I really don't understand

I have this piece of code:
private static String[] getArgs(String command){
        System.out.println(System.currentTimeMillis()-startlog+": "+"In getArgs.");
        command = command.substring(3, command.length());
        System.out.println(System.currentTimeMillis()-startlog+": "+"The command: "+command);
        String[] args = new String[0];
        int last = 0;
        System.out.println(System.currentTimeMillis()-startlog+": "+"Command length: "+command.length());
        boolean exit = false;
        int end = command.length();
        int count = 0;
        while(count<=end){//Why don't this cicle ends!?
            System.out.println(System.currentTimeMillis()-startlog+": "+"(count="+count+").");
            if(command.charAt(count)==',' || command.charAt(count)==';'){
                System.out.println(System.currentTimeMillis()-startlog+": "+"Found ',' or ';'.");
                args = addColum(args);
                args[args.length-1] = command.substring(last, count);
                System.out.println(System.currentTimeMillis()-startlog+": "+"Found arg: "+args[args.length-1]);
                last = count+1;
            count++;
        System.out.println(System.currentTimeMillis()-startlog+": "+"Returning args.");
        return args;
    }And the output is this:
14148: In getArgs.
14148: The command: TextIO.java;
14149: Command length: 12
14149: (count=0).
14149: (count=1).
14149: (count=2).
14149: (count=3).
14161: (count=4).
14161: (count=5).
14161: (count=6).
14161: (count=7).
14162: (count=8).
14162: (count=9).
14162: (count=10).
14162: (count=11).
14162: Found ',' or ';'.
14162: In addColum.
14162: Found arg: TextIO.java
14166: (count=12).
Why don't the cicle ends?

I have this piece of code:
private static String[] getArgs(String command){
System.out.println(System.currentTimeMillis()-startlog+
: "+"In getArgs.");
command = command.substring(3, command.length());
System.out.println(System.currentTimeMillis()-startlog+
: "+"The command: "+command);
String[] args = new String[0];
int last = 0;
System.out.println(System.currentTimeMillis()-startlog+
: "+"Command length: "+command.length());
boolean exit = false;
int end = command.length();
int count = 0;
while(count<=end){//Why don't this cicle ends!?
System.out.println(System.currentTimeMillis()-startlog+
: "+"(count="+count+").");
if(command.charAt(count)==',' ||
command.charAt(count)==';'){
System.out.println(System.currentTimeMillis()-startlog+
: "+"Found ',' or ';'.");
args = addColum(args);
args[args.length-1] = command.substring(last, count);
System.out.println(System.currentTimeMillis()-startlog+
: "+"Found arg: "+args[args.length-1]);
last = count+1;
count++;
System.out.println(System.currentTimeMillis()-startlog+
: "+"Returning args.");
return args;
}And the output is this:
14148: In getArgs.
14148: The command: TextIO.java;
14149: Command length: 12
14149: (count=0).
14149: (count=1).
14149: (count=2).
14149: (count=3).
14161: (count=4).
14161: (count=5).
14161: (count=6).
14161: (count=7).
14162: (count=8).
14162: (count=9).
14162: (count=10).
14162: (count=11).
14162: Found ',' or ';'.
14162: In addColum.
14162: Found arg: TextIO.java
14166: (count=12).
Why don't the cicle ends?whats printed out after
14162: Found arg: TextIO.java
14166: (count=12).

Similar Messages

Installed 11.0.3 today. Tried to update apps. iTunes response was, "You can not update this software since you have not owned the major version of this software." I REALLY don't understand. I paid for MANY applications and stole or borrowed NOTHING.

Installed 11.0.3 today. Tried to update apps. iTunes response was, "You can not update this software since you have not owned the major version of this software." I REALLY don't understand. I paid for MANY applications and stole or borrowed NOTHING.

Hi 969Polyglot969,
You may want to report an issue with the affected apps using the instructions in this article:
How to report an issue with your iTunes Store, App Store, Mac App Store, or iBookstore purchase
http://support.apple.com/kb/HT1933
I hope this helps!
- Ari

CREATIVE CENTRALE, PLEASE, I REALLY DON'T UNDERSTAND

HELP!!!! I really don't understand. I always buy creative, they sound awesome, I hate ipod, I have several players, I tell people about the hardware, but, WHY, WHY, WHY? such unimaginably amazingly good hardware and abso-lutely appalling and useless softwafre?? It really spoils the whole experience.
TAKE NOTE CREATIVE. PLEASE, PLEASE, PLEASE CAN YOU DO SOMETHING ABOUT YOUR ATROCIOUS, RUBBISH, UNSTABLE AND UNFATHOMABLY HARD TO USE AND UNINTUITIVE SOFTWARE AS IT IS TOTALLY RUINING MY OTHERWISE EXCELLENT CREATIVE EXPERIENCE!!!!!
Creative Centrale is appallingly bad, creating a new playlist is like torture, now it wont work at all and I have reinstalled it many times. I am going to (reluctantly) have to buy a new player to replace my lovely little Zen Mosaic JUST so I can get some decent software to create playlists.
Really this is beyond belief guys, best hardware out there, worst software. Want to know how Apple became no ? No, it wasnt the flashy looks, all that kudos came later, how they really became no is simple, despite continuing?
concerns over their hardware it was their fantastic, easy to use intuiti've software for ALL their products that did it.
Hell-ooooo!!! Wake up. Such a shame. Rant over.
If anyone knows of another program I can download to help me use my little Mosaic (its my friend, I listen to it every day, for hours) then please let me know. T

I have this piece of code:
private static String[] getArgs(String command){
System.out.println(System.currentTimeMillis()-startlog+
: "+"In getArgs.");
command = command.substring(3, command.length());
System.out.println(System.currentTimeMillis()-startlog+
: "+"The command: "+command);
String[] args = new String[0];
int last = 0;
System.out.println(System.currentTimeMillis()-startlog+
: "+"Command length: "+command.length());
boolean exit = false;
int end = command.length();
int count = 0;
while(count<=end){//Why don't this cicle ends!?
System.out.println(System.currentTimeMillis()-startlog+
: "+"(count="+count+").");
if(command.charAt(count)==',' ||
command.charAt(count)==';'){
System.out.println(System.currentTimeMillis()-startlog+
: "+"Found ',' or ';'.");
args = addColum(args);
args[args.length-1] = command.substring(last, count);
System.out.println(System.currentTimeMillis()-startlog+
: "+"Found arg: "+args[args.length-1]);
last = count+1;
count++;
System.out.println(System.currentTimeMillis()-startlog+
: "+"Returning args.");
return args;
}And the output is this:
14148: In getArgs.
14148: The command: TextIO.java;
14149: Command length: 12
14149: (count=0).
14149: (count=1).
14149: (count=2).
14149: (count=3).
14161: (count=4).
14161: (count=5).
14161: (count=6).
14161: (count=7).
14162: (count=8).
14162: (count=9).
14162: (count=10).
14162: (count=11).
14162: Found ',' or ';'.
14162: In addColum.
14162: Found arg: TextIO.java
14166: (count=12).
Why don't the cicle ends?whats printed out after
14162: Found arg: TextIO.java
14166: (count=12).

HT4864 I really don't understand much of this article....

I really don't understand much of this article....but would simply like to know whether I can haul in mail I receive to my gmail and/or hotmail accounts. Many thanks.
Emile

OK. Many thanks for your quick reply. My son has been trying to talk me into using iCloud for all my mail necessities on the grounds of "why have a Mac and use non-Mac programs....?" My counterpoint is that I happen to have Mac/Apple Mail bringing in my work mail from my university server; I have Hotmail which I use for certain purposes and gmai that handles my more personal mail. To simplify matters, I just open gmail which I have set up to pull in my work mai, my hotmail messages and, of course, my gmail messages...all with one click, basically. This, among other things, allows me to to see my work mail when I am not in town.
Your answer, unless I misunderstood it, tells me that I cannot do the same with iCloud, so thanks for clarifying this.
Emile
Message was edited by: nucho

Hi..I really don't understand how can labview can be a server, can you explain and give me some examples with steps on how to make the labview as a server? Please......

nn
Solved!
Go to Solution.

erm ok i will explain...
actually..i know that labview can be a client or server. when the labview be a client, it can access other enable activeX application such as excel or word. i manage to do that a little such as to open excel file and save it at another location by using activeX functions or using the report generation toolkit. yes, i already know and understand the flow or concept of how the labview can be a client. But by using others activeX application especially excel, how can we make the labview be a server? i just need a very easy example and few steps for me to understand how can labview be a server or how excel can control the labview properties?
really desperate to increase new knowledge.....:-)
thank you very much for helping me....

HT201342 Why do I need a iCloud address I really don't understand what e iCloud is? I'd like to sync calendars from my iPad to my Mac will this help we achieve this open to anyone's input w previews experience!

Why do I need an iCloud email address? I mean I know I already have one set up but have never activated it what is the benefit?
Also does it make it easier to sync items between devices ie I'd like to get the calendar on my iPad 2 to transfer to my MacBook pro and vice versa.
Is it possible to activate iCloud syncing with out the iCloud email?
Any advice would be much appreciated

You can go to Settings>iCloud and enter you Apple ID to set up your account, then turn on syncing for the data you want to sync. If you don't want to use iCloud email, don't turn Mail to On. If you're Mac is runniing OS X 10.7.2 or later, you can sync it with your iCloud account. You do this by going to System Preferences>iCloud, signing into your iCloud account, then checking the data you want to sync with iCloud (see http://www.apple.com/icloud/setup/mac.html).
If you sync your calendar on both your phone and your Mac with your iCloud account, then will remain in sync using iCloud.

I really don't understand the Kodak Lawsuit against Sun w/rt Java

Can some one elaborate? I mean it was only $1 Billion dollars
http://www.rochesterdandc.com/apps/pbcs.dll/article?AID=/20041002/BUSINESS/410020333&SearchID=73185676035359
i don't think "asking for help" is patentable
The patents describe a method by which a program can "ask for help" from another application to carry out certain computer-oriented functions. That's generally similar to the way Java operates, according to Kodak and other experts.

forget the last link, the patents in question are:
from my reading of these they describe systems that process objects that exchange data, and have common attributes (eg .equals, .hashcode)
http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=/netahtml/srchnum.htm&r=1&f=G&l=50&s1=5206951.WKU.&OS=PN/5206951&RS=PN/5206951
http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=/netahtml/srchnum.htm&r=1&f=G&l=50&s1=5421012.WKU.&OS=PN/5421012&RS=PN/5421012
http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=/netahtml/srchnum.htm&r=1&f=G&l=50&s1=5226161.WKU.&OS=PN/5226161&RS=PN/5226161

Past exam paper- question I really don't understand

I'm doing an open and distance learning degree and was given a past exam paper on programming. One of the questions I absolutely have no idea what it's on about. Can somebody please shed some light on it as we are meant to be able to do it with ease (bugger!)
Question
The class "Machine", has two methods whose signatures are shown below:
public boolean press() throws BrokenException
public void change(Machine m)
Write a fragment of Java code which calls "press" on a "Machine" object "m1", and only if that gives a BrokenException calls "press" on a "Machine" object "m2". If the result of either "press" call is "true", the code should then call method "change" on the "Machine" object out of "m1" and "m2" whose "press" call succeeded, with the other "Machine" object as the argument to that call.
I understand that to call m1 and m2 the codes would be:
m1.press();
m2.press();
then perhaps finding which on is true would be:
if ((m1.press()||(m2.press())==true)
then I haven't a clue how to implement the BrokenException and the rest of what the question asks.
Please help me as I'm going nuts.
Chris

Well, I guess it would be much clearer if I explain the code that I gave.
First, the program enters the try block. It makes a call to m1.press() inside an if statement. If this returns true, then as the question asks you, it will make a call on m1.change(m2), thst is passing the other object as the parameter.
In case m1.press() throws a BrokenException, then it is caught. After catching, it obviously makes a call to press() method in object m2...that is m2.press(). If this returns true, then m2.change(m1) is executed.
I have changed the code a bit. If m2.press() throws a BrokenException, then it is caught in the inner try...catch block.
The code is:
try
if(m1.press()) m1.change(m2);
catch (BrokenException excp)
try
if(m2.press()) m2.change(m1);
catch(BrokenException ex)
//do whatever or nothing.
}//End of inner try...catch block
}//End of outer try...catch block
Hope this makes things clear.

HT201210 i really don't understand this error stuff about update, what can i do.

what can i do about this error from update, i want it in simple terms cos i cnt start reading long essays

Try a manual install, as outlined in the link below.
Basic troubleshooting steps
17" 2.2GHz i7 Quad-Core MacBook Pro  8G RAM  750G HD + OCZ Vertex 3 SSD Boot HD 
Got problems with your Apple iDevice-like iPhone, iPad or iPod touch? Try Troubleshooting 101
 In Memory of Steve Jobs 

Slow Macbook Pro- please help, I don't understand previous advice.

Hello all,
I have a very slow Macbook Pro running on Lion 10.7.3.
I looked up this problem on the forums before I sent this message but I didn't quite understand the advice. I have been on something called Disk Utility and Activity Monitor but don't really understand what I'm looking for. It seems a large percentage of my mac is 'idle' if that makes sense. Someone said to look at Page Out but I really don't understand what that means and what sort of numbers are normal.
I do have some storage left so I don't think it could be that. A lot of my gigabytes seem to be taken up by movies and 'other'. I've tried deleted a load of videos but it hardly made a difference. I have Mac Mail and it seems very slow on my Macbook compared to on my Ipad and iphone. iCal is also very slow on here and it always takes a while to load internet pages. It isnt the wifi connection.
Please help and bear in mind I am by no means a Mac whizz so you might have to talk in layman's terms!
Thanks,
Amy

If you have more than ten or so files or folders on your Desktop, move them, temporarily at least, somewhere else in your home folder.
If iCloud is enabled, disable it.
Disconnect all wired peripherals. Launch the usual set of applications you use when you notice the problem.
Step 1
Launch the Activity Monitor application in any of the following ways:
☞ Enter the first few letters of its name into a Spotlight search. Select it in the results (it should be at the top.)
☞ In the Finder, select Go ▹ Utilities from the menu bar, or press the key combination shift-command-U. The application is in the folder that opens.
☞ If you’re running Mac OS X 10.7 or later, open LaunchPad. Click Utilities, then Activity Monitor in the page that opens.
Select the CPU tab.
Select All Processes from the menu in the toolbar, if not already selected.
Click the heading of the % CPU column in the process table to sort the entries by CPU usage. You may have to click it twice to get the highest value at the top. What is it, and what is the process? Also post the values for % User, % System, and % Idle at the bottom of the window.
Select the System Memory tab. What values are shown in the bottom part of the window for Page outs and Swap used?
Step 2
Launch the Console application in the same way as above, and select “kernel.log” from the file list. Post the dozen or so most recent messages in the log — the text, please, not a screenshot.
If there are runs of repeated messages, post only one example of each. Do not post many repetitions of the same message.

Don't understand how to do the proxy setting to configured with computer need phone no. for help Please!

try and open a web pg. that friend sent me it keeps coming up on screen in box says, The Proxy server refusing connections Firefox is configured to use a proxy server that is refusing connections , Check t proxy settings to make sure that , they are correct,Check network to see if proxy server is working
okay so how do I fix this cause really don't understand what this means , Help! to fix as I am missing a lot of information I would like to read .KMH

You can find the connection settings in Tools > Options > Advanced : Network : Connection
If you do not need to use a proxy to connect to internet then select "No Proxy" if the default "Use the system proxy settings" setting doesn't work.
See "Firefox connection settings":
* https://support.mozilla.com/kb/Firefox+cannot+load+websites+but+other+programs+can

Auto debit by Skype that I don't understand how th...

Need help. My credit card has been compromised. Have been charged on my credit card since March 2014. After approaching the my bank, i was asked to cancel my credit card and was replaced with a new card in May. However, in June I was again charged on my new card. I was then told by the bank that it was an auto debit by Skype. I really don't understand how this had happened. How do I get a refund from Skype?
This post was transferred from its previous location on a blog article to create its own new topic here; its subject and/or title has been edited to differentiate the post from other inquiries and to reflect the post's content.

I have asked for your email address to be edited out. Post your address in an open thread is a sure way to be bombarded by unwanted email, remember it will be here long after you have resolved your problem, for automated detection software to find.
If you want people to contact you, enable others to see your email address in your profile.

HT1677 I don't understand all of the jargon but I'm trying to install java to be able to play online games? Plz help

I really don't understand what I need to do to enable Java. Can u walk me through the steps?

Java is not supported/will no run on any iOS device, including the iPod touch.

I don't understand my EtreCheck report. What can I do to improve the speed of my Macbook 2010, which became very slow after upgrading to Yosemite?

I just updated my Macbook (2010) to Yosemite, and it's become very slow. After searching through this community, I downloaded and run EtreCheck, but don't understand what the report means. Please could you help me with what I should do to improve my computer's speed, aside from upgrading my RAM? Thank you so much.
The report:
Problem description:
my macbook is running very slowly after upgrading to yosemite.
EtreCheck version: 2.0.11 (98)
Report generated 12 November 2014 1:44:14 pm SGT
Hardware Information: ℹ️
MacBook (13-inch, Mid 2010) (Verified)
MacBook - model: MacBook7,1
1 2.4 GHz Intel Core 2 Duo CPU: 2-core
2 GB RAM Upgradeable
BANK 0/DIMM0
1 GB DDR3 1067 MHz ok
BANK 1/DIMM0
1 GB DDR3 1067 MHz ok
Bluetooth: Old - Handoff/Airdrop2 not supported
Wireless: en1: 802.11 a/b/g/n
Video Information: ℹ️
NVIDIA GeForce 320M - VRAM: 256 MB
Color LCD 1280 x 800
System Software: ℹ️
OS X 10.10 (14A389) - Uptime: 3:23:3
Disk Information: ℹ️
TOSHIBA MK2555GSXF disk0 : (250.06 GB)
S.M.A.R.T. Status: Verified
EFI (disk0s1) <not mounted> : 210 MB
Macintosh HD (disk0s2) / [Startup]: 249.20 GB (25.42 GB free)
Recovery HD (disk0s3) <not mounted> [Recovery]: 650 MB
HL-DT-ST DVDRW GS23N
USB Information: ℹ️
Western Digital My Passport 0748 1 TB
S.M.A.R.T. Status: Verified
EFI (disk1s1) <not mounted> : 210 MB
tansey (disk1s2) /Volumes/tansey : 999.83 GB (951.98 GB free)
Apple Inc. Built-in iSight
Apple Inc. BRCM2070 Hub
Apple Inc. Bluetooth USB Host Controller
Apple Inc. Apple Internal Keyboard / Trackpad
Configuration files: ℹ️
/etc/hosts - Count: 15
Gatekeeper: ℹ️
Mac App Store and identified developers
Kernel Extensions: ℹ️
/System/Library/Extensions
[not loaded] com.NovatelWireless.driver.NovatelWirelessUSBCDCECMControl (3.0.13) Support
[not loaded] com.NovatelWireless.driver.NovatelWirelessUSBCDCECMData (3.0.13) Support
[not loaded] com.ZTE.driver.ZTEUSBCDCACMData (1.3.8) Support
[not loaded] com.ZTE.driver.ZTEUSBMassStorageFilter (1.3.8) Support
[not loaded] com.novamedia.driver.IceraUSB_MSD_Bypass (1.3.0) Support
[not loaded] com.novatelwireless.driver.3G (3.0.13) Support
[not loaded] com.novatelwireless.driver.DisableAutoInstall (3.0.13) Support
[not loaded] com.option.driver.Option72 (2.15.0) Support
[not loaded] com.option.driver.OptionHS (3.26.0) Support
[not loaded] com.option.driver.OptionMSD (1.21.0) Support
[not loaded] com.option.driver.OptionQC (1.11.0) Support
[not loaded] com.rim.driver.BlackBerryUSBDriverInt (0.0.39) Support
[not loaded] com.rim.driver.BlackBerryUSBDriverVSP (0.0.45) Support
[not loaded] com.vodafone.driver (3.0.9) Support
[not loaded] com.zte.driver.cdc_ecm_qmi (1.0.1) Support
[not loaded] com.zte.driver.cdc_usb_bus (1.0.1) Support
[not loaded] de.novamedia.driver.NMSamsung (0.0.2) Support
[not loaded] de.novamedia.driver.NMSmartplugSCSIDevice (1.0.1) Support
[not loaded] de.novamedia.oem.vodafone.vtp.huawei.cdc (0.0.2) Support
/System/Library/Extensions/NMHuaweiPhonesVTPCDC_106.kext/Contents/PlugIns
[not loaded] de.novamedia.driver.NMUSBCDCACMControl (3.2.12) Support
/System/Library/Extensions/NMSamsungDriver_106.kext/Contents/PlugIns
[not loaded] de.novamedia.driver.NMUSBCDCACMData (3.2.12) Support
/System/Library/Extensions/NovatelWireless3G.kext/Contents/PlugIns
[not loaded] com.novatelwireless.driver.3GData (3.0.13) Support
/System/Library/Extensions/Vodafone.kext/Contents/PlugIns
[not loaded] com.vodafone.driver.Data (3.0.9) Support
Startup Items: ℹ️
HP IO: Path: /Library/StartupItems/HP IO
HWNetMgr: Path: /Library/StartupItems/HWNetMgr
HWPortDetect: Path: /Library/StartupItems/HWPortDetect
Startup items are obsolete and will not work in future versions of OS X
Problem System Launch Agents: ℹ️
[failed] com.apple.accountsd.plist
[failed] com.apple.AirPlayUIAgent.plist
[failed] com.apple.bird.plist
[failed] com.apple.CallHistoryPluginHelper.plist
[failed] com.apple.CallHistorySyncHelper.plist
[failed] com.apple.cloudd.plist
[failed] com.apple.coreservices.appleid.authentication.plist
[failed] com.apple.coreservices.uiagent.plist
[failed] com.apple.EscrowSecurityAlert.plist
[failed] com.apple.icloud.fmfd.plist
[failed] com.apple.iconservices.iconservicesagent.plist
[failed] com.apple.nsurlsessiond.plist
[failed] com.apple.pluginkit.pkd.plist
[failed] com.apple.recentsd.plist
[failed] com.apple.security.cloudkeychainproxy.plist
[failed] com.apple.spindump_agent.plist
[failed] com.apple.telephonyutilities.callservicesd.plist
Problem System Launch Daemons: ℹ️
[failed] com.apple.awdd.plist
[failed] com.apple.cache_delete.plist
[failed] com.apple.coresymbolicationd.plist
[failed] com.apple.ctkd.plist
[failed] com.apple.diagnosticd.plist
[failed] com.apple.iconservices.iconservicesagent.plist
[failed] com.apple.iconservices.iconservicesd.plist
[failed] com.apple.ifdreader.plist
[failed] com.apple.installd.plist
[failed] com.apple.MobileFileIntegrity.plist
[failed] com.apple.nehelper.plist
[failed] com.apple.nsurlsessiond.plist
[failed] com.apple.sandboxd.plist
[failed] com.apple.softwareupdated.plist
[failed] com.apple.spindump.plist
[failed] com.apple.sysmond.plist
[failed] com.apple.tccd.system.plist
[failed] com.apple.wdhelper.plist
[failed] com.apple.xpc.smd.plist
[running] de.novamedia.nmnetmgrd.plist Support
Launch Agents: ℹ️
[not loaded] com.adobe.AAM.Updater-1.0.plist Support
[failed] com.adobe.CS5ServiceManager.plist Support
[loaded] com.google.keystone.agent.plist Support
[running] de.novamedia.VodafoneDeviceObserver.plist Support
[invalid?] SwapperUFi.plist Support
Launch Daemons: ℹ️
[loaded] com.adobe.fpsaud.plist Support
[invalid?] com.adobe.SwitchBoard.plist Support
[loaded] com.cloudpath.maccmd.plist Support
[loaded] com.google.keystone.daemon.plist Support
[loaded] com.microsoft.office.licensing.helper.plist Support
[invalid?] PPPMonitord.plist Support
User Launch Agents: ℹ️
[loaded] com.adobe.ARM.[...].plist Support
[invalid?] com.akamai.client.plist Support
[invalid?] com.divx.agent.postinstall.plist Support
[failed] com.facebook.videochat.[redacted].plist Support
User Login Items: ℹ️
Dropbox Application (/Applications/Dropbox.app)
SurplusMeterAgent UNKNOWN (missing value)
Google Chrome ApplicationHidden (/Applications/Google Chrome.app)
HP Scheduler Application (/Library/Application Support/Hewlett-Packard/Software Update/HP Scheduler.app)
Internet Plug-ins: ℹ️
o1dbrowserplugin: Version: 5.38.6.0 - SDK 10.8 Support
Google Earth Web Plug-in: Version: 7.1 Support
Default Browser: Version: 600 - SDK 10.10
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I advise to reply to the one you want to reply to.
You have had good information here. I will not repeat that here.
I would like to add:
you have incompatible software: start in SafeMode, read Woodmeister and see if it is free of issues.
Akamai is crap software needed or not, Huawei the same.
It is very possible that the keygenerator you used for generating a key for some softwares has infected your mac.
The non-regular software with the false key(s) are not compatible probably or generate malware. Luckily you can not update them automatically because the keygenerator blocked the software for contacting the developer... I propose to consider getting rid of those softwares by really good uninstalling.
You have a beautiful mac, don't degenerate it with crapped software. There are alternatives for expensive software, for example Adobe Photoshop has a free alternative (with a less beautiful interface) in GIMP. And so on.
Lex

Why is this an error??? I don't understand why it is... Help Please

Hi,
Ok, I'll preface this by saying there's a lotta code pasted in here but it really quite an easy question, I just need to post all the code so you understand where what came from.
Now.............the question I'm trying to do is to create an applet that has 2 buttons -- each button when clicked opens an application (one is a simple calculator, the other a Mortgage calculation app). When you click one of the buttons (calc or mortgage), that app opens infront of the 2 button menu so its in "focus". The button on the 2 button menu then switches to a "hide app X" button (ie: "Mortgage", changes to "Hide Mortgage"). Thus if you click the hide button, the app that was opened is hidden, and then that "hide" button switches back to the original "app X" button. Pretty simple.
Now, I have from my text book an example that does exactly this, with the simple calculator already in it, and with another app (a traffic light thing) where the Mortgage should be in my final product. I also already have the Mortgage applet I need to insert from another book example in place of that Traffic Light portion.
Now, common sense would dictate that I should be able to just copy my code for the Mortgage applet into the example that has the 2 button menu structure, and overwrite the code I want to get rid of (the traffic light) with the mortgage code & rename the menu buttons. Right?? A simple switch of one thing for another... but therein lies my problem.
I copied all the Mortgage code in correctly over the traffic lights, switched the button names, tried to compile it but I get one error....
Exercise12_17.java:52: cannot resolve symbol
symbol : method pack ()
location: class MortgageApplet
        mortgageAppletFrame.pack();I don't understand why..... mortgageAppletFrame.pack(); was a simple rewrite from lightsFrame.pack(); like every other line...... it should work. I've gone over it for 2 days......... Anyone know why it comes up as an error???
Below, in order going down is (1)my code with the 1 error I can't solve, (2)the original menu example I tried to edit, and (3)the Mortgage app code...........
Does anyone know what my error is?? Help or a hint would be greatly appreciated........ Thanks.
My erroring app.......
// Exercise12_17.java: Create multiple windows
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.border.TitledBorder;
public class Exercise12_17 extends JFrame implements ActionListener {
// Declare and create a frame: an instance of MenuDemo
MenuDemo calcFrame = new MenuDemo();
// Declare and create a frame: an instance of RadioButtonDemo
MortgageApplet mortgageAppletFrame = new MortgageApplet();
// Declare two buttons for displaying frames
private JButton jbtCalc;
private JButton jbtMortgage;
public static void main(String[] args) {
    Exercise12_17 frame = new Exercise12_17();
    frame.setSize( 400, 70 );
    frame.setTitle("Exercise 11.8: Multiple Windows Demo");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    frame.setVisible(true);
public Exercise12_17() {
    // Add buttons to the main frame
    getContentPane().setLayout(new FlowLayout());
    getContentPane().add(jbtCalc = new JButton("Simple Calculator"));
     getContentPane().add(jbtMortgage = new JButton("Mortgage"));
    // Register the main frame as listener for the buttons
    jbtCalc.addActionListener(this);
     jbtMortgage.addActionListener(this);
public void actionPerformed(ActionEvent e) {
    String arg = e.getActionCommand();
    if (e.getSource() instanceof JButton)
      if ("Simple Calculator".equals(arg)) {
        //show the MenuDemo frame
        jbtCalc.setText("Hide Simple Calculator");
        calcFrame.pack();
        calcFrame.setVisible(true);
      else if ("Hide Simple Calculator".equals(arg)) {
        calcFrame.setVisible(false);
        jbtCalc.setText("Simple Calculator");
      else if ("Mortgage".equals(arg)) {
        //show the CheckboxGroup frame
        mortgageAppletFrame.pack();
        jbtMortgage.setText("Hide Mortgage");
        mortgageAppletFrame.setVisible(true);
      else if ("Hide Mortgage".equals(arg)) {
        mortgageAppletFrame.setVisible(false);
        jbtMortgage.setText("Mortgage");
class MortgageApplet extends JApplet
implements ActionListener {
// Declare and create text fields for interest rate
// year, loan amount, monthly payment, and total payment
private JTextField jtfAnnualInterestRate = new JTextField();
private JTextField jtfNumOfYears = new JTextField();
private JTextField jtfLoanAmount = new JTextField();
private JTextField jtfMonthlyPayment = new JTextField();
private JTextField jtfTotalPayment = new JTextField();
// Declare and create a Compute Mortgage button
private JButton jbtComputeMortgage = new JButton("Compute Mortgage");
/** Initialize user interface */
public void init() {
    // Set properties on the text fields
    jtfMonthlyPayment.setEditable(false);
    jtfTotalPayment.setEditable(false);
    // Right align text fields
    jtfAnnualInterestRate.setHorizontalAlignment(JTextField.RIGHT);
    jtfNumOfYears.setHorizontalAlignment(JTextField.RIGHT);
    jtfLoanAmount.setHorizontalAlignment(JTextField.RIGHT);
    jtfMonthlyPayment.setHorizontalAlignment(JTextField.RIGHT);
    jtfTotalPayment.setHorizontalAlignment(JTextField.RIGHT);
    // Panel p1 to hold labels and text fields
    JPanel p1 = new JPanel();
    p1.setLayout(new GridLayout(5, 2));
    p1.add(new Label("Annual Interest Rate"));
    p1.add(jtfAnnualInterestRate);
    p1.add(new Label("Number of Years"));
    p1.add(jtfNumOfYears);
    p1.add(new Label("Loan Amount"));
    p1.add(jtfLoanAmount);
    p1.add(new Label("Monthly Payment"));
    p1.add(jtfMonthlyPayment);
    p1.add(new Label("Total Payment"));
    p1.add(jtfTotalPayment);
    p1.setBorder(new
      TitledBorder("Enter interest rate, year and loan amount"));
    // Panel p2 to hold the button
    JPanel p2 = new JPanel();
    p2.setLayout(new FlowLayout(FlowLayout.RIGHT));
    p2.add(jbtComputeMortgage);
    // Add the components to the applet
    getContentPane().add(p1, BorderLayout.CENTER);
    getContentPane().add(p2, BorderLayout.SOUTH);
    // Register listener
    jbtComputeMortgage.addActionListener(this);
/** Handle the "Compute Mortgage" button */
public void actionPerformed(ActionEvent e) {
    if (e.getSource() == jbtComputeMortgage) {
      // Get values from text fields
      double interest = (Double.valueOf(
        jtfAnnualInterestRate.getText())).doubleValue();
      int year =
        (Integer.valueOf(jtfNumOfYears.getText())).intValue();
      double loan =
        (Double.valueOf(jtfLoanAmount.getText())).doubleValue();
      // Create a mortgage object
      Mortgage m = new Mortgage(interest, year, loan);
      // Display monthly payment and total payment
      jtfMonthlyPayment.setText(String.valueOf(m.monthlyPayment()));
      jtfTotalPayment.setText(String.valueOf(m.totalPayment()));
class MenuDemo extends JFrame implements ActionListener {
// Text fields for Number 1, Number 2, and Result
private JTextField jtfNum1, jtfNum2, jtfResult;
// Buttons "Add", "Subtract", "Multiply" and "Divide"
private JButton jbtAdd, jbtSub, jbtMul, jbtDiv;
// Menu items "Add", "Subtract", "Multiply","Divide" and "Close"
private JMenuItem jmiAdd, jmiSub, jmiMul, jmiDiv, jmiClose;
/** Main method */
public static void main(String[] args) {
    MenuDemo frame = new MenuDemo();
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    frame.pack();
    frame.setVisible(true);
/** Default constructor */
public MenuDemo() {
    setTitle("Menu Demo");
    // Create menu bar
    JMenuBar jmb = new JMenuBar();
    // Set menu bar to the frame
    setJMenuBar(jmb);
    // Add menu "Operation" to menu bar
    JMenu operationMenu = new JMenu("Operation");
    operationMenu.setMnemonic('O');
    jmb.add(operationMenu);
    // Add menu "Exit" in menu bar
    JMenu exitMenu = new JMenu("Exit");
    exitMenu.setMnemonic('E');
    jmb.add(exitMenu);
    // Add menu items with mnemonics to menu "Operation"
    operationMenu.add(jmiAdd= new JMenuItem("Add", 'A'));
    operationMenu.add(jmiSub = new JMenuItem("Subtract", 'S'));
    operationMenu.add(jmiMul = new JMenuItem("Multiply", 'M'));
    operationMenu.add(jmiDiv = new JMenuItem("Divide", 'D'));
    exitMenu.add(jmiClose = new JMenuItem("Close", 'C'));
    // Set keyboard accelerators
    jmiAdd.setAccelerator(
      KeyStroke.getKeyStroke(KeyEvent.VK_A, ActionEvent.CTRL_MASK));
    jmiSub.setAccelerator(
      KeyStroke.getKeyStroke(KeyEvent.VK_S, ActionEvent.CTRL_MASK));
    jmiMul.setAccelerator(
      KeyStroke.getKeyStroke(KeyEvent.VK_M, ActionEvent.CTRL_MASK));
    jmiDiv.setAccelerator(
      KeyStroke.getKeyStroke(KeyEvent.VK_D, ActionEvent.CTRL_MASK));
    // Panel p1 to hold text fields and labels
    JPanel p1 = new JPanel();
    p1.setLayout(new FlowLayout());
    p1.add(new JLabel("Number 1"));
    p1.add(jtfNum1 = new JTextField(3));
    p1.add(new JLabel("Number 2"));
    p1.add(jtfNum2 = new JTextField(3));
    p1.add(new JLabel("Result"));
    p1.add(jtfResult = new JTextField(4));
    jtfResult.setEditable(false);
    // Panel p2 to hold buttons
    JPanel p2 = new JPanel();
    p2.setLayout(new FlowLayout());
    p2.add(jbtAdd = new JButton("Add"));
    p2.add(jbtSub = new JButton("Subtract"));
    p2.add(jbtMul = new JButton("Multiply"));
    p2.add(jbtDiv = new JButton("Divide"));
    // Add panels to the frame
    getContentPane().setLayout(new BorderLayout());
    getContentPane().add(p1, BorderLayout.CENTER);
    getContentPane().add(p2, BorderLayout.SOUTH);
    // Register listeners
    jbtAdd.addActionListener(this);
    jbtSub.addActionListener(this);
    jbtMul.addActionListener(this);
    jbtDiv.addActionListener(this);
    jmiAdd.addActionListener(this);
    jmiSub.addActionListener(this);
    jmiMul.addActionListener(this);
    jmiDiv.addActionListener(this);
    jmiClose.addActionListener(this);
/** Handle ActionEvent from buttons and menu items */
public void actionPerformed(ActionEvent e) {
    String actionCommand = e.getActionCommand();
    // Handle button events
    if (e.getSource() instanceof JButton) {
      if ("Add".equals(actionCommand))
        calculate('+');
      else if ("Subtract".equals(actionCommand))
        calculate('-');
      else if ("Multiply".equals(actionCommand))
        calculate('*');
      else if ("Divide".equals(actionCommand))
        calculate('/');
    else if (e.getSource() instanceof JMenuItem) {
      // Handle menu item events
      if ("Add".equals(actionCommand))
        calculate('+');
      else if ("Subtract".equals(actionCommand))
        calculate('-');
      else if ("Multiply".equals(actionCommand))
        calculate('*');
      else if ("Divide".equals(actionCommand))
        calculate('/');
      else if ("Close".equals(actionCommand))
        System.exit(0);
/** Calculate and show the result in jtfResult */
private void calculate(char operator) {
    // Obtain Number 1 and Number 2
    int num1 = (Integer.parseInt(jtfNum1.getText().trim()));
    int num2 = (Integer.parseInt(jtfNum2.getText().trim()));
    int result = 0;
    // Perform selected operation
    switch (operator) {
      case '+': result = num1 + num2;
                break;
      case '-': result = num1 - num2;
                break;
      case '*': result = num1 * num2;
                break;
      case '/': result = num1 / num2;
    // Set result in jtfResult
    jtfResult.setText(String.valueOf(result));
Original 2 button menu example....
// Exercise11_8.java: Create multiple windows
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class Exercise11_8 extends JFrame implements ActionListener {
// Declare and create a frame: an instance of MenuDemo
MenuDemo calcFrame = new MenuDemo();
// Declare and create a frame: an instance of RadioButtonDemo
RadioButtonDemo lightsFrame = new RadioButtonDemo();
// Declare two buttons for displaying frames
private JButton jbtCalc;
private JButton jbtLights;
public static void main(String[] args) {
    Exercise11_8 frame = new Exercise11_8();
    frame.setSize( 400, 70 );
    frame.setTitle("Exercise 11.8: Multiple Windows Demo");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    frame.setVisible(true);
public Exercise11_8() {
    // Add buttons to the main frame
    getContentPane().setLayout(new FlowLayout());
    getContentPane().add(jbtCalc = new JButton("Simple Calculator"));
    getContentPane().add(jbtLights = new JButton("Traffic Lights"));
    // Register the main frame as listener for the buttons
    jbtCalc.addActionListener(this);
    jbtLights.addActionListener(this);
public void actionPerformed(ActionEvent e) {
    String arg = e.getActionCommand();
    if (e.getSource() instanceof JButton)
      if ("Simple Calculator".equals(arg)) {
        //show the MenuDemo frame
        jbtCalc.setText("Hide Simple Calculator");
        calcFrame.pack();
        calcFrame.setVisible(true);
      else if ("Hide Simple Calculator".equals(arg)) {
        calcFrame.setVisible(false);
        jbtCalc.setText("Simple Calculator");
      else if ("Traffic Lights".equals(arg)) {
        //show the CheckboxGroup frame
        lightsFrame.pack();
        jbtLights.setText("Hide Traffic Lights");
        lightsFrame.setVisible(true);
      else if ("Hide Traffic Lights".equals(arg)) {
        lightsFrame.setVisible(false);
        jbtLights.setText("Traffic Lights");
     class RadioButtonDemo extends JFrame
implements ItemListener {
// Declare radio buttons
private JRadioButton jrbRed, jrbYellow, jrbGreen;
// Declare a radio button group
private ButtonGroup btg = new ButtonGroup();
// Declare a traffic light display panel
private Light light;
/** Main method */
public static void main(String[] args) {
    RadioButtonDemo frame = new RadioButtonDemo();
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    frame.setSize(250, 170);
    frame.setVisible(true);
/** Default constructor */
public RadioButtonDemo() {
    setTitle("RadioButton Demo");
    // Add traffic light panel to panel p1
    JPanel p1 = new JPanel();
    p1.setSize(200, 200);
    p1.setLayout(new FlowLayout(FlowLayout.CENTER));
    light = new Light();
    light.setSize(40, 90);
    p1.add(light);
    // Put the radio button in Panel p2
    JPanel p2 = new JPanel();
    p2.setLayout(new FlowLayout());
    p2.add(jrbRed = new JRadioButton("Red", true));
    p2.add(jrbYellow = new JRadioButton("Yellow", false));
    p2.add(jrbGreen = new JRadioButton("Green", false));
    // Set keyboard mnemonics
    jrbRed.setMnemonic('R');
    jrbYellow.setMnemonic('Y');
    jrbGreen.setMnemonic('G');
    // Group radio buttons
    btg.add(jrbRed);
    btg.add(jrbYellow);
    btg.add(jrbGreen);
    // Place p1 and p2 in the frame
    getContentPane().setLayout(new BorderLayout());
    getContentPane().add(p1, BorderLayout.CENTER);
    getContentPane().add(p2, BorderLayout.SOUTH);
    // Register listeners for check boxes
    jrbRed.addItemListener(this);
    jrbYellow.addItemListener(this);
    jrbGreen.addItemListener(this);
/** Handle checkbox events */
public void itemStateChanged(ItemEvent e) {
    if (jrbRed.isSelected())
      light.turnOnRed(); // Set red light
    if (jrbYellow.isSelected())
      light.turnOnYellow(); // Set yellow light
    if (jrbGreen.isSelected())
      light.turnOnGreen(); // Set green light
// Three traffic lights shown in a panel
class Light extends JPanel {
private boolean red;
private boolean yellow;
private boolean green;
/** Default constructor */
public Light() {
    turnOnGreen();
/** Set red light on */
public void turnOnRed() {
    red = true;
    yellow = false;
    green = false;
    repaint();
/** Set yellow light on */
public void turnOnYellow() {
    red = false;
    yellow = true;
    green = false;
    repaint();
/** Set green light on */
public void turnOnGreen() {
    red = false;
    yellow = false;
    green = true;
    repaint();
/** Display lights */
public void paintComponent(Graphics g) {
    super.paintComponent(g);
    if (red) {
      g.setColor(Color.red);
      g.fillOval(10, 10, 20, 20);
      g.setColor(Color.black);
      g.drawOval(10, 35, 20, 20);
      g.drawOval(10, 60, 20, 20);
      g.drawRect(5, 5, 30, 80);
    else if (yellow) {
      g.setColor(Color.yellow);
      g.fillOval(10, 35, 20, 20);
      g.setColor(Color.black);
      g.drawRect(5, 5, 30, 80);
      g.drawOval(10, 10, 20, 20);
      g.drawOval(10, 60, 20, 20);
    else if (green) {
      g.setColor(Color.green);
      g.fillOval(10, 60, 20, 20);
      g.setColor(Color.black);
      g.drawRect(5, 5, 30, 80);
      g.drawOval(10, 10, 20, 20);
      g.drawOval(10, 35, 20, 20);
    else {
      g.setColor(Color.black);
      g.drawRect(5, 5, 30, 80);
      g.drawOval(10, 10, 20, 20);
      g.drawOval(10, 35, 20, 20);
      g.drawOval(10, 60, 20, 20);
/** Set preferred size */
public Dimension getPreferredSize() {
    return new Dimension(40, 90);
class MenuDemo extends JFrame implements ActionListener {
// Text fields for Number 1, Number 2, and Result
private JTextField jtfNum1, jtfNum2, jtfResult;
// Buttons "Add", "Subtract", "Multiply" and "Divide"
private JButton jbtAdd, jbtSub, jbtMul, jbtDiv;
// Menu items "Add", "Subtract", "Multiply","Divide" and "Close"
private JMenuItem jmiAdd, jmiSub, jmiMul, jmiDiv, jmiClose;
/** Main method */
public static void main(String[] args) {
    MenuDemo frame = new MenuDemo();
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    frame.pack();
    frame.setVisible(true);
/** Default constructor */
public MenuDemo() {
    setTitle("Menu Demo");
    // Create menu bar
    JMenuBar jmb = new JMenuBar();
    // Set menu bar to the frame
    setJMenuBar(jmb);
    // Add menu "Operation" to menu bar
    JMenu operationMenu = new JMenu("Operation");
    operationMenu.setMnemonic('O');
    jmb.add(operationMenu);
    // Add menu "Exit" in menu bar
    JMenu exitMenu = new JMenu("Exit");
    exitMenu.setMnemonic('E');
    jmb.add(exitMenu);
    // Add menu items with mnemonics to menu "Operation"
    operationMenu.add(jmiAdd= new JMenuItem("Add", 'A'));
    operationMenu.add(jmiSub = new JMenuItem("Subtract", 'S'));
    operationMenu.add(jmiMul = new JMenuItem("Multiply", 'M'));
    operationMenu.add(jmiDiv = new JMenuItem("Divide", 'D'));
    exitMenu.add(jmiClose = new JMenuItem("Close", 'C'));
    // Set keyboard accelerators
    jmiAdd.setAccelerator(
      KeyStroke.getKeyStroke(KeyEvent.VK_A, ActionEvent.CTRL_MASK));
    jmiSub.setAccelerator(
      KeyStroke.getKeyStroke(KeyEvent.VK_S, ActionEvent.CTRL_MASK));
    jmiMul.setAccelerator(
      KeyStroke.getKeyStroke(KeyEvent.VK_M, ActionEvent.CTRL_MASK));
    jmiDiv.setAccelerator(
      KeyStroke.getKeyStroke(KeyEvent.VK_D, ActionEvent.CTRL_MASK));
    // Panel p1 to hold text fields and labels
    JPanel p1 = new JPanel();
    p1.setLayout(new FlowLayout());
    p1.add(new JLabel("Number 1"));
    p1.add(jtfNum1 = new JTextField(3));
    p1.add(new JLabel("Number 2"));
    p1.add(jtfNum2 = new JTextField(3));
    p1.add(new JLabel("Result"));
    p1.add(jtfResult = new JTextField(4));
    jtfResult.setEditable(false);
    // Panel p2 to hold buttons
    JPanel p2 = new JPanel();
    p2.setLayout(new FlowLayout());
    p2.add(jbtAdd = new JButton("Add"));
    p2.add(jbtSub = new JButton("Subtract"));
    p2.add(jbtMul = new JButton("Multiply"));
    p2.add(jbtDiv = new JButton("Divide"));
    // Add panels to the frame
    getContentPane().setLayout(new BorderLayout());
    getContentPane().add(p1, BorderLayout.CENTER);
    getContentPane().add(p2, BorderLayout.SOUTH);
    // Register listeners
    jbtAdd.addActionListener(this);
    jbtSub.addActionListener(this);
    jbtMul.addActionListener(this);
    jbtDiv.addActionListener(this);
    jmiAdd.addActionListener(this);
    jmiSub.addActionListener(this);
    jmiMul.addActionListener(this);
    jmiDiv.addActionListener(this);
    jmiClose.addActionListener(this);
/** Handle ActionEvent from buttons and menu items */
public void actionPerformed(ActionEvent e) {
    String actionCommand = e.getActionCommand();
    // Handle button events
    if (e.getSource() instanceof JButton) {
      if ("Add".equals(actionCommand))
        calculate('+');
      else if ("Subtract".equals(actionCommand))
        calculate('-');
      else if ("Multiply".equals(actionCommand))
        calculate('*');
      else if ("Divide".equals(actionCommand))
        calculate('/');
    else if (e.getSource() instanceof JMenuItem) {
      // Handle menu item events
      if ("Add".equals(actionCommand))
        calculate('+');
      else if ("Subtract".equals(actionCommand))
        calculate('-');
      else if ("Multiply".equals(actionCommand))
        calculate('*');
      else if ("Divide".equals(actionCommand))
        calculate('/');
      else if ("Close".equals(actionCommand))
        System.exit(0);
/** Calculate and show the result in jtfResult */
private void calculate(char operator) {
    // Obtain Number 1 and Number 2
    int num1 = (Integer.parseInt(jtfNum1.getText().trim()));
    int num2 = (Integer.parseInt(jtfNum2.getText().trim()));
    int result = 0;
    // Perform selected operation
    switch (operator) {
      case '+': result = num1 + num2;
                break;
      case '-': result = num1 - num2;
                break;
      case '*': result = num1 * num2;
                break;
      case '/': result = num1 / num2;
    // Set result in jtfResult
    jtfResult.setText(String.valueOf(result));
Mortgage applet code....
// MortgageApplet.java: Applet for computing mortgage payments
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.border.TitledBorder;
public class MortgageApplet extends JApplet
implements ActionListener {
// Declare and create text fields for interest rate
// year, loan amount, monthly payment, and total payment
private JTextField jtfAnnualInterestRate = new JTextField();
private JTextField jtfNumOfYears = new JTextField();
private JTextField jtfLoanAmount = new JTextField();
private JTextField jtfMonthlyPayment = new JTextField();
private JTextField jtfTotalPayment = new JTextField();
// Declare and create a Compute Mortgage button
private JButton jbtComputeMortgage = new JButton("Compute Mortgage");
/** Initialize user interface */
public void init() {
    // Set properties on the text fields
    jtfMonthlyPayment.setEditable(false);
    jtfTotalPayment.setEditable(false);
    // Right align text fields
    jtfAnnualInterestRate.setHorizontalAlignment(JTextField.RIGHT);
    jtfNumOfYears.setHorizontalAlignment(JTextField.RIGHT);
    jtfLoanAmount.setHorizontalAlignment(JTextField.RIGHT);
    jtfMonthlyPayment.setHorizontalAlignment(JTextField.RIGHT);
    jtfTotalPayment.setHorizontalAlignment(JTextField.RIGHT);
    // Panel p1 to hold labels and text fields
    JPanel p1 = new JPanel();
    p1.setLayout(new GridLayout(5, 2));
    p1.add(new Label("Annual Interest Rate"));
    p1.add(jtfAnnualInterestRate);
    p1.add(new Label("Number of Years"));
    p1.add(jtfNumOfYears);
    p1.add(new Label("Loan Amount"));
    p1.add(jtfLoanAmount);
    p1.add(new Label("Monthly Payment"));
    p1.add(jtfMonthlyPayment);
    p1.add(new Label("Total Payment"));
    p1.add(jtfTotalPayment);
    p1.setBorder(new
      TitledBorder("Enter interest rate, year and loan amount"));
    // Panel p2 to hold the button
    JPanel p2 = new JPanel();
    p2.setLayout(new FlowLayout(FlowLayout.RIGHT));
    p2.add(jbtComputeMortgage);
    // Add the components to the applet
    getContentPane().add(p1, BorderLayout.CENTER);
    getContentPane().add(p2, BorderLayout.SOUTH);
    // Register listener
    jbtComputeMortgage.addActionListener(this);
/** Handle the "Compute Mortgage" button */
public void actionPerformed(ActionEvent e) {
    if (e.getSource() == jbtComputeMortgage) {
      // Get values from text fields
      double interest = (Double.valueOf(
        jtfAnnualInterestRate.getText())).doubleValue();
      int year =
        (Integer.valueOf(jtfNumOfYears.getText())).intValue();
      double loan =
        (Double.valueOf(jtfLoanAmount.getText())).doubleValue();
      // Create a mortgage object
      Mortgage m = new Mortgage(interest, year, loan);
      // Display monthly payment and total payment
      jtfMonthlyPayment.setText(String.valueOf(m.monthlyPayment()));
      jtfTotalPayment.setText(String.valueOf(m.totalPayment()));
}

Does it have to be an applet?
If you want the same behaviour as in the code with traffic lights, change
class MortgageApplet extends JApplet implements ActionListener {
to
class MortgageApplet extends JFrame implements ActionListener {
and change
public void init() {
to
public MortgageApplet() {

I really don't understand

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