Switch Statement - orphaned case

Hello All
Could anyone explain why i get orphaned case when compiling ? ive never seen it before ?
After some searching all i could find was to remove ; from Switch(input);Any ideas ? thankyou
import java.util.*;
public class Menu
public static void main (String[] args)
Scanner kybd = new Scanner (System.in);
System.out.println ("Please Chose from 1-4");
System.out.println("1.               Good Morning");
System.out.println("2.               Good Afternoon");
System.out.println("3.               Good Evening");
System.out.println("4.               Exit");
int input = 0;
do
input = kybd.nextInt();
Switch(input);
case 1:System.out.println("Good Morning");
     break;
case 2:System.out.println("Good Afternoon");
     break;
case 3:System.out.println("Good Evening");
     break;
case 4:System.out.println("Exit");
     System.exit(4);
     break;
while (input !=4);
}}

heya all sorry may have been a bit confusing what i said , i did remove the ; but i get ; expected
And
Exception in thread "main" java.lang.RuntimeException: Uncompilable source code
at Menu.main(Menu.java:21)
this is shown as orphaned case by a red icon in netbeans.
Could anyone explain what an orphaned case is ?
import java.util.*;
public class Menu
public static void main (String[] args)
Scanner kybd = new Scanner (System.in);
System.out.println ("Please Chose from 1-4");
System.out.println("1.               Good Morning");
System.out.println("2.               Good Afternoon");
System.out.println("3.               Good Evening");
System.out.println("4.               Exit");
int input = 0;
do
input = kybd.nextInt();
Switch(input)
case 1:System.out.println("Good Morning");
     break;
case 2:System.out.println("Good Afternoon");
     break;
case 3:System.out.println("Good Evening");
     break;
case 4:System.out.println("Exit");
     System.exit(4);
     break;
while (input !=4);
}}

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    <=====================================================================>
    <=====================================================================>
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    begin
    case
    when achar = 'A' then dbms_output.put_line('The description was
    Excellent');
    when achar = 'B' then dbms_output.put_line('The description was Very
    Good');
    when achar = 'C' then dbms_output.put_line('The description was
    Good');
    when achar = 'D' then dbms_output.put_line('The description was
    Fair');
    when achar = 'F' then dbms_output.put_line('The description was
    Poor');
    else dbms_output.put_line('The description was No such Grade');
    end case;
    end;
    - - - - - - - - - - - - - - - - Code ends here - - - - - - - - - - - -
    Sample 4:
    This sample demonstrates the proper syntax for a case expression of
    the
    type discussed in Sample 3 above.
    - - - - - - - - - - - - - - - - Code begins here - - - - - - - - - - - -
    set serveroutput on
    declare
    achar char(1) := '&achar';
    description varchar2(20);
    begin
    description :=
    case
    when achar = 'A' then 'Excellent'
    when achar = 'B' then 'Very Good'
    when achar = 'C' then 'Good'
    when achar = 'D' then 'Fair'
    when achar = 'F' then 'Poor'
    else 'No such grade'
    end;
    dbms_output.put_line('The description was ' || description);
    end;
    - - - - - - - - - - - - - - - - Code ends here - - - - - - - - - - - -
    Sample 5:
    This sample demonstrates the use of nested case statements. It is
    also
    permissable to nest case expressions within a case statement (though
    it
    is not demonstrated here), but nesting of case statements within a
    case
    expression is not possible since statements do not return any value.
    - - - - - - - - - - - - - - - - Code begins here - - - - - - - - - - - -
    set serveroutput on
    declare
    anum1 number := &anum1;
    anum2 number := &anum2;
    answer number;
    begin
    case anum1
    when 1 then case anum2
    when 1 then answer := 10;
    when 2 then answer := 20;
    when 3 then answer := 30;
    else answer := 999;
    end case;
    when 2 then case anum2
    when 1 then answer := 15;
    when 2 then answer := 25;
    when 3 then answer := 35;
    else answer := 777;
    end case;
    else answer := 555;
    end case;
    dbms_output.put_line('The answer is ' || answer);
    end;
    - - - - - - - - - - - - - - - - Code ends here - - - - - - - - - - - -
    Sample 6:
    This sample demonstrates nesting of case expressions within another
    case
    expression. Note again the absence of semicolons to terminate both
    the
    nested case expression and the individual cases of those
    expressions.
    - - - - - - - - - - - - - - - - Code begins here - - - - - - - - - - - -
    set serveroutput on
    declare
    anum1 number := &anum1;
    anum2 number := &anum2;
    answer number;
    begin
    answer :=
    case anum1
    when 1 then case anum2
    when 1 then 10
    when 2 then 20
    when 3 then 30
    else 999
    end
    when 2 then case anum2
    when 1 then 15
    when 2 then 25
    when 3 then 35
    else 777
    end
    else 555
    end;
    dbms_output.put_line('The answer is ' || answer);
    end;
    - - - - - - - - - - - - - - - - Code ends here - - - - - - - - - - - -
    Although PL/SQL anonymous blocks have been used in all of the examples
    so far,
    case statements and expressions can also be used in procedures,
    functions, and
    packages with no changes to the syntax.
    The following samples are included for completeness and demonstrate the
    use of
    case statements and/or expressions in each of these scenarios.
    Sample 7:
    This sample demonstrates use of a case statement in a stored
    procedure.
    Note that this sample also demonstrates that it is possible for each
    of
    the items in the case body to consist of more than one statement.
    - - - - - - - - - - - - - - - - Code begins here - - - - - - - - - - - -
    set serveroutput on
    create or replace procedure testcasestmt ( anum IN number ) is
    begin
    case
    when anum = 1 then dbms_output.put_line('The number was One');
    dbms_output.put_line('In case 1');
    when anum = 2 then dbms_output.put_line('The number was Two');
    dbms_output.put_line('In case 2');
    when anum = 3 then dbms_output.put_line('The number was Three');
    dbms_output.put_line('In case 3');
    when anum = 4 then dbms_output.put_line('The number was Four');
    dbms_output.put_line('In case 4');
    when anum = 5 then dbms_output.put_line('The number was Five');
    dbms_output.put_line('In case 5');
    else dbms_output.put_line('The description was Invalid input');
    dbms_output.put_line('In the else case');
    end case;
    end;
    exec testcasestmt(&anum);
    - - - - - - - - - - - - - - - - Code ends here - - - - - - - - - - - -
    Sample 8:
    This sample demonstrates the use of a case statement in a stored
    package.
    - - - - - - - - - - - - - - - - Code begins here - - - - - - - - - - - -
    set serveroutput on
    create or replace package testpkg2 is
    procedure testcasestmt ( anum IN number );
    function testcasestmt_f ( anum IN number ) return number;
    end testpkg2;
    create or replace package body testpkg2 is
    procedure testcasestmt ( anum IN number ) is
    begin
    case
    when anum = 1 then dbms_output.put_line('The number was One');
    dbms_output.put_line('In case 1');
    when anum = 2 then dbms_output.put_line('The number was Two');
    dbms_output.put_line('In case 2');
    when anum = 3 then dbms_output.put_line('The number was Three');
    dbms_output.put_line('In case 3');
    when anum = 4 then dbms_output.put_line('The number was Four');
    dbms_output.put_line('In case 4');
    when anum = 5 then dbms_output.put_line('The number was Five');
    dbms_output.put_line('In case 5');
    else dbms_output.put_line('The description was Invalid input');
    dbms_output.put_line('In the else case');
    end case;
    end;
    function testcasestmt_f ( anum IN number ) return number is
    begin
    case
    when anum = 1 then dbms_output.put_line('The number was One');
    dbms_output.put_line('In case 1');
    when anum = 2 then dbms_output.put_line('The number was Two');
    dbms_output.put_line('In case 2');
    when anum = 3 then dbms_output.put_line('The number was Three');
    dbms_output.put_line('In case 3');
    when anum = 4 then dbms_output.put_line('The number was Four');
    dbms_output.put_line('In case 4');
    when anum = 5 then dbms_output.put_line('The number was Five');
    dbms_output.put_line('In case 5');
    else dbms_output.put_line('The description was Invalid input');
    dbms_output.put_line('In the else case');
    end case;
    return anum;
    end;
    end testpkg2;
    exec testpkg2.testcasestmt(&anum);
    variable numout number
    exec :numout := testpkg2.testcasestmt_f(&anum);
    print numout
    - - - - - - - - - - - - - - - - Code ends here - - - - - - - - - - - -
    Sample 9:
    This sample demonstrates the use of a case expression in a stored
    package.
    - - - - - - - - - - - - - - - - Code begins here - - - - - - - - - - - -
    set serveroutput on
    create or replace package testpkg is
    procedure testcase ( anum IN number );
    function testcase_f ( anum IN number ) return number;
    end testpkg;
    create or replace package body testpkg is
    procedure testcase ( anum IN number ) is
    anumber number := anum;
    anothernum number;
    begin
    anothernum :=
    case
    when anumber = 1 then anumber + 1
    when anumber = 2 then anumber + 2
    when anumber = 3 then anumber + 3
    when anumber = 4 then anumber + 4
    when anumber = 5 then anumber + 5
    else 999
    end;
    dbms_output.put_line('The number was ' || anothernum);
    end;
    function testcase_f ( anum IN number ) return number is
    anumber number := anum;
    anothernum number;
    begin
    anothernum :=
    case
    when anumber = 1 then anumber + 1
    when anumber = 2 then anumber + 2
    when anumber = 3 then anumber + 3
    when anumber = 4 then anumber + 4
    when anumber = 5 then anumber + 5
    else 999
    end;
    dbms_output.put_line('The number was ' || anothernum);
    return anothernum;
    end;
    end testpkg;
    variable numout number
    exec testpkg.testcase(&anum);
    exec :numout := testpkg.testcase_f(&anum);
    print numout
    - - - - - - - - - - - - - - - - Code ends here - - - - - - - - - - - -
    제약 사항
    다음의 databasetype은 case 문에서 지원되지 않는다.
    BLOB
    BFILE
    VARRAY
    Nested Table
    PL/SQL Record
    PL/SQL Version 2 tables (index by tables)
    Object type (user-defined type)
    All of these types except for object types face a similar restriction
    even for if statements (i.e. they cannot be compared for equality directly) so this is unlikely to change for these types. Lack of support for object types is simply an implementation restriction which may be relaxed in future releases.
    Reference Ducumment
    Oracle 8.1.7 Manual
    NOTE:131557.1

    I have done the following code but doesn't
    like the statement of - "case(butNext)". What do you mean "doesn't like" -- did you get an error message?
    I'm guessing it won't compile because you're trying to switch on a Button.
    I tried something
    like "g.fillOval(100,50,70,90, BorderLayout.NORTH)"...no that doesn't make sense. You only use BorderLayout.NORTH when you're adding components to a BorderLayout layout manager. An oval is not a component and fillOval isn't adding a component and Graphics is not a Panel or layout manager.
    Would appreciate it if someone could tell me how to position
    shapes using the graohic method. I think the problem is that you're confusing shapes with components.

  • Using a Switch statement for Infix to Prefix Expressions

    I am stuck on the numeric and operator portion of the switch statement...I have the problem also figured out in an if/else if statement and it works fine, but the requirements were for the following algorithm:
    while not end of expression
    switch next token of expression
    case space:
    case left parenthesis:
    skip it
    case numeric:
    push the string onto the stack of operands
    case operator:
    push the operator onto the stack of operators
    case right parenthesis:
    pop two operands from operand stack
    pop one operator from operator stack
    form a string onto operand stack
    push the string onto operand stack
    pop the final result off the operand stack
    I know that typically case/switch statement's can only be done via char and int's. As I said I am stuck and hoping to get some pointers. This is for a homework assignment but I am really hoping for a few pointers. I am using a linked stack class as that was also the requirements. Here is the code that I have:
       import java.io.*;
       import java.util.*;
       import java.lang.*;
    /*--------------------------- PUBLIC CLASS INFIXTOPREFIX --------------------------------------*/
    /*-------------------------- INFIX TO PREFIX EXPRESSIONS --------------------------------------*/
        public class infixToPrefix {
          private static LinkedStack operators = new LinkedStack();
          private static LinkedStack operands = new LinkedStack();
            // Class variable for keyboard input
          private static BufferedReader stdin = new BufferedReader(new InputStreamReader(System.in));
             // Repeatedly reads in infix expressions and evaluates them
           public static void main(String[] args) throws IOException {
          // variables
             String expression, response = "y";
          // obtain input of infix expression from user
             while (response.charAt(0) == 'y') {
                System.out.println("Enter a parenthesized infix expression.");          // prompt the user
                System.out.println("Example: ( ( 13 + 2 ) * ( 10 + ( 8 / 3 ) ) )");
                System.out.print("Or as: ((13+2)*(10+(8/3))):  ");
                expression = stdin.readLine();     // read input from the user
             // output prefix expression and ask user if they would like to continue          
                System.out.println("The Prefix expression is: " + prefix(expression));     // output expression
                System.out.println("Evaluate another? y or n: ");          // check with user for anymore expressions
                response = stdin.readLine();     // read input from user
                if (response.charAt(0) == 'n') {          // is user chooses n, output the statement
                   System.out.println("Thank you and have a great day!");
                }     // end if statement
             }     // end while statement
          }     // end method main
       /*------------- CONVERSION OF AN INFIX EXPRESSION TO A PREFIX EXPRESSION ------------*/ 
       /*--------------------------- USING A SWITCH STATEMENT ------------------------------*/
           private static String prefix(String expression) {
                // variables
             String symbol, operandA, operandB, operator, stringA, outcome;
               // initialize tokenizer
             StringTokenizer tokenizer = new StringTokenizer(expression, " +-*/() ", true);     
             while (tokenizer.hasMoreTokens()) {
                symbol = tokenizer.nextToken();     // initialize symbol     
                switch (expression) {
                   case ' ':
                      break;     // accounting for spaces
                   case '(':
                      break;     // skipping the left parenthesis
                   case (Character.isDigit(symbol.charAt(0))):      // case numeric
                      operands.push(symbol);                                   // push the string onto the stack of operands
                      break;
                   case (!symbol.equals(" ") && !symbol.equals("(")):     // case operator
                      operators.push(symbol);                                             // push the operator onto the stack of operators
                      break;
                   case ')':
                      operandA = (String)operands.pop();     // pop off first operand
                      operandB = (String)operands.pop();     // pop off second operand
                      operator = (String)operators.pop();     // pop off operator
                      stringA = operator + " " + operandB + " " + operandA;          // form the new string
                      operands.push(stringA);
                      break;
                }     // end switch statement
             }     // end while statement
             outcome = (String)operands.pop();     // pop off the outcome
             return outcome;     // return outcome
          }     // end method prefix
       }     // end class infixToPrefixAny help would be greatly appreciated!

    so, i did what flounder suggested:
             char e = expression.charAt(0);
             while (tokenizer.hasMoreTokens()) {
                symbol = tokenizer.nextToken();     // initialize symbol     
                switch (e) {
                   case ' ':
                      break;     // accounting for spaces
                   case '(':
                      break;     // skipping the left parenthesis
                   case '0':
                   case '1':
                   case '2':
                   case '3':
                   case '4':
                   case '5':
                   case '6':
                   case '7':
                   case '8':
                   case '9':
                      operands.push(symbol);     // push the string onto the stack of operands
                      break;                               // case numeric
                   case '+':
                   case '-':
                   case '*':
                   case '/':
                      operators.push(symbol);     // push the operator onto the stack of operators
                      break;                               // case operator
                   case ')':
                      operandA = (String)operands.pop();     // pop off first operand
                      operandB = (String)operands.pop();     // pop off second operand
                      operator = (String)operators.pop();     // pop off operator
                      stringA = operator + " " + operandB + " " + operandA;          // form the new string
                      operands.push(stringA);
                      break;
                   default:
                }     // end switch statement
             }     // end while statement
             outcome = (String)operands.pop();     // pop off the outcome
             return outcome;     // return outcomeafter this, I am able to compile the code free of errors and I am able to enter the infix expression, however, the moment enter is hit it provides the following errors:
    Exception in thread "main" java.lang.NullPointerException
         at LinkedStack$Node.access$100(LinkedStack.java:11)
         at LinkedStack.pop(LinkedStack.java:44)
         at infixToPrefix.prefix(infixToPrefix.java:119)
         at infixToPrefix.main(infixToPrefix.java:59)
    Any ideas as to why? I am still looking through seeing if I can't figure it out, but any suggestions? Here is the linked stack code:
        public class LinkedStack {
       /*--------------- LINKED LIST NODE ---------------*/
           private class Node {
             private Object data;
             private Node previous;
          }     // end class node
       /*--------------  VARIABLES --------------*/
          private Node top;
      /*-- Push Method: pushes object onto LinkedStack --*/     
           public void push(Object data) {
             Node newTop = new Node();
             newTop.data = data;
             newTop.previous = top;
             top = newTop;
          }     // end function push
       /*--- Pop Method: pop obejct off of LinkedStack ---*/
           public Object pop()      {
             Object data = top.data;
             top = top.previous;
             return data;
          }     // end function pop
       } // end class linked stackEdited by: drmsndrgns on Mar 12, 2008 8:10 AM
    Edited by: drmsndrgns on Mar 12, 2008 8:14 AM
    Edited by: drmsndrgns on Mar 12, 2008 8:26 AM

  • Methods & Switch Statement in java.. HELP!!

    hi all...
    i am having a slight problem as i am constructing a method --> menu() which handles displaying
    menu options on the screen, prompting the user to select A, B, C, D, S or Q... and then returns the user
    input to the main method!!!
    i am having issues with switch statement which processes the return from menu() methd,,,
    could you please help?!!
    here is my code...
    import java.text.*;
    import java.io.*;
    public class StudentDriver
       public static void main(String[] args) throws IOException
          for(;;)
             /* Switch statement for menu manipulation */
             switch(menu())
                   case A: System.out.println("You have selected option A");
                                  break;
                   case B: System.out.println("You have selected option B");
                                  break;
                   case C: System.out.println("You have selected option C");
                                  break;
                   case D: System.out.println("You have selected option D");
                                  break;
                   case S: System.out.println("You have selected option S");
                                  break;
                   case Q: System.out.println("\n\n\n\n\n\n\t\t Thank you for using our system..." +
                                                                    "\n\n\t\t\t Good Bye \n\n\n\n");
                                  exit(0);    
       static char menu()
          char option;
          BufferedReader stdin = new BufferedReader(new InputStreamReader(System.in));       
          System.out.println("\n\n");
          System.out.println("\n\t\t_________________________");
          System.out.println("\t\t|                       |");
          System.out.println("\t\t| Student Manager Menu  |");
          System.out.println("\t\t|_______________________|");
          System.out.println("\n\t________________________________________");
          System.out.println("\t| \t\t\t\t\t|");
          System.out.println("\t| Add new student\t\t A \t|");
          System.out.println("\t| Add credits\t\t\t B \t|");
          System.out.println("\t| Display one record\t\t C \t|");
          System.out.println("\t| Show the average credits\t D \t|");
          System.out.println("\t| \t\t\t\t\t|");
          System.out.println("\t| Save the changes\t\t S \t|");
          System.out.println("\t| Quit\t\t\t\t Q \t|");
          System.out.println("\t|_______________________________________|\n");
          System.out.print("\t  Your Choice: ");
          option = stdin.readLine();
             return option;
    }Thanking your help in advance...
    yours...
    khalid

    Hi,
    There are few changes which u need to make for making ur code work.
    1) In main method, in switch case change case A: to case 'A':
    Characters should be represented in single quotes.
    2) in case 'Q' change exit(0) to System.exit(0);
    3) The method static char menu() { should be changed to static char menu() throws IOException   {
    4) Change option = stdin.readLine(); to
    option = (char)stdin.read();
    Then compile and run ur code. This will work.
    Or else just copy the below code
    import java.text.*;
    import java.io.*;
    public class StudentDriver{
         public static void main(String[] args) throws IOException {
              for(;;) {
                   /* Switch statement for menu manipulation */
                   switch(menu()) {
                        case 'A': System.out.println("You have selected option A");
                        break;
                        case 'B': System.out.println("You have selected option B");
                        break;
                        case 'C': System.out.println("You have selected option C");
                        break;
                        case 'D': System.out.println("You have selected option D");
                        break;
                        case 'S': System.out.println("You have selected option S");
                        break;
                        case 'Q':
                        System.out.println("\n\n\n\n\n\n\t\t Thank you for using our system..." +
                        "\n\n\t\t\t Good Bye \n\n\n\n");
                        System.exit(0);
         static char menu() throws IOException {
              char option;
              BufferedReader stdin = new BufferedReader(new InputStreamReader(System.in));
              System.out.println("\n\n");
              System.out.println("\n\t\t_________________________");
              System.out.println("\t\t| |");
              System.out.println("\t\t| Student Manager Menu |");
              System.out.println("\t\t|_______________________|");
              System.out.println("\n\t________________________________________");
              System.out.println("\t| \t\t\t\t\t|");
              System.out.println("\t| Add new student\t\t A \t|");
              System.out.println("\t| Add credits\t\t\t B \t|");
              System.out.println("\t| Display one record\t\t C \t|");
              System.out.println("\t| Show the average credits\t D \t|");
              System.out.println("\t| \t\t\t\t\t|");
              System.out.println("\t| Save the changes\t\t S \t|");
              System.out.println("\t| Quit\t\t\t\t Q \t|");
              System.out.println("\t|_______________________________________|\n");
              System.out.print("\t Your Choice: ");
              option = (char)stdin.read();
              return option;
    regards
    Karthik

  • Keyboard Input and switch statement error

    Hi,
    Below is a program to read an alphabet and check whether its a vowel/consonent using switch statement.
    Its always executin' the default stmt and not going into the case 1. This is because the ascii value of the character is being stored rather than the character.Could you please rectify this program?
    Thanks,
    vs
    import java.io.*;
    class vowel
    public static void main(String args[])throws Exception
    System.out.println("Enter a character:");
    char ch=(char)System.in.read();
    switch(ch)
    case 1: if(ch=='a')//||ch=='e'||ch=='i'||ch=='o'||ch=='u')
    System.out.println("The character is a vowel-a");
    break;
    default: System.out.println("The character is a consonent ! ");

         ch = Character.toLowerCase(ch);
         switch (ch) {
              case 'a' :
              case 'e' :
              case 'i' :
              case 'o' :
              case 'u' :
                   System.out.println("The character is a vowel: " + ch);
                   break;
              default :
                   System.out.println("The character is a consonent ! ");
         }

  • Switch statement for AS3  - Flash CS3

    Hey guys, I currently have a code of a switch statement for as1- as2.
    This is it:
    switch (int(Math.random() * 20))
        case 0:
            hint = "The total amount of confusion in this world remains constant. It just gets shifted around.";
            break;
        case 1:
            hint = "If you experience poor performance, adjust the quality settings in your preference menu option.";
            break;
        case 2:
            hint = "Anticipation of death is better than death itself.";
            break;
        case 3:
            hint = "At the core of all well-founded belief lies belief that is unfounded.";
            break;
        case 4:
            hint = "The problem with instant gratification is that it takes too long.";
            break;
        case 5:
            hint = "Never let your schooling interfere with your education.";
            break;
        case 6:
            hint = "Beware of geeks bearing gifs.";
            break;
        case 7:
            hint = "Collaboration is essential: It allows you to blame someone else.";
            break;
        case 8:
            hint = "Read my MIPs - no new VAXes.";
            break;
        case 9:
            hint = "Where is the sea, said the fish, as they swam through it.";
            break;
        case 10:
            hint = "You can safely blame any bugs on Aoedipus, who is too busy grinding battlegrounds to do QA on her own work.";
            break;
        case 11:
            hint = "Anything worth doing is worth overdoing.";
            break;
        case 12:
            hint = "There is more to life than increasing its speed.";
            break;
        case 13:
            hint = "Don\'t worry, this will take about as long as the time it takes to play a 2v2 match with 4 ret pallies.";
            break;
        case 14:
            hint = "There is nothing worse than the brilliant image of a fuzzy concept.";
            break;
        case 15:
            hint = "If you are not part of the solution, you are part of the precipitate.";
            break;
        case 16:
            hint = "Two wrongs don\'t make a right, but three lefts do.";
            break;
        case 17:
            hint = "The heresy of today is the logic of tomorrow.";
            break;
        case 18:
            hint = "It\'s not that life is so short, it\'s just that you\'re dead a really long time.";
            break;
        case 19:
            hint = "Those who love sausage, the law, and holy canon should never watch any of them being made.";
            break;
        case 20:
            hint = "What if there were no hypothetical questions?";
            break;
    } // End of switch
    hint = "HINT: " + hint;
    This code is for a dynamic tet with the var 'hint' (No ' ' )
    But in as3 there is no var and I am having trouble converting it to AS3 coding, can someone show me the correct conversion of the code to make it work with AS3. I will make the instance name 'hint'.
    Thank you ahead of time.

    In addition to what other guys said, if you still want to use switch it should be:
    switch (Math.round(Math.random() * 20)) - this will cover all the possible integers.
    Nevertheless, I believe using switch in this case is not as efficient and scalable as using, say, array.
    1. array index access is faster than switch.
    2. if you need to make additions, you will need to make additions in switch while with array you just need to add/subtract member
    3. if you will need to switch to a more dynamic model (say, getting hints from xml) - it will not be possible with switch
    4. you may need a greater degree of randmization (Math.random is not as random as one may think) in which case resorting/reordering array is much simpler and faster.
    So, I suggest you switch to the following code:
    var hints:Array = [];
    hints[0] = "Anticipation of death is better than death itself.";
    hints[1] = "Anything worth doing is worth overdoing.";
    hints[2] = "At the core of all well-founded belief lies belief that is unfounded.";
    hints[3] = "Beware of geeks bearing gifs.";
    hints[4] = "Collaboration is essential: It allows you to blame someone else.";
    hints[5] = "Don\'t worry, this will take about as long as the time it takes to play a 2v2 match with 4 ret pallies.";
    hints[6] = "If you are not part of the solution, you are part of the precipitate.";
    hints[7] = "If you experience poor performance, adjust the quality settings in your preference menu option.";
    hints[8] = "It\'s not that life is so short, it\'s just that you\'re dead a really long time.";
    hints[9] = "Never let your schooling interfere with your education.";
    hints[10] = "Read my MIPs - no new VAXes.";
    hints[11] = "The heresy of today is the logic of tomorrow.";
    hints[12] = "The problem with instant gratification is that it takes too long.";
    hints[13] = "The total amount of confusion in this world remains constant. It just gets shifted around.";
    hints[14] = "There is more to life than increasing its speed.";
    hints[15] = "There is nothing worse than the brilliant image of a fuzzy concept.";
    hints[16] = "Those who love sausage, the law, and holy canon should never watch any of them being made.";
    hints[17] = "Two wrongs don\'t make a right, but three lefts do.";
    hints[18] = "What if there were no hypothetical questions?";
    hints[19] = "Where is the sea, said the fish, as they swam through it.";
    hints[20] = "You can safely blame any bugs on Aoedipus, who is too busy grinding battlegrounds to do QA on her own work.";
    hint = hints[int(Math.random() * hints.length)];
    // OR
    hint = hints[Math.round(Math.random() * (hints.length - 1))];

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