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Message:

readLine()

Posted by Harald Ueland on March 10, 2001 at 11:35 AM

> Hi,
> I really need help with this one. Im a beginner to Java and am trying to write a very simple program that reads input from .txt file ie.. John Smith 606984
> Bob Green 46528
> Steve White 12455

> and outputs them in alphabetical order...as in a phone book
> ie... Green, Bob 46528
> Smith, John 606984
> White, Steve 12455

> Any help would be greatly appreciated.
> Thanks again
> Seamus

You can use the readLine() method to do this. First you have to "connect" to the file with FileReader() and then use BufferedReader():
try {
FileReader fr = new FileReader(String filename);
BufferedReader br = new BufferedReader(fr);
}
catch (IOException e) {i.e write an Error message}
line = br.readLine();
while (line != null) {
line = br.readLine();
System.out.println(line);
}

Before you can do this, you have to import java.io package.
Now, you don't get them in alphabetical order...