Java OutOfMemoryError

Wondering if anyone can help me out here, not sure if my code is causing this or just not having a particularly hi-spec machine.

I'm trying to iterate over a month's worth of files in a directory, there's likely 4300+ files for any given month and each file could have between 1-5000 records. The idea is to split each record of each file into a string array and add to a list of string arrays for further processing elsewhere.

This is the error I get...

Exception in thread "main" java.lang.OutOfMemoryError: GC overhead limit exceeded
at java.lang.String.split(Unknown Source)
at java.lang.String.split(Unknown Source)
at processedCdr.ProcessedCdrFiles.processedFileCdr(ProcessedCdrFiles.java:42)
at processedCdr.ProcessedCdrFiles.processedFiles(ProcessedCdrFiles.java:27)
at processedCdr.ProcessedTest.main(ProcessedTest.java:15)

My PC has 4GB DDR3L 1600.

My code is as follows...

[PHP]
// Get files from directory and pass them to FileCdr method
public List<String[]> processedFiles(String date) throws FileNotFoundException {

File dir = new File(processedDir);
File[] directoryListing = dir.listFiles();

if (directoryListing != null) {
for (File child : directoryListing) {
if(child.getName().contains(date)){
processedFileCdr(child);
fileCount++;
}
}
}
return cdrArray;
}

// iterate over file and add records to cdrArray list
public void processedFileCdr(File CDR) throws FileNotFoundException{

Scanner file = new Scanner(new FileReader(CDR));

while (file.hasNextLine()) {
String[] line = file.nextLine().split(",");
if(line.length > 2){
cdrArray.add(line);
}
}
file.close();
}

[/PHP]