|
This page contains an archived post to the Java Answers Forum made prior to February 25, 2002.
If you wish to participate in discussions, please visit the new
Artima Forums.
Message:
File IO and string problems
Posted by Yooklid on March 05, 2001 at 11:12 AM
I am writing a small test program to try and find the best way to read in a text file. I have the code below. However, while it compiles, I get a run time error, saying I have a null pointer error at line Hosts[i] = aLine; Any help would be appreciated. I have a feeling this one is staring me right in the face. Thanks! Yooklid
public class TryRead
{
public static void main(String[] args)
{
String DirName = "f:\\CDPNode";
String FileName = "IPTable.dat";
File myFile = new File(DirName, FileName);
BufferedReader theBuffer = null;
FileReader theReader = null;
String aLine = null;
String[] Hosts = null;
int i = 0;
try {
theReader = new FileReader(myFile);
theBuffer = new BufferedReader(theReader);
System.out.println("Streams Created");
}
catch (IOException e)
{
System.out.println(e);
}
try {
aLine = theBuffer.readLine();
}
catch (IOException e) { System.out.println(e);}
System.out.println("Read IP address: " + aLine);
while ( aLine != null)
{
Hosts[i] = aLine;
i++;
try{
aLine = theBuffer.readLine();
}
catch (IOException e) { System.out.println(e);}
}
Replies:
|
