> From: "Alex Hall" <mehgcap@xxxxxxxxx>
>> To: <programmingblind@xxxxxxxxxxxxx>
>> Sent: Monday, June 28, 2010 8:30 PM
>> Subject: Re: Java Delemma
>>
>>
>> And the problem is that the final paragraph does not get the indent...
>> What if you changed the if statement to something like this:
>> if (inputString.length() < 1)
>> {
>> outFile.println("\n");
>> inputString = blanks+inputString;
>> }
>>
>> I say this because, and I could be wrong here, each call to a file
>> object's nextLine() method moves you down a line in the file, as
>> though you had pressed the down arrow (assuming the arrows moved you
>> by full lines, not just as many words as are on one line of a
>> monitor). When you assign inputString to inFile.nextLine(), you press
>> this hypothetical down arrow. Then, when you assign inputString to
>> blanks+inFile.nextLine(), you are pressing the arrow again, so the
>> line may not be correct. I am not sure if that will do it, but it is
>> the only thing I see. Someone on the list will likely be able to
>> direct you better.
>>
>>
>> On 6/28/10, Gilbert Neiva <gneiva@xxxxxxx> wrote:
>>> Here is the entire class.
>>>
>>> import java.io.*; // importing input.output classes
>>> import java.util.Scanner;
>>>
>>> public class History
>>> {
>>> static Scanner inFile; // Object that will read from file
>>> static PrintWriter outFile; // object that will print to file
>>>
>>> static void printHistory() throws IOException
>>> // Start of void method
>>> {
>>> String inputString; // String for line of text in file
>>> final String blanks = " ";
>>> // Five blanks inserted at beginning of paragraphs
>>> inFile = new Scanner(new FileReader("history.d1"));
>>> // Instantiating new scanner and new filereader object with
>>> // history.d1 as argument
>>> outFile = new PrintWriter(new FileWriter("history.d2"));
>>> // Instantiating new printWriter object
>>> // It will be used to write to a file
>>> inputString = blanks+inFile.nextLine();
>>> outFile.println(inputString);
>>> // Printing 5 spaces plus line
>>> // to file
>>>
>>> while (inFile.hasNextLine())
>>> {
>>> inputString = inFile.nextLine();
>>>
>>> if (inputString.length() < 1)
>>> {
>>> outFile.println("\n");
>>> inputString = blanks+inFile.nextLine();
>>> }
>>> outFile.println(inputString);
>>> // Printing line of text to file
>>> }
>>> inFile.close();
>>> outFile.close();
>>> // Closing files
>>> }
>>>
>>> public static void main(String[] args) throws IOException
>>> {
>>> printHistory();
>>> // Calling method printHistory()
>>> }
>>> } // End of class
>>>
>>> Gilbert Neiva
>>>
>>> ----- Original Message -----
>>> From: "Alex Hall" <mehgcap@xxxxxxxxx>
>>> To: <programmingblind@xxxxxxxxxxxxx>
>>> Sent: Monday, June 28, 2010 6:58 PM
>>> Subject: Re: Java Delemma
>>>
>>>
>>>>I don't follow. Could you post the entire loop so we can see what is
>>>> going on? Also, comments are welcomed! Remember that in Java, two
>>>> slashes mean that the rest of the line is a comment, so you could put
>>>> this in your file:
>>>> if(1a==0){ //check that a is really 0
>>>> System.out.print("var a is 0!"); //tell user
>>>> }//end if
>>>>
>>>> On 6/28/10, Gilbert Neiva <gneiva@xxxxxxx> wrote:
>>>>> I succeeded in making my application that inputs a file, prints 5
>>>>> spaces
>>>>> at
>>>>> the beginning of a paragraph and prints to a file with the new
>>>>> changes.
>>>>> Now
>>>>> I have another problem. The last paragraph of the input file has two
>>>>> blank
>>>>> lines above it. When my application runs and creates the output file,
>>>>> the
>>>>> last paragraph of the output file has two lines above it, but the
>>>>> paragraph
>>>>> is not indented. The blank line just above the paragraph has 5 space
>>>>> characters in it. The rest of the output file is fine. The paragraphs
>>>>> in
>>>>> the
>>>>> output file that have no indent issues have one blank line above them
>>>>> which
>>>>> is what I want. I made an if statement inside a while statement to
>>>>> detect
>>>>> the blank lines and print an extra blank line to the output file as
>>>>> well
>>>>> as
>>>>> store the new paragraph indented 5 spaces in a string varriable. The
>>>>> if
>>>>> statement is as follows.
>>>>>
>>>>> if inputString.length() < 1
>>>>> {
>>>>> outFile.println("\n");
>>>>> inputString = inFile.nextLine();
>>>>> }
>>>>>
>>>>> What do I do to correct my last paragraph so it is indented properly,
>>>>> but
>>>>>
>>>>> I
>>>>> still have two blank lines above it?
>>>>>
>>>>> Gilbert Neiva
>>>>>
>>>>> ----- Original Message -----
>>>>> From: "Alex Hall" <mehgcap@xxxxxxxxx>
>>>>> To: <programmingblind@xxxxxxxxxxxxx>
>>>>> Sent: Monday, June 28, 2010 1:36 PM
>>>>> Subject: Re: Java Delemma
>>>>>
>>>>>
>>>>>> You want to use getNext(), not hasNext(). HasNext is a test to see if
>>>>>> any lines remain; you might say something like
>>>>>> while(file.hasNextLine()){
>>>>>> txt+=file.getNextLine();
>>>>>> }
>>>>>> Please note that it has been some time since I did Java, so the
>>>>>> method
>>>>>> may not be called getNext, but it is something similar which you can
>>>>>> find in the docs.
>>>>>> The error is because hasNext returns true or false (a boolean) where
>>>>>> getNext returns an actual string, which is what you want.
>>>>>>
>>>>>>
>>>>>> On 6/28/10, Gilbert Neiva <gneiva@xxxxxxx> wrote:
>>>>>>> I'm trying to write an application which takes an input file, and
>>>>>>> adds
>>>>>>> 5
>>>>>>> blank spaces at the beginning of each paragraph. Then the
>>>>>>> application
>>>>>>> is
>>>>>>> to
>>>>>>> write to an output file with the new changes. The application will
>>>>>>> detect
>>>>>>> the beginning of a new paragraph because there is a blank line
>>>>>>> before
>>>>>>> it.
>>>>>>>
>>>>>>> I
>>>>>>> test for the blank using the following if statement.
>>>>>>>
>>>>>>> if inputString.length() < 1
>>>>>>> {
>>>>>>> inputString = blanks+inFile.hasNextLine();
>>>>>>> }
>>>>>>>
>>>>>>> When I tried to compile the application using the javac program, I
>>>>>>> get
>>>>>>> the
>>>>>>> following error.
>>>>>>>
>>>>>>> History.java:23: incompatible types
>>>>>>> found : boolean
>>>>>>> required: java.lang.String
>>>>>>> inputString = inFile.hasNextLine();
>>>>>>> ^
>>>>>>> 1 error
>>>>>>>
>>>>>>> The source code for the application is below.
>>>>>>>
>>>>>>> import java.io.*; // importing input.output classes
>>>>>>>
>>>>>>> import java.util.Scanner;
>>>>>>>
>>>>>>>
>>>>>>> public class History
>>>>>>>
>>>>>>> {
>>>>>>>
>>>>>>> public static Scanner inFile;
>>>>>>>
>>>>>>> public static PrintWriter outFile;
>>>>>>>
>>>>>>>
>>>>>>> public static void main(String[] args)
>>>>>>>
>>>>>>> {
>>>>>>>
>>>>>>> String inputString; // Input string from a line in file
>>>>>>>
>>>>>>> final String blanks = " ";
>>>>>>>
>>>>>>> // Five blanks inserted at beginning of each paragraph
>>>>>>>
>>>>>>> inFile = new Scanner(new FileReader("history.d1"));
>>>>>>>
>>>>>>> // Instantiating new scanner and new filereader object with
>>>>>>>
>>>>>>> // history.d1 as argument
>>>>>>>
>>>>>>> outFile = new PrintWriter(new FileWriter("history.d2"));
>>>>>>>
>>>>>>> // Instantiating new printWriter object
>>>>>>>
>>>>>>> // It will be used to write to a file
>>>>>>>
>>>>>>> inputString = blanks+inFile.hasNextLine();
>>>>>>>
>>>>>>> outFile.println(inputString);
>>>>>>>
>>>>>>>
>>>>>>> while (inFile.hasNextLine())
>>>>>>>
>>>>>>> {
>>>>>>>
>>>>>>> inputString = inFile.hasNextLine();
>>>>>>>
>>>>>>>
>>>>>>> if (inputString.length() < 1)
>>>>>>>
>>>>>>> {
>>>>>>>
>>>>>>> inputString = blanks+inFile.hasNextLine();
>>>>>>>
>>>>>>> }
>>>>>>>
>>>>>>> outFile.println(inputString);
>>>>>>>
>>>>>>> }
>>>>>>>
>>>>>>> inFile.close();
>>>>>>>
>>>>>>> outFile.close();
>>>>>>>
>>>>>>> }
>>>>>>>
>>>>>>> }
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> What am I doing wrong?
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> Gilbert Neiva
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>
>>>>>>
>>>>>> --
>>>>>> Have a great day,
>>>>>> Alex (msg sent from GMail website)
>>>>>> mehgcap@xxxxxxxxx; http://www.facebook.com/mehgcap
>>>>>> __________
>>>>>> View the list's information and change your settings at
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>>>>>>
>>>>>
>>>>> __________
>>>>> View the list's information and change your settings at
>>>>> //www.freelists.org/list/programmingblind
>>>>>
>>>>>
>>>>
>>>>
>>>> --
>>>> Have a great day,
>>>> Alex (msg sent from GMail website)
>>>> mehgcap@xxxxxxxxx; http://www.facebook.com/mehgcap
>>>> __________
>>>> View the list's information and change your settings at
>>>> //www.freelists.org/list/programmingblind
>>>>
>>>>
>>>
>>> __________
>>> View the list's information and change your settings at
>>> //www.freelists.org/list/programmingblind
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>>>
>>
>>
>> --
>> Have a great day,
>> Alex (msg sent from GMail website)
>> mehgcap@xxxxxxxxx; http://www.facebook.com/mehgcap
>> __________
>> View the list's information and change your settings at
>> //www.freelists.org/list/programmingblind
>>
>> __________
>> View the list's information and change your settings at
>> //www.freelists.org/list/programmingblind
>>
>>
>
>
> --
> Have a great day,
> Alex (msg sent from GMail website)
> mehgcap@xxxxxxxxx; http://www.facebook.com/mehgcap
> __________
> View the list's information and change your settings at
> //www.freelists.org/list/programmingblind
>
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