ArrayList method and casting? 1

[jisoo22]

Hello,

I'm trying to use the BufferedWriter class to write files to a text file via an ArrayList of strings. Unfortunately I run into a compile-time error about not being able to resolve symbols. Is this a casting issue? Here's the snippet of code I have:

			FileWriter wr = new FileWriter(outFileName);
			BufferedWriter outFile = new BufferedWriter (wr);

			for(int i = 0; i < list.size(); i++)
			{
		  outFile.write(list.get(i));
		outFile.newLine();
			}

[code]

I think the &quot;get&quot; method returns an object, but I need a string to make this work.  Does anyone have any suggestions?

Thanks,
Jisoo22

 

[jfryer]

I quick search of the JAva API documentation shows

public Object get(int index)
Returns the element at the specified position in this list.

and

public void write(String str)throws IOException

so your line

outFile.write(list.get(i));

is trying to pass an

object

to a

String

argument.


you will need to cast what .get returns into a string so that .write can write it. -------------------------------------------
There are no onions, only magic
-------------------------------------------

 

[Frush]

Member m = (Member) Array.elementAt(i);

 

[meadandale]

Actually, it should be:

Object obj = list.get(i);
String myString = (String)obj;
outFile.write(myString);

However, since every object has a toString method, this is much simpler:

outFile.write(list.get(i).toString());