Need to declare GUID in Class to use in Workfloq

Hi Guys!
I created a new class (via SE24) with two attributes as its key - but its lenght exceeded 32 charaters. I went thru the blogs posted by Jocelyn where she mentions to use GUID to declare the key. Can someone please explain how do the go about this - using a GUID as the key for the class? I am unable to understand how will I establish the link between the GUID and two attributes.
Any guidance would be appreciated.
Regards,
Anwar.

hi saujanya!
thanks a lot for looking into this.
i have a few concerns here. first, let me paste the information that i read on one of the blogs on SDN on how to use GUID as Key field.
What happens if the class represents something that has a unique key longer than 32 characters? In this case you would use a Globally Unique Id (GUID) to represent your unique key, and then relate the GUID back to the real key. A GUID is unique throughout your system - for this reason a lot of the latest SAP solutions use GUIDs rather than meaningful ids as technical ids. To create the GUID, you simply call function module GUID_CREATE. To relate the GUID back to the real key, you could either cross-reference the GUID in a separate custom table, or use an append structure to extend an existing table to also hold a GUID reference
Here are my questions:
1. The field INSTID that contains the Key can only be of lenght 32 characters. So if I declare the key to be longer than 32 characters, SAP gives me a warning - but is that ok?
2. from the workflow side, i have only two values with me - objtype and objvalue - this is what i want to pass to my class. But i cannot use objtype and objvalue as my key because they are longer than 32 characters. therefore i need to use a guid. i have maintained a table, where i can find the guid using the objtype and objvalue. but my concern is what should i pass from the workflow and how do i get that in the class? this is were I am really confused.
Appreciate your time for lookinginto this. any guidance would be greatly appreciated.
regards,
anwar.

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What on earth are you talking about? Once the app. is on-screen, the end user would not be able to distinguish between
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2) A Jar launched using webstart.
3) Loose class files.
Your fixation on .bat files sounds much like the adage that 'If the only tool you have is a hammer, every job starts to look like a nail'.
Get over them, will you? +Using .bat files is not a practical way to provide a Java app. to the end user+ (and launching an app. from a .bat looks quite crappy and 'second hand' to +this+ user).
Edit 1:
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Edited by: AndrewThompson64 on May 19, 2009 12:06 PM

Need to create a driver class for a program i have made...

hey guys im new to these forums and someone told me that i could get help on here if i get in a bind...my problem is that i need help creating a driver class for a program that i have created and i dont know what to do. i need to know how to do this is because my professor told us after i was 2/3 done my project that we need at least 2 class files for our project, so i need at least 2 class files for it to run... my program is as follows:
p.s might be kinda messy, might need to put it into a text editor
Cipher.java
This program encodes and decodes text strings using a cipher that
can be specified by the user.
import java.io.*;
public class Cipher
public static void printID()
// output program ID
System.out.println ("*********************");
System.out.println ("* Cipher *");
System.out.println ("* *");
System.out.println ("* *");
System.out.println ("* *");
System.out.println ("* CS 181-03 *");
System.out.println ("*********************");
public static void printMenu()
// output menu
System.out.println("\n\n****************************" +
"\n* 1. Set cipher code. *" +
"\n* 2. Encode text. *" +
"\n* 3. Decode coded text. *" +
"\n* 4. Exit the program *" +
"\n****************************");
public static String getText(BufferedReader input, String prompt)
throws IOException
// prompt the user and get their response
System.out.print(prompt);
return input.readLine();
public static int getInteger(BufferedReader input, String prompt)
throws IOException
// prompt and get response from user
String text = getText(input, prompt);
// convert it to an integer
return (new Integer(text).intValue());
public static String encode(String original, int offset)
// declare constants
final int ALPHABET_SIZE = 26; // used to wrap around A-Z
String encoded = ""; // base for string to return
char letter; // letter being processed
// convert message to upper case
original = original.toUpperCase();
// process each character of the message
for (int index = 0; index < original.length(); index++)
// get the letter and determine whether or not to
// add the cipher value
letter = original.charAt(index);
if (letter >='A' && letter <= 'Z')
// is A-Z, so add offset
// determine whether result will be out of A-Z range
if ((letter + offset) > 'Z') // need to wrap around to 'A'
letter = (char)(letter - ALPHABET_SIZE + offset);
else
if ((letter + offset) < 'A') // need to wrap around to 'Z'
letter = (char)(letter + ALPHABET_SIZE + offset);
else
letter = (char) (letter + offset);
// build encoded message string
encoded = encoded + letter;
return encoded;
public static String decode(String original, int offset)
// declare constants
final int ALPHABET_SIZE = 26; // used to wrap around A-Z
String decoded = ""; // base for string to return
char letter; // letter being processed
// make original message upper case
original = original.toUpperCase();
// process each letter of message
for (int index = 0; index < original.length(); index++)
// get letter and determine whether to subtract cipher value
letter = original.charAt(index);
if (letter >= 'A' && letter <= 'Z')
// is A-Z, so subtract cipher value
// determine whether result will be out of A-Z range
if ((letter - offset) < 'A') // wrap around to 'Z'
letter = (char)(letter + ALPHABET_SIZE - offset);
else
if ((letter - offset) > 'Z') // wrap around to 'A'
letter = (char)(letter - ALPHABET_SIZE - offset);
else
letter = (char) (letter - offset);
// build decoded message
decoded = decoded + letter;
return decoded;
// main controls flow throughout the program, presenting a
// menu of options the user.
public static void main (String[] args) throws IOException
// declare constants
final String PROMPT_CHOICE = "Enter your choice: ";
final String PROMPT_VALID = "\nYou must enter a number between 1" +
" and 4 to indicate your selection.\n";
final String PROMPT_CIPHER = "\nEnter the offset value for a caesar " +
"cipher: ";
final String PROMPT_ENCODE = "\nEnter the text to encode: ";
final String PROMPT_DECODE = "\nEnter the text to decode: ";
final String SET_STR = "1"; // selection of 1 at main menu
final String ENCODE_STR = "2"; // selection of 2 at main menu
final String DECODE_STR = "3"; // selection of 3 at main menu
final String EXIT_STR = "4"; // selection of 4 at main menu
final int SET = 1; // menu choice 1
final int ENCODE = 2; // menu choice 2
final int DECODE =3; // menu choice 4
final int EXIT = 4; // menu choice 3
final int ALPHABET_SIZE = 26; // number of elements in alphabet
// declare variables
boolean finished = false; // whether or not to exit program
String text; // input string read from keyboard
int choice; // menu choice selected
int offset = 0; // caesar cipher offset
// declare and instantiate input objects
InputStreamReader reader = new InputStreamReader(System.in);
BufferedReader input = new BufferedReader(reader);
// Display program identification
printID();
// until the user selects the exit option, display the menu
// and respond to the choice
do
// Display menu of options
printMenu();
// Prompt user for an option and read input
text = getText(input, PROMPT_CHOICE);
// While selection is not valid, prompt for correct info
while (!text.equals(SET_STR) && !text.equals(ENCODE_STR) &&
!text.equals(EXIT_STR) && !text.equals(DECODE_STR))
text = getText(input, PROMPT_VALID + PROMPT_CHOICE);
// convert choice to an integer
choice = new Integer(text).intValue();
// respond to the choice selected
switch(choice)
case SET:
     // get the cipher value from the user and constrain to
// -25..0..25
offset = getInteger(input, PROMPT_CIPHER);
offset %= ALPHABET_SIZE;
break;
case ENCODE:
// get message to encode from user, and encode it using
// the current cipher value
text = getText(input, PROMPT_ENCODE);
text = encode(text, offset);
System.out.println("Encoded text is: " + text);
break;
case DECODE:
// get message to decode from user, and decode it using
// the current cipher value
text = getText(input, PROMPT_DECODE);
text = decode(text, offset);
System.out.println("Decoded text is: " + text);
break;
case EXIT:
// set exit flag to true
finished = true ;
break;
} // end of switch on choice
} while (!finished); // end of outer do loop
// Thank user
System.out.println("Thank you for using Cipher for all your" +
" code breaking and code making needs.");
}

My source in code format...sorry guys :)
   Cipher.java
   This program encodes and decodes text strings using a cipher that
   can be specified by the user.
import java.io.*;
public class Cipher
   public static void printID()
      // output program ID
      System.out.println ("*********************");
      System.out.println ("*       Cipher      *");
      System.out.println ("*                   *");
      System.out.println ("*                          *");
      System.out.println ("*                   *");
      System.out.println ("*     CS 181-03     *");
      System.out.println ("*********************");
   public static void printMenu()
      // output menu
      System.out.println("\n\n****************************" +
                           "\n*   1. Set cipher code.    *" +
                           "\n*   2. Encode text.        *" +
                           "\n*   3. Decode coded text. *" +
                           "\n*   4. Exit the program    *" +
                           "\n****************************");
   public static String getText(BufferedReader input, String prompt)
                                       throws IOException
      // prompt the user and get their response
      System.out.print(prompt);
      return input.readLine();
   public static int getInteger(BufferedReader input, String prompt)
                                       throws IOException
      // prompt and get response from user
      String text = getText(input, prompt);
      // convert it to an integer
      return (new Integer(text).intValue());
   public static String encode(String original, int offset)
      // declare constants
      final int ALPHABET_SIZE = 26; // used to wrap around A-Z
      String encoded = "";           // base for string to return
      char letter;                   // letter being processed
      // convert message to upper case
      original = original.toUpperCase();
      // process each character of the message
      for (int index = 0; index < original.length(); index++)
         // get the letter and determine whether or not to
         // add the cipher value
         letter = original.charAt(index);
         if (letter >='A' && letter <= 'Z')
            // is A-Z, so add offset
            // determine whether result will be out of A-Z range
            if ((letter + offset) > 'Z') // need to wrap around to 'A'
               letter = (char)(letter - ALPHABET_SIZE + offset);
            else
               if ((letter + offset) < 'A') // need to wrap around to 'Z'
                  letter = (char)(letter + ALPHABET_SIZE + offset);
               else
                  letter = (char) (letter + offset);
         // build encoded message string
         encoded = encoded + letter;
      return encoded;
   public static String decode(String original, int offset)
      // declare constants
      final int ALPHABET_SIZE = 26; // used to wrap around A-Z
      String decoded = "";           // base for string to return
      char letter;                   // letter being processed
      // make original message upper case
      original = original.toUpperCase();
      // process each letter of message
      for (int index = 0; index < original.length(); index++)
         // get letter and determine whether to subtract cipher value
         letter = original.charAt(index);
         if (letter >= 'A' && letter <= 'Z')
            // is A-Z, so subtract cipher value
            // determine whether result will be out of A-Z range
            if ((letter - offset) < 'A') // wrap around to 'Z'
               letter = (char)(letter + ALPHABET_SIZE - offset);
            else
               if ((letter - offset) > 'Z') // wrap around to 'A'
                  letter = (char)(letter - ALPHABET_SIZE - offset);
               else
                  letter = (char) (letter - offset);
         // build decoded message
         decoded = decoded + letter;
      return decoded;
   // main controls flow throughout the program, presenting a
   // menu of options the user.
   public static void main (String[] args) throws IOException
     // declare constants
      final String PROMPT_CHOICE = "Enter your choice: ";
      final String PROMPT_VALID = "\nYou must enter a number between 1" +
                                  " and 4 to indicate your selection.\n";
      final String PROMPT_CIPHER = "\nEnter the offset value for a caesar " +
                                   "cipher: ";
      final String PROMPT_ENCODE = "\nEnter the text to encode: ";
      final String PROMPT_DECODE = "\nEnter the text to decode: ";
      final String SET_STR = "1"; // selection of 1 at main menu
      final String ENCODE_STR = "2"; // selection of 2 at main menu
      final String DECODE_STR = "3"; // selection of 3 at main menu
      final String EXIT_STR = "4"; // selection of 4 at main menu
      final int SET = 1;            // menu choice 1
      final int ENCODE = 2;         // menu choice 2
      final int DECODE =3;          // menu choice 4
      final int EXIT = 4;           // menu choice 3
      final int ALPHABET_SIZE = 26; // number of elements in alphabet
      // declare variables
      boolean finished = false; // whether or not to exit program
      String text;              // input string read from keyboard
      int choice;               // menu choice selected
      int offset = 0;           // caesar cipher offset
      // declare and instantiate input objects
      InputStreamReader reader = new InputStreamReader(System.in);
      BufferedReader input = new BufferedReader(reader);
      // Display program identification
      printID();
      // until the user selects the exit option, display the menu
      // and respond to the choice
      do
         // Display menu of options
         printMenu();
         // Prompt user for an option and read input
         text = getText(input, PROMPT_CHOICE);
         // While selection is not valid, prompt for correct info
         while (!text.equals(SET_STR) && !text.equals(ENCODE_STR) &&
                 !text.equals(EXIT_STR) && !text.equals(DECODE_STR))
            text = getText(input, PROMPT_VALID + PROMPT_CHOICE);
         // convert choice to an integer
         choice = new Integer(text).intValue();
         // respond to the choice selected
         switch(choice)
            case SET:
            // get the cipher value from the user and constrain to
               // -25..0..25
               offset = getInteger(input, PROMPT_CIPHER);
               offset %= ALPHABET_SIZE;
               break;
            case ENCODE:
               // get message to encode from user, and encode it using
               // the current cipher value
               text = getText(input, PROMPT_ENCODE);
               text = encode(text, offset);
               System.out.println("Encoded text is: " + text);
               break;
            case DECODE:
               // get message to decode from user, and decode it using
               // the current cipher value
               text = getText(input, PROMPT_DECODE);
               text = decode(text, offset);
               System.out.println("Decoded text is: " + text);
               break;
            case EXIT:
               // set exit flag to true
               finished = true ;
               break;
         } // end of switch on choice
      } while (!finished); // end of outer do loop
      // Thank user
      System.out.println("Thank you for using Cipher for all your" +
                         " code breaking and code making needs.");
}

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[javac] 189. theMessage.setSubject(subject, "iso8859_1");
[javac] <-------------------------------->
[javac] *** Error: No match was found for method "setSubject(java.lang.String, java.lang.String)".
Have I really misunderstood something so basic?? Surely the compiler knows that theMessage is an instance of MimeMessage??
Any clear explanation to explain why I get this compile error would be gratefully received. I have been faithfully declaring top-level classes instead of subclasses in my code, but if the compiler doesn't let you do so, then what's the point?

Ok, my confusion was started by an article on the
Collection classes which stated that:
Map theMap = new HashMap(); was better
programming practice.
Yep.
But the Map class is an Interface, right? - Whereas
Message is a normal class with subclass MimeMessage.
I think that's where my confusion started.Well, this isn't really a class vs. interface difference. It goes to which class (or interface) is the "highest" (closest to Object) and still has all the public interface you need.
There are cases where you'll declare a variable to be of a base class type like Message.
You just need to get into the habit of separating the left side of the = from the right side. On the left, you put the bare minimum that completely meets your needs. You say, "I need a List" or "I need a Map" or "I need a SortedMap" (a subinterface of Map) or "I need a Message" or "I need a MimeMesage".
Then, on the RHS =, you decide which particular class best implements the public interface that you said you need (by declaring it on the LHS). "For my Map, I'll use a HashMap." "For my Message, I'll use a MimeMessage." "For my MimeMessage, I'll use a MimeMessage".

How to access variables declared in java class file from jsp

i have a java package which reads values from property file. i have imported the package.classname in jsp file and also i have created an object for the class file like
classname object=new classname();
now iam able to access only the methods defined in the class but not the variables. i have defined connection properties in class file.
in jsp i need to use
statement=con.createstatement(); but it shows variable not declared.
con is declared in java class file.
how to access the variables?
thanks

here is the code
* testbean.java
* Created on October 31, 2006, 12:14 PM
package property;
import java.beans.*;
import java.io.Serializable;
public class testbean extends Object implements Serializable {
public String sampleProperty="test2";
public String getSampleProperty() {
return sampleProperty;
}jsp file
<%@ page contentType="text/html;charset=windows-1252"%>
<%@ page import="java.sql.*,java.util.*"%>
<html>
<head>
<title>Schedule Details</title>
</head>
<jsp:useBean id="ConProp" class="property.testbean"/>
<body>
Messge is : <jsp:getProperty name="msg" property="sampleProperty"/>
<%
out.println(ConProp.sampleProperty);
%>
</body>
</html>out.println(ConProp.sampleProperty) prints null value.
is this the right procedure to access bean variables
thanks

Some lib include Export Class,i use dependency tool to view this lib,how to know function's define

sample:?Polaris_Measure@CCBjxguance@@QAA_NPBG0@Z
i know CCBjxguance is export class,Polaris_Measure is class's function,@@QAA_NPBG0@Z is params and return value,but @@QAA_NPBG0@Z mean ？ which data type ？

So I take it that you have a .dll file but you do not have headers for it? Then finding out the params and return type won't help you much anyway.
That's a member function, to be able to use it you need an instance of that class. And to obtain an instance of that class you need to know the full definition of that class, including its member variables. Member variables aren't exported so you have no
way of knowing those, short of reverse engineering the .dll code.
Anyway, the full declaration of that function is:
public: bool __cdecl CCBjxguance::Polaris_Measure(unsigned short const *,unsigned short const *)
This can be obtained by using the undname utility from a VS command prompt:
undname "?Polaris_Measure@CCBjxguance@@QAA_NPBG0@Z"

When do we need to declare method as Synchronised

Hi Everyone,
I have a common class with number of methods which are used by some other servlet classes.It may possible that more than one class use same method at same time.
All method are staic because I want to access method with class name instead of object.Do i need to declare all method as Synchroinised.There is no global varaible.
reply as soon as possible.It is very urgent.
Thanks

If for example your class stores some values which can be updated by any1 then the methods should be syncronised to prevent them for entering a state where 2 events occur at the same time one reading and one writing.
I use the syncronised method to ensure the my internal data class is not compromised. These methods are generally 4 times slower i think.
Hope this helps

Declaring properties for classes

Hello all,
I need to declare a property for an entire class in a Flash
Actionscript 2.0 file (.as).
Regularly, I would use the line "falling = false", but it
says that that can't be used to define a class or as part of a
function. How can I declare "falling" as a property?
Any help appreciated.

PS - class properties should always be private as well:
class someClass
private var falling:Boolean = false;
function someClass()
Dave -
www.offroadfire.com
Head Developer
http://www.blurredistinction.com
Adobe Community Expert
http://www.adobe.com/communities/experts/

Can i create more than one attributes for the custom class created using java API

Hello everyone,
I have been creating class and its attributes programatically using java APIs, I want to know that is there any way to create multipal attributs for the same class in just one call of API with all the options for each attributes,
thanks

You can create a new class and define all of the Attributes at the time the class is created - this is the preferred way of creating classes. Use the addAttributeDefinition() method on ClassObjectDefinition. If you need to add attributes to existing classes, you can only add them one at a time (using the addAttribute() method on ClassObject).
(dave)

Do I need to declare a transaction in this case?

I am struggling to understand when it is necessary to declare my own transaction to ensure the data is properly updated.
For example, in the following code, which is part of a java bean in the EJB project, KeyFacade is a stateless session bean tied to the entity "Key". it is a standard EJB created with the netBeans 5.5 wizard. I have changed no defaults.
Do I need to declare a transaction, commit the transaction and close it when I use the "KeyFacade.edit(key);" in order to ensure the database is updated? Or is it automatically done because the .edit() method uses the entityManager and the persistence is container managed?
Would it make a difference if this bean was part of a WAR project?
    public BigInteger getNextKey(String tableName){
        KeyFacadeLocal KeyFacade = this.lookupKeyFacade();
        Key key = KeyFacade.findByTablename(tableName);
        long nextKey = key.getKeyvalue();
        BigInteger BINextKey =BigInteger.valueOf((int)nextKey);
        // now update the table by incrementing the key value by 1
        long incrementKey = nextKey + 1;
        key.setKeyvalue(incrementKey);
        KeyFacade.edit(key);
        return BINextKey;
    }

808239 wrote:
I have a Map<Integer, List<T>> data, and all the lists are initialized using Collections.synchronizedList().Seems like overkill to me. Your Map also looks like a Multimap, of which there are several existing implementations.
When I do the traversal, I want to traverse ALL lists in the map at the same timeI suspect not. What you want to do is to traverse each one in sequence.
so I have to sync all lists as shown in the API doc as follows: ...Seems like overkill to me, and will probably result in a very slow Map (not that there's any problem with that if it's the right thing to do; in this case, I suspect it isn't).
Is this approach ok?What are you trying to achieve? If you need full consistency for your iterators (ie, a snapshot of the entire Map at the time the iterator is created), you have a two choices (assuming you don't want to deal with update journals):
1. Lock the Map.
2. Clone the Map (and your clone() method should be synchronized).
Of the two, the second seems best to me, but neither is all that wonderful.
However, if all you need is weak consistency - that is to say, what you return reflects the state of the Map when Iterator.next() is called - all you really need to do is make sure that your Lists are synchronized when you do the read.
Since the List updates are the responsibility of your Map (I'm still presuming this is some sort of Multimap implementation), there's no real need to synchronize them; just synchronize the Map's own update methods.
I'd also suggest that you make sure your getValue() method hands back an [url http://download.oracle.com/javase/6/docs/api/java/util/Collections.html#unmodifiableList%28java.util.List%29]unmodifiable List to clients; otherwise they could start adding or removing values themselves.
HIH
Winston

How to reference a class without using the new keyword

I need to access some information from a class using the getter, but I don't want to use the new keyword because it will erase the information in the class. How can I reference the class without using the new keyword.
ContactInfo c = new ContactInfo(); // problem is here because it erases the info in the class
c.getFirstName();

quedogf94 wrote:
I need to access some information from a class using the getter, but I don't want to use the new keyword because it will erase the information in the class. How can I reference the class without using the new keyword.
ContactInfo c = new ContactInfo(); // problem is here because it erases the info in the class
c.getFirstName();No.
Using new does not erase anything. There's nothing to erase. It's brand new. It creates a new instance, and whatever that constructor puts in there, is there. If you then change the contents of that instance, and you want to see them, you have to have maintained a reference to it somewhere, and access that instance's state through that reference.
As already stated, you seem to be confused between class and instance, at the very least.
Run this. Study the output carefully. Make sure you understand why you see what you do. Then, if you're still confused, try to rephrase your question in a way that makes some sense based on what you've observed.
(And not that accessing a class (static) member through a reference, like foo1.getNumFoos() is syntactically legal, but is bad form, since it looks like you're accessing an instance (non-static) member. I do it here just for demonstration purposes.)
public class Foo {
private static int numFoos; // class variable
private int x; // instance varaible
public Foo(int x) {
    this.x = x;
    numFoos++;
// class method
public static int getNumFoos() {
    return numFoos;
// instance method
public int getX() {
    return x;
public static void main (String[] args) {
    System.out.println ("Foo.numFoos is " + Foo.getNumFoos ());
    System.out.println ();
    Foo foo1 = new Foo(42);
    System.out.println ("Foo.numFoos is " + Foo.getNumFoos ());
    System.out.println ("foo1.numFoos is " + foo1.getNumFoos ());
    System.out.println ("foo1.x is " + foo1.getX ());
    System.out.println ();
    Foo foo2 = new Foo(666);
    System.out.println ("Foo.numFoos is " + Foo.getNumFoos ());
    System.out.println ("foo1.numFoos is " + foo1.getNumFoos ());
    System.out.println ("foo1.x is " + foo1.getX ());
    System.out.println ("foo2.numFoos is " + foo2.getNumFoos ());
    System.out.println ("foo2.x is " + foo2.getX ());
    System.out.println ();
}

Hello, i am new to the mac and i need to learn how to re image using an external hard drive

Hello, i am new, like baby fresh new,...lol, to the mac and i need to learn how to re-image using an external hard drive.

How to replace or upgrade a drive in a laptop
Step One: Repair the Hard Drive and Permissions
Boot from your OS X Installer disc. After the installer loads select your language and click on the Continue button. When the menu bar appears select Disk Utility from the Installer menu (Utilities menu for Tiger, Leopard or Snow Leopard.) After DU loads select your hard drive entry (mfgr.'s ID and drive size) from the the left side list. In the DU status area you will see an entry for the S.M.A.R.T. status of the hard drive. If it does not say "Verified" then the hard drive is failing or failed. (SMART status is not reported on external Firewire or USB drives.) If the drive is "Verified" then select your OS X volume from the list on the left (sub-entry below the drive entry,) click on the First Aid tab, then click on the Repair Disk button. If DU reports any errors that have been fixed, then re-run Repair Disk until no errors are reported. If no errors are reported click on the Repair Permissions button. Wait until the operation completes, then quit DU and return to the installer.
If DU reports errors it cannot fix, then you will need Disk Warrior and/or Tech Tool Pro to repair the drive. If you don't have either of them or if neither of them can fix the drive, then you will need to reformat the drive and reinstall OS X.
Step Two: Remove the old drive and install the new drive. Place the old drive in an external USB enclosure. You can buy one at OWC who is also a good vendor for drives.
Step Three: Boot from the external drive. Restart the computer and after the chime press and hold down the OPTION key until the boot manager appears. Select the icon for the external drive then click on the downward pointing arrow button.
Step Four: New Hard Drive Preparation
1. Open Disk Utility in your Utilities folder.
2. After DU loads select your new hard drive (this is the entry with the mfgr.'s ID and size) from the left side list. Note the SMART status of the drive in DU's status area. If it does not say "Verified" then the drive is failing or has failed and will need replacing. Otherwise, click on the Partition tab in the DU main window.
3. Under the Volume Scheme heading set the number of partitions from the drop down menu to one. Set the format type to Mac OS Extended (Journaled.) Click on the Options button, set the partition scheme to GUID then click on the OK button. Click on the Partition button and wait until the process has completed.
4. Select the volume you just created (this is the sub-entry under the drive entry) from the left side list. Click on the Erase tab in the DU main window.
5. Set the format type to Mac OS Extended (Journaled.) Click on the Options button, check the button for Zero Data and click on OK to return to the Erase window.
6. Click on the Erase button. The format process can take up to several hours depending upon the drive size.
Step Five: Clone the old drive to the new drive
1. Open Disk Utility from the Utilities folder.
2. Select the destination volume from the left side list.
3. Click on the Restore tab in the DU main window.
4. Check the box labeled Erase destination.
5. Select the destination volume from the left side list and drag it to the Destination entry field.
6. Select the source volume from the left side list and drag it to the Source entry field.
7. Double-check you got it right, then click on the Restore button.
Destination means the new internal drive. Source means the old external drive.
Step Six: Open the Startup Disk preferences and select the new internal volume. Click on the Restart button. You should boot from the new drive. Eject the external drive and disconnect it from the computer.

Need to declare GUID in Class to use in Workfloq

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