CODEWITHSUNDEEP
java
gudenau
gudenau

Reputation: 530

I have a Java exception: java.lang.NumberFormatException

Edit: I was forgot to change the start class to the client package in Eclipse!

This is odd, it works fine in eclipse, then I export it and it gives me a java.lang.NumberFormatException .

The pastebin of Start.java

http://pastebin.com/KxfApWKb

The dump:

Exception in thread "main" java.lang.NumberFormatException: For input string: "gudenau.no-ip.org"

        at java.lang.NumberFormatException.forInputString(Unknown Source)
        at java.lang.Integer.parseInt(Unknown Source)
        at java.lang.Integer.<init>(Unknown Source)
        at com.gudenau.ChatServer.Start.main(Start.java:141)

I don't get why it works in eclipse but not with a batch file.

The code I use for the socket is

socket = new Socket("gudenau.no-ip.org", 45678);

I will change this to not be static later.

    try {
        socket = new Socket("gudenau.no-ip.org", 45678);

        out = new PrintWriter(socket.getOutputStream(), true);
        in = new BufferedReader(new InputStreamReader(
                socket.getInputStream()));
    } catch (NumberFormatException e) {
        e.printStackTrace();
        System.exit(-1);
    } catch (UnknownHostException e) {
        e.printStackTrace();
        System.exit(-2);
    } catch (IOException e) {
        e.printStackTrace();
        System.exit(-3);
    }

Edit the code around 141:

@Override
public void windowIconified(WindowEvent arg0) {
    // TODO Auto-generated method stub

}

@Override
public void windowOpened(WindowEvent arg0) {
    // TODO Auto-generated method stub

}

Upvotes: 1

Views: 1854

Answers (3)

gudenau
gudenau

Reputation: 530

I needed to change the start class in the eclipse jar exporter! Oops!

Upvotes: 0

Paul Cichonski
Paul Cichonski

Reputation: 388

The code you added for line 141 doesn't seem to be correct (I could be wrong). The error is coming from a class called Start (line 141). I am guessing you are trying to create an Integer there, but from a String that does not parse into an Integer.

You may want to add a debug point at that method (or some System.outs) to see what you are actually trying to convert to an Integer.

Update: you are looking at the wrong package, you need com.gudenau.ChatServer, not com.gudenau.ChatCleint.

Upvotes: 1

Attila
Attila

Reputation: 28762

The stack trace you show indicates that the exception is from line 141 of Start.main(), which directly instantiates an Integer object. Since the Socket constructor is taking a primitive int, this cannot be the actual problem. Please update your post with the code surrounding line 141 of Start.main() for a better answer

Upvotes: 0

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