Porting executable JARs to other computers

Hi, all!
There seem to be about 10 threads on this topic already, but none of them had any information that fixed what's wrong with my manifest.
I'd like to be able to put a downloadable executable jar file on my site so a professor can just download and double-click to run my program (he may or may not have linux, windows, or mac, but he'll definitely have the JRE). I'm getting the "Could not find the main class: program will exit now" error when double-clicking on a jar I created in Eclipse. The program has one main class called Model, and three other classes. The package name is Model, and the project name is ExerciseOneBeta. Here's the contents of my default created manifest file:
Manifest-Version: 1.0
Main-Class: Model.Model
From reading the other forum threads, I made sure that there was a new line after the second line of text. I've already read the jar tutorial at sun; it only included information on how to run a jar from command line, and only after already configuring your JRE path to be accessible to any jar on your machine. I need my jar to be double-clickable and totally self-contained. How should I try to modify my manifest?

I have twice had similar problems to this and they
were caused by the following.
1) Stupid flash and it's stupid installer that
fiddled with my classpath.
2) Something when I installed 1.5 runtime whichwent
away after I upgraded to a more recent version.The app runs fine in Eclipse. If the jar file needs
to know anything about my classpath or enviro
variables, the jar file hasn't been constructed
properly. I need a jar file which is FULLY
self-contained, and executes on a double-click.Yes, yes lovely.
What I am saying is that both of those were bugs in other things that manifested (ha ha) themselves when I tried to run self executing jars.
For starters I would check to see that something hasn't tried to add/modify otherwise screw you up by adding a system environment variable or the like called classpath to your system.

Similar Messages

In the middle of restoring my iphone 3Gs in itunes, some kind of error occurred and now my iPhone is stuck on just the factory setting of "connect to itunes" screen. Now my computer will not recognize the usb port. I tried other computers. What can i do?

I really need help, i had just finished activating my iphone, and now im loosing money because i cannot use it.

What was the error number? That would be very useful since the following gives actions for various errors.
http://support.apple.com/kb/TS3694
Try manually placing the iPod in recovery mode to see if that will make the iPod visible in iTunes. See:
http://support.apple.com/kb/HT1808

Executable JAR containing images doesn't load them

I'm using Netbeans 4.0 for developping a Java Application. This application is composed of 3 packages:
- daemonexplorerv10: which contains the main class.
- GUI: which contains classes I use to create the GUI of the application.
- images: which contains GIF and PNG images used by the application. It also contains a class named ImageLoader which is used to load the images contained in the package. I will detail this class later.
My main class, named Main.java, simply lauches the main JFrame of the application GUI. Here is the code of it's main method:
public static void main(String[] args) {
        //Schedule a job for the event-dispatching thread:
        //creating and showing this application's GUI.
        javax.swing.SwingUtilities.invokeLater(new Runnable() {
            public void run() {
                MainFrame.createAndShowGUI();
    }In the GUI package, I created a class named MainFrame which extends JFrame and is the main frame of my application GUI. Here is the code of it's method createAndShowGUI:
    public static void createAndShowGUI() {
        //Suggest that the L&F (rather than the system)
        //decorate all windows. This must be invoked before
        //creating the JFrame. Native look and feels will
        //ignore this hint.
        JFrame.setDefaultLookAndFeelDecorated(true);
        //Create and set up the window.
        MainFrame main_frame = new MainFrame(main_frame_title);
        main_frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        //Display the window.
        main_frame.pack();
        main_frame.setVisible(true);
    }And here is the beginning of the code of it's constructor:
    public MainFrame(String title) {
        super(title);
        ImageLoader il = ImageLoader.getSingleton();
        ImageIcon application_icon = il.loadImage("application_icon.png");
        if (application_icon != null) {
            this.setIconImage(application_icon.getImage());
        else {
            System.out.println("Error - application_icon could not be loaded");
...As you see, MainFrame uses ImageLoader so as to customize the frame icon. ImageLoader follows the singleton pattern. It has a method called loadImage which returns an IconImage for a given image name. Here is the code of this method:
    public ImageIcon loadImage(String image_name) {
        ClassLoader cldr = this.getClass().getClassLoader();
        URL image_url = cldr.getResource("\\images\\"+image_name);
        if (image_url != null) {
            return new ImageIcon(image_url);
        else {
            return null;
    }For every image I want to use in my application, I use ImageLoader. It fetches the image thanks to the given name, provided that the image is placed in the package called images, or else the method loadImage returns null.
So the MainFrame uses ImageLoader which fetches the image "application_icon.png" for the frame to set it as it's custom icon.
My application runs perfectly well :)... as far as I run it through Netbeans launcher. But Netbeans also creates automatically an executable JAR file for each builded application. So I tried to lauch this JAR. Through this way, the application works, but all the images that should be loaded aren't!
I unpacked the JAR so as to check if all the images are in it. Netbeans includes the images. Netbeans also creates a manifest file which seems perfectly correct.
So I can't understand why my application runs without any images when I launch it through an executable JAR while it works fine (with all the images) when I lauch it through Netbeans.
I checked many forums to find a solution. Using ImageIO doesn't or ToolKit doesn't solve the problem. It simply seems that the path of the package called images can't be found by the method getResource when this package is compressed in the JAR.
P.S: I use J2SE Development Kit 5.0 and J2SE Runtime Environment 5.0.

So ReinerP, I tried your code today in a little test application which has a single package containing two classes:
- Main.java
- JMainFrame.java
Here is the code of Main.java:
public class Main {
    /** Creates a new instance of Main */
    public Main() {
     * @param args the command line arguments
    public static void main(String[] args) {
        javax.swing.SwingUtilities.invokeLater(new Runnable() {
            public void run() {
                //Suggest that the L&F (rather than the system)
                //decorate all windows. This must be invoked before
                //creating the JFrame. Native look and feels will
                //ignore this hint.
                JFrame.setDefaultLookAndFeelDecorated(true);
                //Create and set up the window.
                JMainFrame main_frame = new JMainFrame();
                main_frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
                //Display the window.
                main_frame.pack();
                main_frame.setVisible(true);
}And here is the code of JMainFrame.java:
public class JMainFrame extends JFrame {
    /** Creates a new instance of JMainFrame */
    public JMainFrame() {
        super();
        //load and set icon
        URL imgURL = JMainFrame.class.getResource("icon.png");
        ImageIcon img = new ImageIcon(imgURL);
        setIconImage(img.getImage());
}As you said, it works :). It works when I run it through Netbeans launcher, and it also works when I run it through the Executable JAR Netbeans generated during the building of the application.
So I adapted the code of the application I was talking about in the first post of this topic. I modified the code of the method loadImage in ImageLoader.java:
public ImageIcon loadImage(String image_name) {
//not working in JAR: ClassLoader cldr = this.getClass().getClassLoader();
//not working in JAR: URL image_url = cldr.getResource("\\images\\"+image_name);
        URL image_url = ImageLoader.class.getResource(image_name);
        if (image_url != null) {
            return new ImageIcon(image_url);
        else {
            return null;
    }And it works well. Thanks again. However, I still can't explain why the use of class loader isn't undertood by the executable JAR.

HT3546 How do I set up my air port extreme to do port forwarding? Running 10.7.4 I have a IP camera on my local wireless net work that I want to use from my iPhone 4s and other computers.

How do I set up my air port extreme to do port forwarding? Running 10.7.4 I have a IP camera on my local wireless net work that I want to use from my iPhone 4s and other computers.

In most cable systems, the router you have will plug into your modem and just work automatically. A NAT (Network Address Translation) router takes your external IP and hands out LAN (Local Area Network) based IPs. All of the devices you are working with right now should handle the change automatically unless you've changed from the default automatic configuration.
The problem with your wireless end of this is that the iPhone is not yet 802.11n, only 802.11g. Because that router is not dual band, all of your wifi devices will be forced to slow down to 802.11g speeds. This won't matter much for each device that's connecting to the internet, as your bottleneck is still going to be there. Where you will see slowdowns is device to device connections, like transferring data between the devices.

LAN-"shared to other computers"...not connecting {SOLVED}

Hi,
I just downloaded the latest Arch 64-bit the other day and thanks to the excellent wikis I have been able to get KDe up and running and change to network manager for my mobile broadband internet.
The only main thing I have a problem with now is connecting to my (VU+ duo) satellite box over LAN with a cat 5 in order to stream my TV service. This has nothing to do with the internet.
The only thing I had to do in other distors in network manager was set up a new wired connection and , in IPV4, change to "shared to other computers" and it would connect straight away. The satellite box has a static IP address saved into it
when I try now, I get a message "The shared service failed to start"
ip link:
2: enp3s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP mode DEFAULT group default qlen 1000
There is no file /var/log/messages to check.
These are the last few lines in dmesg after I tried to connect
[ 8.127846] r8169 0000:03:00.0 enp3s0: link down
[ 8.127861] r8169 0000:03:00.0 enp3s0: link down
[ 8.127872] IPv6: ADDRCONF(NETDEV_UP): enp3s0: link is not ready
[ 9.734164] r8169 0000:03:00.0 enp3s0: link up
[ 9.734176] IPv6: ADDRCONF(NETDEV_CHANGE): enp3s0: link becomes ready
[ 1385.154487] ip_tables: (C) 2000-2006 Netfilter Core Team
[ 1385.167013] nf_conntrack version 0.5.0 (16384 buckets, 65536 max)
from lspci:
03:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8101E/RTL8102E PCI Express Fast Ethernet controller (rev 02)
any ideas?
EDIT: from lspci -v
03:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8101E/RTL8102E PCI Express Fast Ethernet controller (rev 02)
Subsystem: Dell Device 02e0
Flags: bus master, fast devsel, latency 0, IRQ 45
I/O ports at ce00 [size=256]
Memory at fddff000 (64-bit, prefetchable) [size=4K]
Memory at fdde0000 (64-bit, prefetchable) [size=64K]
[virtual] Expansion ROM at fdd00000 [disabled] [size=128K]
Capabilities: <access denied>
Kernel driver in use: r8169
Kernel modules: r8169
[nemesis@archlinux ~]$ dmesg | grep r8169
[ 5.251914] r8169 Gigabit Ethernet driver 2.3LK-NAPI loaded
[ 5.251930] r8169 0000:03:00.0: can't disable ASPM; OS doesn't have ASPM control
[ 5.252154] r8169 0000:03:00.0: irq 45 for MSI/MSI-X
[ 5.252330] r8169 0000:03:00.0 eth0: RTL8102e at 0xffffc900122de000, 00:25:64:e9:56:55, XID 04a00000 IRQ 45
[ 8.127846] r8169 0000:03:00.0 enp3s0: link down
[ 8.127861] r8169 0000:03:00.0 enp3s0: link down
[ 9.734164] r8169 0000:03:00.0 enp3s0: link up
Last edited by Human_19 (2014-01-08 20:37:48)

the address in the tv box is static 10.42.0.65, gateway 10.42.0.1. I never have to enter this info into nm, only in the browser after connection is established
I fired up a live cd of manjaro earlier and was able to connect to the shared link straight away, as usual.
3 lines from that log:
Jan 4 13:45:07 localhost NetworkManager[303]: <info> Starting dnsmasq...
Jan 4 13:45:07 localhost NetworkManager[303]: <info> (eth0): device state change: ip-config -> activated (reason 'none') [70 100 0]
Jan 4 13:45:07 localhost NetworkManager[303]: <info> Activation (eth0) successful, device activated.
The result from Arch today:
s]# journalctl _SYSTEMD_UNIT=NetworkManager.service + _SYSTEMD_UNIT=dnsmasq.service --since 2014-01-04 ^C
is below, at the bottom of the post. I didnt include modem manager as Iam not looking for an internet connection
I am guessing the most important lines are:
Jan 04 18:25:43 archlinux NetworkManager[224]: <info> Activation (enp3s0) successful, device activated.
Jan 04 18:25:43 archlinux NetworkManager[224]: <warn> dnsmasq exited with error: Network access problem (address in use; permissions; etc) (2)
after googling, I found dnsmasq exitcodes
2 - A problem with network access occurred (address in use, attempt to use privileged ports without permission).
Could it be that I just need to add my user to a particular group to access http over the LAN? I cant find out how to determine which groupd I am in already. I added a load of groups already .
on Arch from my latest attempt:
-- Reboot --
Jan 04 18:23:58 archlinux NetworkManager[224]: <info> NetworkManager (version 0.9.8.8) is starting...
Jan 04 18:23:58 archlinux NetworkManager[224]: <info> Read config file /etc/NetworkManager/NetworkManager.conf
Jan 04 18:23:58 archlinux NetworkManager[224]: <info> WEXT support is enabled
Jan 04 18:23:58 archlinux NetworkManager[224]: <info> Loaded plugin keyfile: (c) 2007 - 2010 Red Hat, Inc. To report bugs please use the NetworkMa
Jan 04 18:23:58 archlinux NetworkManager[224]: keyfile: parsing vu+ ...
Jan 04 18:23:58 archlinux NetworkManager[224]: keyfile: read connection 'vu+'
Jan 04 18:23:58 archlinux NetworkManager[224]: keyfile: parsing O2 ...
Jan 04 18:23:58 archlinux NetworkManager[224]: keyfile: read connection 'O2'
Jan 04 18:23:58 archlinux NetworkManager[224]: <info> monitoring kernel firmware directory '/lib/firmware'.
Jan 04 18:23:58 archlinux NetworkManager[224]: <info> WiFi enabled by radio killswitch; enabled by state file
Jan 04 18:23:58 archlinux NetworkManager[224]: <info> WWAN enabled by radio killswitch; enabled by state file
Jan 04 18:23:58 archlinux NetworkManager[224]: <info> WiMAX enabled by radio killswitch; enabled by state file
Jan 04 18:23:58 archlinux NetworkManager[224]: <info> Networking is enabled by state file
Jan 04 18:23:58 archlinux NetworkManager[224]: <warn> failed to allocate link cache: (-26) Protocol mismatch
Jan 04 18:23:58 archlinux NetworkManager[224]: <info> (enp3s0): carrier is ON
Jan 04 18:23:58 archlinux NetworkManager[224]: <info> (enp3s0): new Ethernet device (driver: 'r8169' ifindex: 2)
Jan 04 18:23:58 archlinux NetworkManager[224]: <info> (enp3s0): exported as /org/freedesktop/NetworkManager/Devices/0
Jan 04 18:23:58 archlinux NetworkManager[224]: <info> (enp3s0): device state change: unmanaged -> unavailable (reason 'managed') [10 20 2]
Jan 04 18:23:58 archlinux NetworkManager[224]: <info> (enp3s0): preparing device.
Jan 04 18:23:58 archlinux NetworkManager[224]: <info> (enp3s0): deactivating device (reason 'managed') [2]
Jan 04 18:23:58 archlinux NetworkManager[224]: <warn> /sys/devices/virtual/net/lo: couldn't determine device driver; ignoring...
Jan 04 18:23:58 archlinux NetworkManager[224]: <warn> /sys/devices/virtual/net/lo: couldn't determine device driver; ignoring...
Jan 04 18:23:58 archlinux NetworkManager[224]: <info> (enp3s0): device state change: unavailable -> disconnected (reason 'none') [20 30 0]
Jan 04 18:23:58 archlinux NetworkManager[224]: <warn> Couldn't get managed objects: GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name
Jan 04 18:23:58 archlinux NetworkManager[224]: <info> ModemManager disappeared from bus
Jan 04 18:23:59 archlinux NetworkManager[224]: <info> ModemManager available in the bus
Jan 04 18:23:59 archlinux dnsmasq[407]: started, version 2.68 cachesize 150
Jan 04 18:23:59 archlinux dnsmasq[407]: compile time options: IPv6 GNU-getopt DBus no-i18n no-IDN DHCP DHCPv6 no-Lua TFTP no-conntrack ipset auth
Jan 04 18:23:59 archlinux dnsmasq[407]: DBus support enabled: connected to system bus
Jan 04 18:23:59 archlinux dnsmasq[407]: no servers found in /etc/resolv.conf, will retry
Jan 04 18:23:59 archlinux dnsmasq[407]: read /etc/hosts - 2 addresses
Jan 04 18:24:12 archlinux NetworkManager[224]: <warn> (cdc-wdm0): failed to look up interface index
Jan 04 18:24:12 archlinux NetworkManager[224]: <info> (cdc-wdm0): new Broadband device (driver: 'option1, qmi_wwan' ifindex: 0)
Jan 04 18:24:12 archlinux NetworkManager[224]: <info> (cdc-wdm0): exported as /org/freedesktop/NetworkManager/Devices/1
Jan 04 18:24:12 archlinux NetworkManager[224]: <info> (cdc-wdm0): device state change: unmanaged -> unavailable (reason 'managed') [10 20 2]
Jan 04 18:24:12 archlinux NetworkManager[224]: <info> (cdc-wdm0): deactivating device (reason 'managed') [2]
Jan 04 18:24:12 archlinux NetworkManager[224]: <info> (cdc-wdm0): device state change: unavailable -> disconnected (reason 'none') [20 30 0]
Jan 04 18:25:29 archlinux NetworkManager[224]: <info> (cdc-wdm0) modem state changed, 'disabled' --> 'enabling' (reason: user-requested)
Jan 04 18:25:30 archlinux NetworkManager[224]: <info> (cdc-wdm0) modem state changed, 'enabling' --> 'registered' (reason: user-requested)
Jan 04 18:25:30 archlinux NetworkManager[224]: <info> WWAN now enabled by management service
Jan 04 18:25:32 archlinux NetworkManager[224]: <info> Activation (cdc-wdm0) starting connection 'O2'
Jan 04 18:25:32 archlinux NetworkManager[224]: <info> (cdc-wdm0): device state change: disconnected -> prepare (reason 'none') [30 40 0]
Jan 04 18:25:32 archlinux NetworkManager[224]: <info> NetworkManager state is now CONNECTING
Jan 04 18:25:32 archlinux NetworkManager[224]: <info> Activation (cdc-wdm0) Stage 1 of 5 (Device Prepare) scheduled...
Jan 04 18:25:32 archlinux NetworkManager[224]: <info> Activation (cdc-wdm0) Stage 1 of 5 (Device Prepare) started...
Jan 04 18:25:32 archlinux NetworkManager[224]: <info> Activation (cdc-wdm0) Stage 1 of 5 (Device Prepare) complete.
Jan 04 18:25:32 archlinux NetworkManager[224]: <info> (cdc-wdm0) modem state changed, 'registered' --> 'connecting' (reason: user-requested)
Jan 04 18:25:35 archlinux NetworkManager[224]: <info> (cdc-wdm0) modem state changed, 'connecting' --> 'connected' (reason: user-requested)
Jan 04 18:25:35 archlinux NetworkManager[224]: <info> Activation (cdc-wdm0) Stage 2 of 5 (Device Configure) scheduled...
Jan 04 18:25:35 archlinux NetworkManager[224]: <info> Activation (cdc-wdm0) Stage 2 of 5 (Device Configure) starting...
Jan 04 18:25:35 archlinux NetworkManager[224]: <info> (cdc-wdm0): device state change: prepare -> config (reason 'none') [40 50 0]
Jan 04 18:25:35 archlinux NetworkManager[224]: <info> Activation (cdc-wdm0) Stage 2 of 5 (Device Configure) successful.
Jan 04 18:25:35 archlinux NetworkManager[224]: <info> Activation (cdc-wdm0) Stage 3 of 5 (IP Configure Start) scheduled.
Jan 04 18:25:35 archlinux NetworkManager[224]: <info> Activation (cdc-wdm0) Stage 2 of 5 (Device Configure) complete.
Jan 04 18:25:35 archlinux NetworkManager[224]: <info> Activation (cdc-wdm0) Stage 3 of 5 (IP Configure Start) started...
Jan 04 18:25:35 archlinux NetworkManager[224]: <info> (cdc-wdm0): device state change: config -> ip-config (reason 'none') [50 70 0]
Jan 04 18:25:35 archlinux NetworkManager[224]: <info> Activation (wwp0s29f7u1i1) Beginning DHCPv4 transaction (timeout in 45 seconds)
Jan 04 18:25:35 archlinux NetworkManager[224]: <info> dhclient started with pid 677
Jan 04 18:25:35 archlinux NetworkManager[224]: <info> Activation (cdc-wdm0) Stage 4 of 5 (IPv6 Configure Timeout) scheduled...
Jan 04 18:25:35 archlinux NetworkManager[224]: <info> Activation (cdc-wdm0) Stage 3 of 5 (IP Configure Start) complete.
Jan 04 18:25:35 archlinux NetworkManager[224]: <info> Activation (cdc-wdm0) Stage 4 of 5 (IPv6 Configure Timeout) started...
Jan 04 18:25:35 archlinux NetworkManager[224]: <info> Activation (cdc-wdm0) Stage 4 of 5 (IPv6 Configure Timeout) complete.
Jan 04 18:25:35 archlinux dhclient[677]: Internet Systems Consortium DHCP Client 4.2.5-P1
Jan 04 18:25:35 archlinux dhclient[677]: Copyright 2004-2013 Internet Systems Consortium.
Jan 04 18:25:35 archlinux dhclient[677]: All rights reserved.
Jan 04 18:25:35 archlinux dhclient[677]: For info, please visit https://www.isc.org/software/dhcp/
Jan 04 18:25:35 archlinux dhclient[677]: Jan 04 18:25:35 archlinux NetworkManager[224]: <info> (wwp0s29f7u1i1): DHCPv4 state changed nbi -> preinit
Jan 04 18:25:35 archlinux dhclient[677]: Listening on LPF/wwp0s29f7u1i1/06:b4:63:3e:31:77
Jan 04 18:25:35 archlinux dhclient[677]: Sending on LPF/wwp0s29f7u1i1/06:b4:63:3e:31:77
Jan 04 18:25:35 archlinux dhclient[677]: Sending on Socket/fallback
Jan 04 18:25:35 archlinux dhclient[677]: DHCPREQUEST on wwp0s29f7u1i1 to 255.255.255.255 port 67
Jan 04 18:25:35 archlinux dhclient[677]: DHCPNAK from 100.80.15.1
Jan 04 18:25:35 archlinux NetworkManager[224]: <info> (wwp0s29f7u1i1): DHCPv4 state changed preinit -> expire
Jan 04 18:25:35 archlinux dhclient[677]: DHCPDISCOVER on wwp0s29f7u1i1 to 255.255.255.255 port 67 interval 6
Jan 04 18:25:35 archlinux NetworkManager[224]: <info> (wwp0s29f7u1i1): DHCPv4 state changed expire -> preinit
Jan 04 18:25:35 archlinux dhclient[677]: DHCPREQUEST on wwp0s29f7u1i1 to 255.255.255.255 port 67
Jan 04 18:25:35 archlinux dhclient[677]: DHCPOFFER from 100.80.15.1
Jan 04 18:25:35 archlinux dhclient[677]: DHCPACK from 100.80.15.1
Jan 04 18:25:35 archlinux dhclient[677]: bound to 100.80.15.16 -- renewal in 3344 seconds.
Jan 04 18:25:35 archlinux NetworkManager[224]: <info> (wwp0s29f7u1i1): DHCPv4 state changed preinit -> bound
Jan 04 18:25:35 archlinux NetworkManager[224]: <info> address 100.80.15.16
Jan 04 18:25:35 archlinux NetworkManager[224]: <info> prefix 27 (255.255.255.224)
Jan 04 18:25:35 archlinux NetworkManager[224]: <info> gateway 100.80.15.1
Jan 04 18:25:35 archlinux NetworkManager[224]: <info> nameserver '8.8.8.8'
Jan 04 18:25:35 archlinux NetworkManager[224]: <info> nameserver '62.40.32.33'
Jan 04 18:25:35 archlinux NetworkManager[224]: <info> Activation (cdc-wdm0) Stage 5 of 5 (IPv4 Configure Commit) scheduled...
Jan 04 18:25:35 archlinux NetworkManager[224]: <info> Activation (cdc-wdm0) Stage 5 of 5 (IPv4 Commit) started...
Jan 04 18:25:36 archlinux NetworkManager[224]: <info> (cdc-wdm0): device state change: ip-config -> secondaries (reason 'none') [70 90 0]
Jan 04 18:25:36 archlinux NetworkManager[224]: <info> Activation (cdc-wdm0) Stage 5 of 5 (IPv4 Commit) complete.
Jan 04 18:25:36 archlinux NetworkManager[224]: <info> (cdc-wdm0): device state change: secondaries -> activated (reason 'none') [90 100 0]
Jan 04 18:25:36 archlinux NetworkManager[224]: <info> NetworkManager state is now CONNECTED_GLOBAL
Jan 04 18:25:36 archlinux NetworkManager[224]: <info> Policy set 'O2' (wwp0s29f7u1i1) as default for IPv4 routing and DNS.
Jan 04 18:25:36 archlinux NetworkManager[224]: <info> Writing DNS information to /usr/bin/resolvconf
Jan 04 18:25:36 archlinux NetworkManager[224]: <info> Activation (cdc-wdm0) successful, device activated.
Jan 04 18:25:42 archlinux NetworkManager[224]: <info> Activation (enp3s0) starting connection 'vu+'
Jan 04 18:25:42 archlinux NetworkManager[224]: <info> (enp3s0): device state change: disconnected -> prepare (reason 'none') [30 40 0]
Jan 04 18:25:42 archlinux NetworkManager[224]: <info> Activation (enp3s0) Stage 1 of 5 (Device Prepare) scheduled...
Jan 04 18:25:42 archlinux NetworkManager[224]: <info> Activation (enp3s0) Stage 1 of 5 (Device Prepare) started...
Jan 04 18:25:42 archlinux NetworkManager[224]: <info> Activation (enp3s0) Stage 2 of 5 (Device Configure) scheduled...
Jan 04 18:25:42 archlinux NetworkManager[224]: <info> Activation (enp3s0) Stage 1 of 5 (Device Prepare) complete.
Jan 04 18:25:42 archlinux NetworkManager[224]: <info> Activation (enp3s0) Stage 2 of 5 (Device Configure) starting...
Jan 04 18:25:42 archlinux NetworkManager[224]: <info> (enp3s0): device state change: prepare -> config (reason 'none') [40 50 0]
Jan 04 18:25:42 archlinux NetworkManager[224]: <info> Activation (enp3s0) Stage 2 of 5 (Device Configure) successful.
Jan 04 18:25:42 archlinux NetworkManager[224]: <info> Activation (enp3s0) Stage 3 of 5 (IP Configure Start) scheduled.
Jan 04 18:25:42 archlinux NetworkManager[224]: <info> Activation (enp3s0) Stage 2 of 5 (Device Configure) complete.
Jan 04 18:25:42 archlinux NetworkManager[224]: <info> Activation (enp3s0) Stage 3 of 5 (IP Configure Start) started...
Jan 04 18:25:42 archlinux NetworkManager[224]: <info> (enp3s0): device state change: config -> ip-config (reason 'none') [50 70 0]
Jan 04 18:25:42 archlinux NetworkManager[224]: <info> Activation (enp3s0) Stage 5 of 5 (IPv4 Configure Commit) scheduled...
Jan 04 18:25:42 archlinux NetworkManager[224]: <info> Activation (enp3s0) Beginning IP6 addrconf.
Jan 04 18:25:42 archlinux NetworkManager[224]: <info> Activation (enp3s0) Stage 3 of 5 (IP Configure Start) complete.
Jan 04 18:25:42 archlinux NetworkManager[224]: <info> Activation (enp3s0) Stage 5 of 5 (IPv4 Commit) started...
Jan 04 18:25:42 archlinux dnsmasq[407]: reading /etc/resolv.conf
Jan 04 18:25:42 archlinux dnsmasq[407]: using nameserver 62.40.32.33#53
Jan 04 18:25:42 archlinux dnsmasq[407]: using nameserver 8.8.8.8#53
Jan 04 18:25:43 archlinux NetworkManager[224]: <info> Executing: /usr/bin/iptables --table filter --insert INPUT --in-interface enp3s0 --protocol t
Jan 04 18:25:43 archlinux NetworkManager[224]: <info> Executing: /usr/bin/iptables --table filter --insert INPUT --in-interface enp3s0 --protocol u
Jan 04 18:25:43 archlinux NetworkManager[224]: <info> Executing: /usr/bin/iptables --table filter --insert INPUT --in-interface enp3s0 --protocol t
Jan 04 18:25:43 archlinux NetworkManager[224]: <info> Executing: /usr/bin/iptables --table filter --insert INPUT --in-interface enp3s0 --protocol u
Jan 04 18:25:43 archlinux NetworkManager[224]: <info> Executing: /usr/bin/iptables --table filter --insert FORWARD --in-interface enp3s0 --jump REJ
Jan 04 18:25:43 archlinux NetworkManager[224]: <info> Executing: /usr/bin/iptables --table filter --insert FORWARD --out-interface enp3s0 --jump RE
Jan 04 18:25:43 archlinux NetworkManager[224]: <info> Executing: /usr/bin/iptables --table filter --insert FORWARD --in-interface enp3s0 --out-inte
Jan 04 18:25:43 archlinux NetworkManager[224]: <info> Executing: /usr/bin/iptables --table filter --insert FORWARD --source 10.42.0.0/255.255.255.0
Jan 04 18:25:43 archlinux NetworkManager[224]: <info> Executing: /usr/bin/iptables --table filter --insert FORWARD --destination 10.42.0.0/255.255.
Jan 04 18:25:43 archlinux NetworkManager[224]: <info> Executing: /usr/bin/iptables --table nat --insert POSTROUTING --source 10.42.0.0/255.255.255.
Jan 04 18:25:43 archlinux NetworkManager[224]: <info> Starting dnsmasq...
Jan 04 18:25:43 archlinux NetworkManager[224]: <info> (enp3s0): device state change: ip-config -> secondaries (reason 'none') [70 90 0]
Jan 04 18:25:43 archlinux NetworkManager[224]: <info> Activation (enp3s0) Stage 5 of 5 (IPv4 Commit) complete.
Jan 04 18:25:43 archlinux NetworkManager[224]: <info> (enp3s0): device state change: secondaries -> activated (reason 'none') [90 100 0]
Jan 04 18:25:43 archlinux NetworkManager[224]: <info> Activation (enp3s0) successful, device activated.
Jan 04 18:25:43 archlinux NetworkManager[224]: <warn> dnsmasq exited with error: Network access problem (address in use; permissions; etc) (2)
Jan 04 18:25:43 archlinux NetworkManager[224]: <info> (enp3s0): device state change: activated -> failed (reason 'sharing-start-failed') [100 120 1
Jan 04 18:25:43 archlinux NetworkManager[224]: <warn> Activation (enp3s0) failed for connection 'vu+'
Jan 04 18:25:43 archlinux NetworkManager[224]: <info> (enp3s0): device state change: failed -> disconnected (reason 'none') [120 30 0]
Jan 04 18:25:43 archlinux NetworkManager[224]: <info> (enp3s0): deactivating device (reason 'none') [0]
Jan 04 18:25:43 archlinux NetworkManager[224]: <info> Policy set 'O2' (wwp0s29f7u1i1) as default for IPv4 routing and DNS.
Jan 04 18:25:43 archlinux NetworkManager[224]: <info> Executing: /usr/bin/iptables --table nat --delete POSTROUTING --source 10.42.0.0/255.255.255.
Jan 04 18:25:43 archlinux NetworkManager[224]: <info> Executing: /usr/bin/iptables --table filter --delete FORWARD --destination 10.42.0.0/255.255.
Jan 04 18:25:43 archlinux NetworkManager[224]: <info> Executing: /usr/bin/iptables --table filter --delete FORWARD --source 10.42.0.0/255.255.255.0
Jan 04 18:25:43 archlinux NetworkManager[224]: <info> Executing: /usr/bin/iptables --table filter --delete FORWARD --in-interface enp3s0 --out-inte
Jan 04 18:25:43 archlinux NetworkManager[224]: <info> Executing: /usr/bin/iptables --table filter --delete FORWARD --out-interface enp3s0 --jump RE
Jan 04 18:25:43 archlinux NetworkManager[224]: <info> Executing: /usr/bin/iptables --table filter --delete FORWARD --in-interface enp3s0 --jump REJ
Jan 04 18:25:43 archlinux NetworkManager[224]: <info> Executing: /usr/bin/iptables --table filter --delete INPUT --in-interface enp3s0 --protocol u
Jan 04 18:25:43 archlinux NetworkManager[224]: <info> Executing: /usr/bin/iptables --table filter --delete INPUT --in-interface enp3s0 --protocol t
Jan 04 18:25:43 archlinux NetworkManager[224]: <info> Executing: /usr/bin/iptables --table filter --delete INPUT --in-interface enp3s0 --protocol u
Jan 04 18:25:43 archlinux NetworkManager[224]: <info> Executing: /usr/bin/iptables --table filter --delete INPUT --

Unable to execute JAR files

I am unable to execute jar files and applets. Also, the Java Web Start and the Java Plugin Control Panel will not load. I have unloaded the JRE and installed other versions. To date I have loaded and unloaded the following:
1.4.1
1.4.2_01, _02, _04
1.4.2_04 SDK
But no change in the outcome.
The javaw application starts but does not load the jar file.
The applets and jar files run fine on other computers with any of those JRE/SDK's installed.
Any suggestions would be helpful.

Command line
To create a JAR file >jar cvf filename.jar filename.class(s)
To view the contents of a JAR file >jar tvf filename.jar
To extract the contents of a JAR file >jar xf filename.jar
To extract specific files from a JAR file >jar xf filename.jar archived-file(s)
To run an application packaged as a JAR file
>jar xvf filename.jar META-INF/MANIFEST.MF
The above will place META-INF/MANIFEST.MF file in your working directory. Open this file in text editor. Under Version, type in
Main-Class: filename
example;
Manifest-Version: 1.0
Main-Class: SelectPurchase
Created-By: 1.3.0 (Sun Microsystems Inc.)
save file
update META-INF/MANIFEST.MF file in jar file with;
jar umf META-INF/MANIFEST.MF filename.jarto run jar file from command line;
java -jar filename.jarTo run an application packaged as a JAR file
(version 1.1) jre -cp app.jar MainClass
(version 1.2 -- requires Main-Class
manifest header)
To invoke an applet packaged as a JAR file <applet code=AppletClassName.class
archive="JarFileName.jar"
width=width height=height>
</applet>
Does anyone know how to get the application to run by clicking on a Desktop Icon?

Links not working in executable jar

I have a problem with my java application
html and images files do not work in executable jar
though the application works normally
I tried some suggestion but I received an exception thread indicating problem at
ImageIcon iChing = new ImageIcon(imageURL);
Please could you help me thank you so much
here is the class
public class Main extends JFrame
* objects required for the GUI: JFrame,JLabel, JButton, ImageIcon, JPanel,
* Dimension
private static final long serialVersionUID = 1L;
JButton jbEnter;
ImageIcon iChing, logo;
JPanel buttonPanel, ImagePanel;
JLabel jlbIching;
Dimension dim;
URL imageURL;
File fileName;
// Class constructor to create the GUI
public Main()
Container container = getContentPane();
URL imageURL = this.getClass().getClassLoader().getResource("src/myFiles/iching.gif");
ImageIcon iChing = new ImageIcon(imageURL);
jlbIching = new JLabel(iChing);
// button to go to the Title class
jbEnter = new JButton("Enter ");
jbEnter.setBorderPainted(false);
jbEnter.setFont(new Font("Edwardian Script ITC", Font.BOLD, 42));
jbEnter.setBackground(new Color(0, 0, 50));
jbEnter.setForeground(Color.YELLOW);
jbEnter.addActionListener(new ActionListener() {
// method to render the current frame invisible and trigger the
// Welcome Menu
public void actionPerformed(ActionEvent e)
setVisible(false);
// this line does not work...............
new Title();
} // close the actionPerformed(ActionEvent e) Method
}); // close the addActionListener(new ActionListener() method
// Panel holding the decorative image and Button
ImagePanel = new JPanel();
ImagePanel.add(jlbIching);
ImagePanel.setBackground(new Color(0, 0, 50));
buttonPanel = new JPanel();
buttonPanel.add(jbEnter);
buttonPanel.setBackground(new Color(0, 0, 50));
// setting up of the panels position
container.add(ImagePanel, BorderLayout.CENTER);
container.add(buttonPanel, BorderLayout.SOUTH);
dim = Toolkit.getDefaultToolkit().getScreenSize();
dim.width = dim.width / 2 - 300;
dim.height = dim.height / 2 - 250;
setBounds(dim.width, dim.height, 400, 400);
setSize(600, 500);
setResizable(false);
setVisible(true);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
//To set the icon for the application. Top left hand corner.
//this.setIconImage(Image);
setIconImage(new ImageIcon("src/myFiles/ichingRose.gif").getImage());
} // close the Constructor
* the main method for the program.
* @param args
* The command-line arguments.
public static void main(String[] args)
new Main();
} // close the main method
} // close the Main class

Thank you very much for your quick reply and really hope you can help me a little more
it's so frustrating
I do not really know about the relative path but here is my xml file
<?xml version="1.0" encoding="UTF-8" ?>
<project default="jar">

<target name="jar">

<mkdir dir="ant"/>
<mkdir dir="work"/>
     <mkdir dir="ant/myFiles"/

<javac
debug="yes"
destdir="ant"
source="1.6"
target="1.6">

<src path="src"/>
</javac>
     <copy todir="ant/myFiles"><fileset dir="src/myFiles"></fileset></copy>

<jar
               jarfile="work/BookOfChanges.jar"
basedir="ant"
>

<manifest>

<attribute name="Main-Class" value="iChing.Main"/>
</manifest>
</jar>
</target>
</project>

I dont see the point of using Ant Build compared to executable Jars?

I always think that to complete a project you successfully build it. And i thought that building is done automatically if you create an executable JAR? So what is ANT for?
Arent Executables is the same as building your project?

paulcw wrote:
They are all unnecessary for a single person doing small projects (although often still necessary).I assume you meant "(although often still useful)".
And furthermore you may find that the vast majority of your time programming professionally isn't the programming, but just managing these other aspects.It is a good day for me when that is not the case ;-)
There should be a class in university: "industrial practices". It would have little or no CS theory but all the stuff that you learn the first year on the job (often painfully).The company I work in really likes to hire young developers, which often means that they come right from school (gladly, we have some good IT-centric schools in the area). They usually get some introduction in some of these aspects in school (usually mostly version control, bug tracking and a little bit of automated builds). But even if they heard about them, used them for a simple project and get the general idea, they still don't believe them to be necessary until they see what a pain in the back it can be not to have all that in a medium-sized project.

Can't 'see" other computers on my home network

I just added a third Mac to my home network. We already had a G4 running OSX.2 and an iBook running OSX.4. I've now added a G4 running OSX.4, but the new computer doesn't "see" the other computers in the network list.
On the first G4, if I browse the network (by pressing apple-K) I see the other two computers, the iBook and the new G4.
On the iBook, if I open a finder window and click the "Network" icon, I get the other two computers listed.
But on the new G4, if I open a finder window and select the Network icon, I get three folders, "Applications", "Library", and "Users". And these three folders are apparently empty.
I DO have internet connection, so the connection is okay. And if I press apple-K to get a server list, and type in the IP address of one of the other two computers, I can access them that way. But why don't they show up on the Network list? What do I have configured wrong? Obviously, I CAN use the "apple-k" connect-to-servers-by-typing-in-the-IP-address method, but it's not as "nice" as having them just show up in the network window.
I'm sure it's something simple that I missed, and I'll probably feel like an idiot when someone points it out, but fire away folks!
G4 867Mhz Mac OS X (10.4.8)

make sure you have your automounter running. Do this in a terminal to make sure:
ps aux|grep -i automount
If it is not running, you may have turned it off using some utility (bad idea). It's controlled by the NFS startup item and should be enabled so the OSX API can listen for traffic on port 548, which is the Apple Fileshare Protocol port of register.
if this is confusing, I can give more detail when I arrive at my home.

Adding a jar to the classpath of an executable jar (mixing -jar and -cp)

Hello,
frankly I hesitated over posting this to "New to Java"; my apologies (but also, eternal gratefulness) if there is an ultra-simple answer I have overlooked...
I integrate a black-box app (I'm not supposed to have the source) that comes packaged as an executable jar (with a Manifest.MF that specifies the main class and a bunch of dependent jars), along with a few dependent jars and a startup script. Long story short, the application code supports adding jars in the classpath, but I can't find a painless way to add a jar in its "classpath".
The app's "vendor" (another department of my customer company) has a slow turnaround on support requests, so while waiting for their suggestion as to how exactly to integrate custom jars, I'm trying to find a solution at the pure Java level.
The startup script features a "just run the jar" launch line:
java -jar startup.jarI tried tweaking this line to add a custom jar in the classpath
java -cp mycustomclasses.jar -jar startup.jarBut that didn't seem to work ( NoClassDefFound at the point where the extension class is supposed to be loaded).
I tried various combination of order, -cp/-classpath, using the CLASSPATH environment variable,... and eventually gave up and devised a manual launch line, which obviously worked:
java -cp startup.jar;dependency1.jar;dependency2.jar;mycustomclasses.jar fully.qualified.name.of.StartupClassI resent this approach though, which not only makes me have to know the main class of the app, but also forces me to specify all the dependencies explicitly (the whole content of the Manifest's class-path entry).
I'm surprised there isn't another approach: really, can't I mix -jar and -cp options?
- [url http://download.oracle.com/javase/6/docs/technotes/tools/windows/classpath.html]This document (apparently a bible on the CLASSPATH), pointed out by a repited forum member recently, does not document the -jar option.
- the [url http://download.oracle.com/javase/tutorial/deployment/jar/run.html]Java tutorial describes how to use the -jar option, but does not mention how it could play along with -cp
Thanks in advance, and best regards,
J.
Edited by: jduprez on Dec 7, 2010 11:35 PM
Ahem, the "Java application launcher" page bundled with the JDK doc (http://download.oracle.com/javase/6/docs/technotes/tools/windows/java.html) specifies that +When you use [the -jar] option, the JAR file is the source of all user classes, and other user class path settings are ignored+
So this behavior is deliberate indeed... my chances diminish to find a way around other than specifying the full classpath and main class...

I would have thought that the main-class attribute of the JAR you name in the -jar option is the one that is executed.Then I still have the burden of copying that from the initial startup.jar's manifest. Slightly less annoying than copying the whole Class-path entry, but it's an impediment to integrating it as a "black-box".
The 'cascading' behavior is implicit in the specification
I know at least one regular in addition to me that would issue some irony about putting those terms together :o)
Anyway, thank you for confirming the original issue, and merci beaucoup for your handy "wrapper" trick.
I'll revisit the post markers once I've actually tried it.
Best regards,
Jérôme

Class not found error while executing jar file

I have written a java code in which i am connecting to database....when i run the class file using......java class_filename it works........
but when i run the jar file using .......java -jar jar_name ...yi gives me the error as 'Class not found'......
can anybody help me please......
Thanks and Regards,
Siddhesh

that class is part of jar file.....in classpath i have included zip files for jdbc ...to get databse connection.....and the jar being executed ................still it gives the error ClassDefnotfound which i think is due to database connection problem.....the exception is raised while.....
Class.ForName("Driver_name").newInstance();/ This driver is present in zip files that i have added in classpath....
above statement doesn,t giv error while i execute the class file............but exception while executing jar file only..
Thnaks and regards,
siddhesh

Why -jar option used to install a software which is in executable jar file?

Hi all,
i have a query, i have a generic installer which is used to install the oracle weblogic 10.3 software in unix platform(i.e., which is in .jar extension) which is executable jar file.
To install this software which have to use -jar option to install
java -jar net_server<version>_generic.jar
my question that why we use -jar option to install or to extract the software
can any one clarify my doubt...
thanks in advance
abhi
Edited by: sumanth_abhi on Jan 27, 2009 11:50 PM

According to the Jar Guide (http://java.sun.com/j2se/1.4.2/docs/guide/jar/jarGuide.html)
Executable Jar Files
On Microsoft Windows systems, the Java 2 Runtime Environment's installation program will register a default association for Jar files so that double-clicking a Jar file on the desktop will automatically run it with javaw -jar. Dependent extensions bundled with the application will also be loaded automatically. This feature makes the end-user runtime environment easier to use on Microsoft Windows systems.
The Solaris 2.6 kernel has already been extended to recognize the special "magic" number that identifies a Jar file, and to invoke java -jar on such a Jar file as if it were a native Solaris executable. A application packaged in a Jar file can thus be executed directly from the command line or by clicking an icon on the CDE desktop.
Despite that every JAR file can be executed as a program if and only if the META-INF/Manifest.mf contains the Main-Class tag. This done through java -jar jarfile.jar
--olaf

When I replaced my PC desktop with a Mac Mini and hooked up my HP printer to it, I discovered my other computers on the Wi-Fi network could no longer access the printer. The manual says Maverick OS will not allow PC's to access the printer. Any thoughts?

When I replaced my PC desktop with a Mac Mini and hooked up my HP printer to it, I discovered that my other computers on the Wi-Fi network could no longer access the printer. The manual says Maverick OS will not allow PC's to share the printer. Does anyone else have this problem? My printer does not have on-board Wi-Fi but, otherwise, works fine. I shouldn't have to buy a new one. Is there a OS patch out there that would open the printer port for my PC computers?

I'm assuming that on the Mac, the System Preferences -> Sharing -> Printer Sharing -> [X] HP printer -> Everyone can print is selected? That is to say, the Mac will allow anyone to print using the printer, and that you did not try to restrict who can print.
How is your network configured? Bonjour as a protocol will NOT cross a router boundary. If you have 2 or more subnets active with the PCs on one subnet and the Mac on another, that would block the PCs from seeing the Mac.
You could have multiple subnets if you have more than one router, such as an ISP provided broadband modem/router and another WiFi Router. If the PCs are talking to one router and the Mac is talking to another, that could be a 2 subnet situation. The additional routers must be put into bridge mode, which is done differently depending on the router. But the basics are to diable DHCP and NAT services on the secondary router(s) having just one active router on the network.
Also, using Bonjour Browser on my Mac, it is showing me that the printer is being advertised as using Internet Printing Protocol, so if that is something selectable on Windows, maybe you can bypass Bonjour on Windows.

HT1476 my iPhone 4 will no longer charge. It is also not recognised in iTunes. There seems to be a problem with the connector slot. I've tried other cables and other computers/plugs but the connection is not being made. Any suggestions?

my iPhone 4 will no longer charge. It is also not recognised in iTunes. There seems to be a problem with the connector slot. I've tried other cables and other computers/plugs but the connection is not being made. Any suggestions?
It seems to me that the connection port is faulty.
George

Looks like a Visit to an Apple Store or AASP (Authorized Apple Service Provider) is the Next Step...
Be sure to make an appointment first...

My external hard drive is not recognized on my new MacBook Pro, even though it is recognized on my older MacBook and other computers. Help?

Please help me find a solution to my new MacBook Pro not recognizing my hard drives. Yes, thats two hard drives I have that don't seem to work on this computer but both work on my older MacBook and many other computers.

It is formatted for both PC and Mac
I have tried finding it in Disk Utility, no dice...
Tried both USB Ports
And a reboot is still unsuccessful..

Porting executable JARs to other computers

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