Java problem: Don't know how to compile with the sdk

[acemcmac]

import java.net.*;
import java.io.*;


public class IPFinder
{
public static void main(string[] args) throws IOException
{
String host;
BufferedReader input =
new BufferedReader( new InputStreamReader(System.in));

System.out.println("\nEnter host name: ");
host = input.readLine();
try
{
InetAddress address=
InetAddress.getByName(host);
System.out.pringln("IP Address: " + address);
}
catch (UnknownHostException e)
{
System.out.println("Could not find " + host);
}
}
}

java -classpath TCPServer.java runs with no problem

java TCPServer replies
"Exception in thread "main" java.lang.NoClassDefFoundError: TCPServer


I am sure I'm compiling this wrong... I have the j2sdk-1_3_1_15-windows-i586.exe installed and I'm just copying off of handouts... can someone tell me what I'm doing wrong?

 

[znaps]

1) "java -classpath TCPServer.java" should produce an error.

2) The "java" command runs compiled .class class files
The "javac" command compiles java .java source files.

3) Where is the TCPServer.java / .class file? You showed us the source for another class, IPFinder.

 

[MrScott81]

Make sure your java bin directory is in the classpath and then you will be ok.

 

[acemcmac]

I dunno what I'm doing.... I just need to get the file above, running, hell or high water in a command window by 7:00...... I know nothing about java... could you guys please just tell me what to do ?

 

[Kilrsat]

Originally posted by: acemcmac
I dunno what I'm doing.... I just need to get the file above, running, hell or high water in a command window by 7:00...... I know nothing about java... could you guys please just tell me what to do ?

If you don't know anything about java, why are you responsible for working with java source files?

 

[znaps]

Type "javac IPFinder.java" and see if that creates a IPFinder.class file in the same directory.

 

[acemcmac]

Originally posted by: znaps
Type "javac IPFinder.java" and see if that creates a IPFinder.class file in the same directory.

negative, even with the file named IPFinder.java.

Originally posted by: Kilrsat

Originally posted by: acemcmac
I dunno what I'm doing.... I just need to get the file above, running, hell or high water in a command window by 7:00...... I know nothing about java... could you guys please just tell me what to do ?

If you don't know anything about java, why are you responsible for working with java source files?

good question, ask my prof. He wants this by 7

 

[znaps]

negative, even with the file named IPFinder.java.

Is that all the info you're gonna give? Man, if you want help post all the error messages you see.

 

[znaps]

public static void main(string[] args)

Change the string[] to String[]

 

[acemcmac]

it was the same error in the OP

I'm trying that now

 

[znaps]

Also, WTF does "System.out.pringln" do?

 

[acemcmac]

http://mywebpages.comcast.net/acemcmac/java.GIF

that's what I've got

 

[mundane]

Working from memory - try

javac TCPServer.java, when you're in the same directory as the file. You may need to edit your PATH for access to the javac binary. Or

c:\jdk1.3.1_15\bin\javac path\to\your\file\TCPServer.java

and tell us the error.

 

[znaps]

type "javac IPFinder.java" and see if that creates a IPFinder.class file in the same directory.

type it exactly as I said, not "javah..", not "javac -classpath" and not "java ..."


Then type "dir" and see if there is an "IPFinder.class" file.

If there is, type "java IPFinder"

 

[kamper]

Are you sure the name of the file and the name of the class are the same? As in, for the class IPFinder you should have a file called IPFinder.java.

Also, time to dump the way old jdk. It's two major versions old

 

[acemcmac]

Originally posted by: znaps
type "javac IPFinder.java" and see if that creates a IPFinder.class file in the same directory.

type it exactly as I said, not "javah..", not "javac -classpath" and not "java ..."


Then type "dir" and see if there is an "IPFinder.class" file.

If there is, type "java IPFinder"

HOORAYYYY THE DAY IS SAVED!!!!

 

[znaps]

Now try and get yourself an editor with syntax highlighting..that'll help you learn faster.