Is there try and catch in oracle query ?
hi
is there try and catch in oracle query ?
try
do some update
catch
if there was error go to here
}
>
is there try and catch in oracle query ?
>
Yes - except it uses BEGIN --- EXCEPTION --- END where BEGIN replaces the try and EXCEPTION replaces the catch.
BEGIN
-- Calculation might cause division-by-zero error.
pe_ratio := stock_price / net_earnings;
dbms_output.put_line('Price/earnings ratio = ' || pe_ratio);
EXCEPTION -- exception handlers begin
-- Only one of the WHEN blocks is executed.
WHEN ZERO_DIVIDE THEN -- handles 'division by zero' error
dbms_output.put_line('Company must have had zero earnings.');
pe_ratio := null;
WHEN OTHERS THEN -- handles all other errors
dbms_output.put_line('Some other kind of error occurred.');
pe_ratio := null;
END; -- exception handlers and block end here
/The multiple WHEN conditions correspond to using multiple 'catch' statements in Java.
Similar Messages
-
Hi All, just a quick question really...
Was wondering how I would go about checking user inputs into textfields?
For example if the user enters the number 12 and you're only allowed to enter numbers between 1-10 how could I send a pop up error message to say "You can only enter numbers between 1-10"
A way I thought about doing this was with a try and catch method, there could be another way of doing this, all other methods appreciated too.
function captureNumbers(evt:MouseEvent):void {
try{
numberSelect.push(Number(number1.text));
catch{
if (numberSelect > 10){
throw new Error("You must choose a number between 1 - 10");
button1.addEventListener( MouseEvent.MOUSE_UP, captureNumbers);
This is what ive got so far which doesn't seem to be working...
Thanks in advancepublic class userBean(String user) {
// Loads user preferences
String fname;
String lname;
String greeting;
void public readDB()
Connection conn = null;
PreparedStatement pstmt = null;
ResultSet result = null;
try {
Class.forName("oracle.jdbc.driver.OracleDriver");
catch (Exception e) { System.out.println("Can't load JDBC driver:" + e); return; }
try{
conn = DriverManager.getConnection
("jdbc:oracle:thin:@username.domain.com:1521:adm2", "login", "pass");
// @machineName:port:SID, userid, password d
stmt = conn.prepareStatement("select fname,lname,greeting from people where userid = ?");
stmt.setString(1,user);
result= stmt.executeQuery();
fname = result.getString(1);
lname = result.getString(2);
stmt.close();
catch (Exception e) { System.out.println("Error with JDBC Connection:" + e); return;}
} -
with out any try and catch is exception handling is possible in java when doing manupulation with database.
assume mydatabase is oracle,if i am going to insert a record of a primarykey field, which is already existing.i don't want to put with in try and catch.This is my case.if u have the answer for this please mail me.
thanks
rajanassume mydatabase is oracle,if i am going to insert a
record of a primarykey field, which is already existing.
i don't want to put with in try and catch.why not? i thought the fact that checked exceptions get thrown from methods is a good thing, since you're forced either to deal with the fault immediately, or throw to the next level up, possibly transformed into an application-level exception. if methods were to simply return method-specific error codes, nothing forces anything in the program to deal with errors in a reasonable manner. not that exceptions force sensible handling of the fault--but they do force recognition of the fault.
what alternative do you desire?
--p -
Try and Catch don't work on powershell module
Hi everyone,
i'm tring to create a module with a try and catch, but when i call it, the block of expetion doesn't work as i expect, while if i use the code as a function only it works...
Here the code
function global:Process{
param([string]$Process)
######################################MAIL################################
function global:SendMail(){
param([string]$Services)
$Dest="xxx"
$smtpServer = "xxx"
$msg = new-object Net.Mail.MailMessage
$smtp = new-object Net.Mail.SmtpClient($smtpServer)
$msg.From = "xxx"
$msg.To.Add($Dest)
$msg.Subject = "Notification about $Services activity"
$msg.Body = "xxxx"
$smtp.Send($msg)
switch($Process){
"DSP"{
if((Get-Service Fax | ForEach-Object {$_.Status}) -eq "Stopped"){
try
start-service Fax -ea Stop
catch
if ( $error[0].Exception -match "Microsoft.PowerShell.Commands.ServiceCommandException")
$error[0].Exception | Out-File C:\log.txt
$SendMail $Process
elseif((Get-Service Fax | ForEach-Object {$_.Status}) -eq "Running"){
Stop-Service Fax}
Export-ModuleMember -Function Process
Could you help me? Thanks so much
CristianHello,
You should ask in the
Windows PowerShell forum.
Karl
When you see answers and helpful posts, please click Vote As Helpful, Propose As Answer, and/or Mark As Answer.
My Blog: Unlock PowerShell
My Book:
Windows PowerShell 2.0 Bible
My E-mail: -join ('6F6C646B61726C406F75746C6F6F6B2E636F6D'-split'(?<=\G.{2})'|%{if($_){[char][int]"0x$_"}}) -
Repost as question for points: What did I do wrong? (Try and Catch program)
This has to be a try and catch program.
This is the given output sample:
OUTPUT SAMPLE #2 for input.txt: 12345 222256 -3 123 -56784 555557 6345678 x x x 81234 121212 x x 123434 x x 1009098 2099
Please input the name of the file to be opened: input.txt
For number 12345 the sum of digits is: 15
For number 222256 the sum of digits is: 19
Found an integer (-3), but it is negative. Will ignore!
For number 123 the sum of digits is: 6
Found an integer (-56784), but it is negative. Will ignore!
For number 555557 the sum of digits is: 32
For number 6345678 the sum of digits is: 39
For number 81234 the sum of digits is: 18
For number 121212 the sum of digits is: 9
For number 123434 the sum of digits is: 17
For number 1009098 the sum of digits is: 27
For number 2099 the sum of digits is: 20
Here is what I have so far.
import java.util.Scanner;
import java.io.*;// FileNotFoundException
public class Assignment3b {
public static void main (String[]args){
Boolean fileOpened = true;
String fileName;
int n,mod=0,sum=0,t=0;
Scanner inputFile = new Scanner(System.in);
System.out.print("Please input the name of the file to be opened: ");
fileName = inputFile.nextLine();
System.out.println();
try {
inputFile = new Scanner(new File(fileName));
catch (FileNotFoundException e) {
System.out.println("--- File Not Found! ---");
fileOpened = false;
if (fileOpened) {
while (inputFile.hasNext()){
if (inputFile.hasNextInt()){
n = inputFile.nextInt();
t=n;
while(n>0){
mod = n % 10;
sum = mod + sum;
n = n/10;
System.out.println ("For number " + t + " the sum of digits is : " + sum);
mod = 0;
sum = 0;
while (n<0) {
System.out.println ("Found an integer (" + t + "), but it negative. Will ignore!");
inputFile.next();
n = inputFile.nextInt();
else {
inputFile.next();
}Everything seems to work fine until, it is time to deal with negative numbers. How can I fix this. Please put your reply in layman's terms to the best of your ability.
Thanks and God Bless.// COSC 236 Assignment # 3
// YOUR NAME: Anson Castelino
// DUE-DATE:
// PROGRAM-NAME: Assignment # 3 Prt2
//import packages
import java.util.Scanner;
import java.io.*;// FileNotFoundException
public class Assignment3b {
public static void main (String[]args){
Boolean fileOpened = true;
String fileName;
int n,mod=0,sum=0,t=0;
Scanner inputFile = new Scanner(System.in);
System.out.print("Please input the name of the file to be opened: ");
fileName = inputFile.nextLine();
System.out.println();
try {
inputFile = new Scanner(new File(fileName));
catch (FileNotFoundException e) {
System.out.println("--- File Not Found! ---");
fileOpened = false;
if (fileOpened) {
while (inputFile.hasNext()){
if (inputFile.hasNextInt()){
n = inputFile.nextInt();
t=n;
while(n>0){
mod = n % 10;
sum = mod + sum;
n = n/10;
System.out.println ("For number " + t + " the sum of digits is : " + sum);
mod = 0;
sum = 0;
if (n<0) {
System.out.println ("Found an integer (" + t + "), but it is negative. Will ignore!");
inputFile.next();
inputFile.hasNext();
else {
inputFile.next();
}Updated code.
current output is as follows:
Please input the name of the file to be opened: [DrJava Input Box]
For number 12345 the sum of digits is : 15
For number 222256 the sum of digits is : 19
For number -3 the sum of digits is : 0 <-------- this part is not suppose to be here.
Found an integer (-3), but it is negative. Will ignore!
For number -56784 the sum of digits is : 0 <-------- this part is not suppose to be here.
Found an integer (-56784), but it is negative. Will ignore!
For number 6345678 the sum of digits is : 39
For number 81234 the sum of digits is : 18
For number 121212 the sum of digits is : 9
For number 123434 the sum of digits is : 17
For number 1009098 the sum of digits is : 27
For number 2099 the sum of digits is : 20
> -
How the try and catch blocks work?
For the following section of code from the class QueueInheritanceTest...how the try and catch blocks work?
The Class...
public class QueueInheritance extends List {
public QueueInheritance() { super( "queue" ); }
public void enqueue( Object o )
{ insertAtBack( o ); }
public Object dequeue()
throws EmptyListException { return removeFromFront(); }
public boolean isEmpty() { return super.isEmpty(); }
public void print() { super.print(); }
Testing...
public class QueueInheritanceTest {
public static void main( String args[] ){
QueueInheritance objQueue = new QueueInheritance();
// Create objects to store in the queue
Boolean b = Boolean.TRUE;
Character c = new Character( '$' );
Integer i = new Integer( 34567 );
String s = "hello";
// Use the enqueue method
objQueue.enqueue( b );
objQueue.enqueue( c );
objQueue.enqueue( i );
objQueue.enqueue( s );
objQueue.print();
// Use the dequeue method
Object removedObj = null;
try { while ( true ) {
removedObj = objQueue.dequeue();
System.out.println(removedObj.toString()+" dequeued" );
objQueue.print();
catch ( EmptyListException e ) {
System.err.println( "\n" + e.toString() );If you want a basic introduction to try/catch blocks, read any introductory text or the tutorials on this site.
Here are some:
Sun's basic Java tutorial
Sun's New To Java Center.
JavaRanch. To quote the tagline on their homepage: "a friendly place for Java greenhorns."
In terms of this particular case, it looks like the code is using an exception being thrown to get out of a loop. IMHO that's bad design -- exceptions should be used for exceptional circumstances, and if you use it to get out of a loop, then you're certain it's going to happen, and that means that it's not exceptional.
When you post code, please wrap it in tags so it's legible. -
ORA-00001 When I try and create an interactive query/report
Interactive report in APEX 3.2
I have a query like this that does a country lookup
based on the physical address and the mailing address.
The query executes fine through SQL plus but when I try and create
an interactive report I get
ORA-00001: unique constraint (APEX_030200.WWV_FLOW_WORKSHEET_COLUMNS_UK2) violated
Here's the query
select "TAX_VENDORS"."VENDOR_ID" as "VENDOR_ID",
"TAX_VENDORS"."VENDOR_NAME" as "VENDOR_NAME",
"TAX_COUNTRY"."ABBREVIATION" as "ABBREVIATION",
"TAX_COUNTRY_1"."ABBREVIATION" as "ABBREVIATION"
from "TAX_COUNTRY" "TAX_COUNTRY_1",
"TAX_COUNTRY" "TAX_COUNTRY",
"TAX_VENDORS" "TAX_VENDORS"
where "TAX_VENDORS"."PHYSICAL_COUNTRY"="TAX_COUNTRY"."TAX_COUNTRY_ID"
and "TAX_VENDORS"."MAILING_COUNTRY"="TAX_COUNTRY_1"."TAX_COUNTRY_ID"
I've narrowed it down to the double lookup if you will of the country for the
mail/physical address.
Is this not allowed? Is there a work around?Thanks Tony
A closer look at the constraint reveals this - so maybe it's seeing the TAX_COUNTRY_ID twice I would guess where the alias is not accounted for.
CONSTRAINT "WWV_FLOW_WORKSHEET_COLUMNS_UK2" UNIQUE ("WORKSHEET_ID", "DB_COLUMN_NAME")
Your query yielded me the same result
select TV.VENDOR_ID as VENDOR_ID,
TV.VENDOR_NAME as VENDOR_NAME,
TC.ABBREVIATION as ABBREVIATION,
TC_1.ABBREVIATION as ABBREVIATION
from TAX_VENDORS TV
JOIN TAX_COUNTRY TC ON (TV.PHYSICAL_COUNTRY = TC.TAX_COUNTRY_ID)
JOIN TAX_COUNTRY TC_1 ON (TV.MAILING_COUNTRY=TC_1.TAX_COUNTRY_ID) -
Test and trust Class.isInstance or try and catch Class.cast ?
I found this related thread, with no answer to my question.
In the below code, there is a certain level of redundancy in that I am checking that I can do the Class.cast() prior to doing it, via Class.isInstance().
I can either omit the isInstance() check and just count on cast() throwing an exception, or I can ignore the ClassCastException (do nothing in the catch block, as shown below).
Which is better? Is it faster if I just omit the instance check and let cast() detect the errors? Is there a style convention here?
protected <T extends ParentClass> List<T> getItemsOfType(Class<T> clazz){
List<T> retval = new ArrayList<T>();
for(ParentClass t : items.values()){
if(clazz.isInstance(t)){
try{
retval.add(clazz.cast(t));
catch(ClassCastException cce){
// should never happen
}Thanks for your timeDerrick.Rice wrote:
I found this related thread, with no answer to my question.
In the below code, there is a certain level of redundancy in that I am checking that I can do the Class.cast() prior to doing it, via Class.isInstance().
I can either omit the isInstance() check and just count on cast() throwing an exception, or I can ignore the ClassCastException (do nothing in the catch block, as shown below).
Which is better? Is it faster if I just omit the instance check and let cast() detect the errors? Is there a style convention here?Whatever you decide, just keep in mind that there is a semantic difference too:
if(clazz.isInstance(t)) retval.add(clazz.cast(t));will only add instances of the requested class, whereas
try { retval.add(clazz.cast(t)); } catch(ClassCastException e) {} will also add null values. -
Stack that implements try and catch problem
Hi guys, i'm pretty new to java (and programming all together) , have a difficulties with this calculator i'm working on.
I've got a stack which holds for instance 5 + 6 * 2
which equals 17. What i have is:
Stack<String> expression = new Stack<String>(
while(expression.size() >= 2){
String X = new String();
String Y = new String();
X = expression.pop();
System.out.println("popin stack"+X); //debuggin purposes
try {double x = Double.parseDouble(X);
if (X.equals('+')) {
Y = expression.pop();
double y = Double.parseDouble(Y);
String result = Operation.PLUS.eval(x,y);
System.out.println(result);
expression.push(result);
else if (X.equals('-')) {
Y = expression.pop();
double y = Double.parseDouble(Y);
String result = Operation.MINUS.eval(x,y);
System.out.println(result);
expression.push(result);
else if (X.equals('/')) {
Y = expression.pop();
double y = Double.parseDouble(Y);
String result = Operation.DIVIDE.eval(x,y);
System.out.println(result);
expression.push(result);
else {
Y = expression.pop();
double y = Double.parseDouble(Y);
String result = Operation.TIMES.eval(x,y);
System.out.println(result);
expression.push(result);
catch () { }
My idea behinde this was i'd used the try statement
to prevent the element being converted to a double if it isn't a String which this can be done to i.e any integer. I'm not sure if i've gone about this right. And have not idea of what i'm suppose to be catchin i.e the throwable?. Any input/direction would be great, thanks.Hi guys, i'm pretty new to java (and programming all together) , have a difficulties with this calculator i'm working on.
I've got a stack which holds for instance 5 + 6 * 2
which equals 17. What i have is:
Stack<String> expression = new Stack<String>(
while(expression.size() >= 2){
String X = new String();
String Y = new String();
X = expression.pop();
System.out.println("popin stack"+X); //debuggin purposes
try {double x = Double.parseDouble(X);
if (X.equals('+')) {
Y = expression.pop();
double y = Double.parseDouble(Y);
String result = Operation.PLUS.eval(x,y);
System.out.println(result);
expression.push(result);
else if (X.equals('-')) {
Y = expression.pop();
double y = Double.parseDouble(Y);
String result = Operation.MINUS.eval(x,y);
System.out.println(result);
expression.push(result);
else if (X.equals('/')) {
Y = expression.pop();
double y = Double.parseDouble(Y);
String result = Operation.DIVIDE.eval(x,y);
System.out.println(result);
expression.push(result);
else {
Y = expression.pop();
double y = Double.parseDouble(Y);
String result = Operation.TIMES.eval(x,y);
System.out.println(result);
expression.push(result);
catch () { }
} My idea behinde this was i'd used the try statement
to prevent the element being converted to a double if it isn't a String which this can be done to i.e any integer. I'm not sure if i've gone about this right. And have not idea of what i'm suppose to be catchin i.e the throwable?. Any input/direction would be great, thanks.
Edited by: javaUser on Dec 30, 2007 5:59 PM -
I know I posted this quesiton earlier,but I am sitll having problems. In the following code, the exception IS caught if the user enters a String instead of a Int. But the Exception is NOT caught if the user enters
the "Enter" key.
do
flag=false;
//set the quantity to user input
System.out.print("Enter the quantity:");
try
amount = input.nextInt();
if (amount > 0) //executes when amount is less then or equal to zero
flag=false;
} //end of if
else
System.out.println("You must enter a positive quantity");
flag=true;
} //end of try
catch (Exception e)
input.nextLine();
System.out.println("You must enter a number");
flag=true;
}while(flag==true); //end of do while
nextInt won't read "just the enter key"... it blocks until reads "something".
Try something like this instead...
Note: java.io.Console is new in 1.6
package krc.utilz.io;
// usage:
// import krc.utilz.io.Console;
// String name = Console.readLine("Enter your name : ");
// while ( (score=Console.readInteger("Enter a score between 0 and 100 (enter to quit) : ", 0, 100, -1)) != 1) { ... }
import java.util.Date;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
public abstract class Console
private static final java.io.Console theConsole = System.console();
private static final DateFormat dateFormatter = new SimpleDateFormat("dd/MM/yyyy");
public static String readLine(String prompt) {
while(true) {
try {
System.out.print(prompt);
return theConsole.readLine();
} catch (Exception e) {
System.out.println("Oops: "+e);
public static Date readDate(String prompt) {
while(true) {
try {
String response = readWord(prompt+" (dd/mm/yyyy) : ");
return dateFormatter.parse(response);
} catch (Exception e) {
System.out.println("Oops: "+e);
public static String readWord(String prompt) {
String response = null;
while(true) {
try {
response = readLine(prompt);
if( response!=null && response.length()>0 && response.indexOf(' ')<0 ) break;
System.out.println("A single word is required. No spaces.");
} catch (Exception e) {
System.out.println("Oops: "+e);
return(response);
public static char readLetter(String prompt) {
char c = '\0';
while(true) {
try {
String response = readLine(prompt);
if ( response!=null && response.length()>0 ) {
c = response.charAt(0);
if(Character. isLetter(c)) break;
System.out.println("A letter (A through Z) is required. Upper or lower case.");
} catch (Exception e) {
System.out.println("Oops: "+e);
return(c);
public static int readInteger(String prompt) {
int i = 0;
String response = null;
while(true) {
try {
response = readLine(prompt);
if ( response!=null && response.length()>0 ) {
i = Integer.parseInt(response);
break;
System.out.println("An integer is required.");
} catch (NumberFormatException e) {
System.out.println("\""+response+"\" cannot be interpreted as an integer!");
} catch (Exception e) {
System.out.println("Oops: "+e);
return(i);
public static int readInteger(String prompt, int lowerBound, int upperBound) {
int i = 0;
while(true) {
i = readInteger(prompt);
if ( i>=lowerBound && i<=upperBound ) break;
System.out.println("An integer between "+lowerBound+" and "+upperBound+" (inclusive) is required.");
return(i);
public static int readInteger(String prompt, int defualt) {
int i = 0;
String response = null;
while(true) {
try {
response = readLine(prompt);
return (response!=null && response.trim().length()>0
? Integer.parseInt(response)
: defualt
} catch (NumberFormatException e) {
System.out.println("\""+response+"\" cannot be interpreted as an integer!");
} catch (Exception e) {
System.out.println("Oops: "+e);
public static int readInteger(String prompt, int lowerBound, int upperBound, int defualt) {
int i = 0;
while(true) {
i = readInteger(prompt, defualt);
if ( i==defualt || i>=lowerBound && i<=upperBound ) break;
System.out.println("An integer between "+lowerBound+" and "+upperBound+" (inclusive) is required.");
return(i);
public static double readDouble(String prompt) {
double d = 0;
String response = null;
while(true) {
try {
response = readLine(prompt);
if ( response!=null && response.length()>0 ) {
d = Double.parseDouble(response);
break;
System.out.println("A number is required.");
} catch (NumberFormatException e) {
System.out.println("\""+response+"\" cannot be interpreted as a number!");
} catch (Exception e) {
System.out.println("Oops: "+e);
return(d);
public static double readDouble(String prompt, double lowerBound, double upperBound) {
while(true) {
double d = readDouble(prompt);
if ( d>=lowerBound && d<=upperBound ) return(d);
System.out.println("A number between "+lowerBound+" and "+upperBound+" (inclusive) is required.");
public static boolean readBoolean(String prompt) {
while(true) {
try {
String response = readWord(prompt+" (Y/N) : ");
return response.trim().equalsIgnoreCase("Y");
} catch (Exception e) {
System.out.println("Oops: "+e);
} -
Help, try and catch and variables
I have a private vector in one of my objects, i then add some items to it at the beginning of a method, the program then goes into a try/catch block where i add some more variables.
However, the variables i add in the try/catch block only seem to exist within that block.
In another method i refer to the vector again, but it only contains the elements i added before the try/catch block.
Any suggestions?headers = new Vector();
headers.add("String 1");
headers.add("String 2");
connect("database");
System.out.println("Connected");
try
String mySQL = "SELECT * FROM " + table;
Statement st = c.createStatement();
System.out.println("Statement Created");
st.executeQuery(mySQL);
catch (Exception e)
try
StringTokenizer tk = new StringTokenizer(layoutString, "|");
while (tk.hasMoreTokens())
String tmpStr = tk.nextToken();
if (tmpStr.equalsIgnoreCase("ScalePanel"))
String tmp = tk.nextToken();
headers.add(tmp);
headers.add("number");
else if (tmpStr.equalsIgnoreCase("OptionPanel"))
String tmp = tk.nextToken();
headers.add(tmp);
headers.add("varchar(20)");
else if (tmpStr.equalsIgnoreCase("InputPanel"))
String tmp = tk.nextToken();
headers.add(tmp);
headers.add("varchar(20)");
System.out.println("Table Doesn't Exist, creating...");
String mySQL = "create table " + table + " (";
for (int i = 0 ; i < headers.size() ; i++)
if (i == 0)
mySQL += headers.get(i) + " " + headers.get(++i);
else
mySQL += "," + headers.get(i) + " " + headers.get(++i);
mySQL += ");";
Statement st = c.createStatement();
st.execute(mySQL);
catch (Exception ex)
System.out.println("Error while creating table");
System.out.println(ex.getMessage());
disconnect();
I then refer to headers in another method, but it only contains the items before the try/catch. -
Oracle query hints in JPQL - is it possible?
Sorry, posted to wrong forum... I don't know how to delete it - only edit...
Hello,
I am using Sun Java Application Server 9.1 (GlassFish), EJB 3.0 and JPA (TopLink). My database is Oracle.
Is there any way to specify Oracle query hints (for example, /*+ rule */ in JPQL queries? Or the only way to do it is using native queries?
Many thanks in advance
Edited by: Troff_2 on Nov 27, 2007 5:50 AMYes.It is possible.Only need to modify the view for order tracker query need to change.
You can use decode statement in the query to add status as Processing .
Please refer the IBE_ORDER_SUM_V view for details.
Eg:
decode(oel.meaning,'Booked',"Processing",oel.meaning) from
oe_lookups
oel, -
Txt file read in- StringTokenizer- Try Block Catch for errors
Hello
So I am having a few issues with a school project. First is with my ReadWithScanner. It does not read in the file giving me a NullPointerException error on the line <Scanner in = new>. I have tried a few other read in files and they do not seem to be working.
I am also stuck on the logic on the try block catch statement. How does a person set up a �custom� try block that looks for errors like the ones below? I have attempted to start in the commented code.
The text file has to read in 1000 individual lines of code and are separated by �;� and should be separated into tokens with the StringTokenizer class what I attempted to do below also. Both are mere attempts and need help�
This is some what of the logic I thought of doing
1.Read the first line in first with the scanner class
2.use delimiter separated by �;�
3.Tokenizer the line into separate tokens- invoiceCode, fName, lName�
4.Check classes- check Name, check Date, checkPrice, checkPrice, checkGenre, checkShippingDate invoiceCode = "Error Code" checkInvoiceCode(String invoiceCode)checkName(String name), checkPrice(String price), checkGenre(String genre)
5.Apply the regular expressions to each try block statement
a.Assign a letter to each error for example if invoice was to short it would be assigned a letter A
b.If invoice does have the right characters it would be assigned B
c.If name has to few words it would be assigned D
d.�
This is an example of a good field from the text file
XYG726;Smith,Mr. John M.;29.96;comedy;101008;100604
Not so good line
Lu15;Will, Mark;50.00;Science;030305;030807
The file should then be printed out in the program not to a text file. It only needs to print the invoice number and error code letter assignment.
If you have any questions feel free to let me know. Thanks for all or any help you have to offer.
Invoice
Three upper case letters followed by three digits
Regular Expression "[A-Z]{3}[0-9]{3}"
Customer Name
Should be in the form: last name followed by a <,> optional title (Mrs. Mrs�) then first name optional middle initial Titles must be
So regular expression something like �[a-z][A-Z]+([A-Z]{1}?[a-z][./})+[a-z][A-Z]�
Sale Price
Two decimal digits to the left of the decimal point. The price should not have a leading zero.
Regular Expression [0-9]{2}*./[0-9]
Genre
The genre should only contain lowercase letters. Regular expression �[a-z]�
ShipDate and Order Date-
Must be standard dates- MMDDYY. The order date and shipping date has to be after today�s date. Regular expression �[0-9]{2}+[0-9]{2}+[0-9]{2}�
package Project3;
import java.util.StringTokenizer;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import java.io.*;
import java.util.Scanner;
public class ReadWithScanner {
private final File fFile;
public static void main (String args[]){
Scanner in = new Scanner(new File("e:\\work_space_java\\Project\\Package3\\movie.txt"));
Scanner.processLineByLine();
public ReadWithScanner(String aFileName){
fFile = new File(aFileName);
public final void processLineByLine(){
try {
//use a Scanner to get each line
Scanner scanner = new Scanner(fFile);
while ( scanner.hasNextLine() ){
processLine( scanner.nextLine() );
scanner.close();
catch (IOException ex){
protected void processLine(String aLine){
//use a second scanner again to raed the content of each line
Scanner scanner = new Scanner(aLine);
scanner.useDelimiter(";");
if (scanner.hasNext() ){
//read each file?
String name = scanner.next();
String value = scanner.next();
else {
scanner.close();
//Token Names that are seperated
StringTokenizer st;
String invoiceCode = st.nextToken();
String fname = st.nextToken();
String lname = st.nextToken();
String price = st.nextToken();
String genre = st.nextToken();
String orderDate = st.nextToken();
String shipDate = st.nextToken();
String invoiceCode;
invoiceCode = "A" checkInvoiceCode(String invoiceCode);
Pattern p = Pattern.compile("[a-z]{6}[A-Z]{6}[0-9]{6}");
Matcher m = p.matcher(invoiceCode);
p.matcher(invoiceCode);
if(m.matches()) {
System.out.println(invoiceCode);
else {
System.out.println ("A");
try
invoiceCode = Integer.parseInt(String);
catch (NumberFormatException e)
{ System.out.println ("B"); System.exit(1); }
*/I have made a quite a few updates to my code. Please look it over again. I have also made many comments to help with the logic. Once again if you have any questions please feel free to ask. Sorry about not using the tags before- I was no aware of them. Thanks for the advice sabre150.
package Project3;
import java.util.StringTokenizer;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import java.io.*;
import java.util.Scanner;
public class ReadWithScanner {
private final File fFile;
public static void main (String args[]){
//read in text file from directory currently it can not read the file
Scanner in = new Scanner(new File("e:\\work_space_java\\Project\\Package3\\movie.txt"));
//Scans each line of the text in
Scanner.processLineByLine();
//assigns new file name to file
public ReadWithScanner(String aFileName){
fFile = new File(aFileName);
public final void processLineByLine(){
try {
//use a Scanner to get each line from the processLineByLine
Scanner scanner = new Scanner(fFile);
while ( scanner.hasNextLine() ){
processLine( scanner.nextLine() );
scanner.close();
catch (IOException ex){
protected void processLine(String aLine){
//use a second scanner again to read the content of each line
//delmiter should then break each line in the text file into seperate "tokens"
Scanner scanner = new Scanner(aLine);
scanner.useDelimiter(";");
if (scanner.hasNext() ){
//reads each line from scanner
String name = scanner.next();
else {
scanner.close();
/*Convert Tokens from Scanner into String Tokenizer with assigment to each variable
* I am missing something
* Need to convert each line read from the scanner (name variable) to the String
* Tokenizer class
//Tokens names now assigned a varaible
StringTokenizer st;
String invoice = st.nextToken();
String name = st.nextToken();
String price = st.nextToken();
String genre = st.nextToken();
String orderDate = st.nextToken();
String shipDate = st.nextToken();
/*If statments (Try Block Statements?) with Regular Expressions
* This is where I have the most issues on how to set up
* "custom" try and block errors trying to match what I have
* in the regular expressions.
* I believe try and catch statements
* make this easier but I have used 'match' and 'pattern' with if
* statments. If try block statements are easier please show!
* Regular Expressions may not be correct either
invoice = checkInvoiceCode(invoice);
//Defined cerita for Inovice are:
//Error A = Invoice code is too short
//Error B = Invoice code does not have the right characters
//Error C = Invoice code digits are all zero
//Checks for error A
//Has at least six characters
Pattern invoiceShort = Pattern.compile("{6}");
Matcher shortInvoice = invoiceShort.matcher(invoice);
p.matcher(invoiceCode);
if(m.matches()) {
System.out.println(invoice);
else {
System.out.println ("A");
//Checks for error B
//3 Upper Case Letters followed by three numbers,
Pattern rightChar = Pattern.compile("[A-Z]{3}[0-9]^0{3}");
Matcher charRight = rightChar.matcher(invoice);
p.matcher(invoiceCode);
if(m.matches()) {
System.out.println(invoice);
else {
System.out.println ("B");
//Checks for error C
//Where the last three digits are not all zeros
Pattern notZero = Pattern.compile("*{3}^0{3}");
Matcher ZeroNot = notZero.matcher(invoice);
p.matcher(invoiceCode);
if(m.matches()) {
System.out.println(invoice);
else {
System.out.println ("C");
//name = checkFullName(name);
//Error D = Name field has fewer than two words
//Error E = Name field has more than four words
//Error F = Name field has no comma
//Error G = Name field has a bad title
//Error H = Name field has a bad initial
/*Have a lot more to do...
* Still need to go through the same if statement or Try Block statements with this data:
* String fname = st.nextToken();
String lname = st.nextToken();
String price = st.nextToken();
String genre = st.nextToken();
String orderDate = st.nextToken();
String shipDate = st.nextToken();
* But for now I would like to see an example of an if statement I could use
* (if mine is even right) or catch statement- the rest of the project we look
* for similar certia as defined in the reg exp for invoice
/*Writes to Report in the Console
* Prints data into two columns:
* Invoice Code and Error Type
//Prints both column Headings
private void columnHeadings ()
System.out.println (padL("",5) +
padL("Invoice",20) +padL("",20)+
padL("Error Code",40));
//movie is the name of the text file
private void printMovie(Movie aReport) {
System.out.println(aReport.getInvoiceCode()+"\t"+
aReport.getErrorType()+"\t");
*This method pads the string start to the length newLength leaving the
*string left justified and returning the result.
private String padL (String start, int newLength)
String result = new String (start);
while (result.length() <= newLength) result += " ";
return result;
} // end padL
* This method pads the string start to the length newLength leaving the
* string right justified and returning the result.
private String padR (String start, int newLength)
String result = new String (start);
while (result.length() <= newLength) result = " " + result;
return result;
// end padRThanks a lot. -
The tutorial says no code is allowed between try and catch blocks, but one of the examples given has a return statement between try and catch blocks.
Why is this ( [one of the answers from the tutorial|http://java.sun.com/docs/books/tutorial/essential/exceptions/QandE/answers.html] ) OK?
public static void cat(File file) {
RandomAccessFile input = null;
String line = null;
try {
input = new RandomAccessFile(file, "r");
while ((line = input.readLine()) != null) {
System.out.println(line);
return; //<--- Why is this code legal?
} catch(FileNotFoundException fnf) {
System.err.format("File: %s not found%n", file);
} catch(IOException e) {
System.err.println(e.toString());
} finally {
if (input != null) {
try {
input.close();
} catch(IOException io) {
Just want to understand the unstated exception to these cases.
Thanks,
David Yorke
FNGYou're reading it wrong.
try {
input = new RandomAccessFile(file, "r");
while ((line = input.readLine()) != null) {
System.out.println(line);
} // end of while loop
return; //<--- Why is this code legal?
// legal because it's still inside the try block
} // end of try block
catch(FileNotFoundException fnf) {
System.err.format("File: %s not found%n", file);
catch(IOException e) {
System.err.println(e.toString());
finally {
if (input != null) {
try {
input.close();
catch(IOException io) {
} -
Some diffrence in oracle query and mysql query
sir i see both query in SessionBean1
mysql query
SELECT ALL usert.username,
usert.userid,
usert.camid FROM usert
this not use user name
oracle query
SELECT ALL MFA.LUSER.USERID,
MFA.LUSER.TITLE,
MFA.LUSER.CAMPID,
MFA.LUSER.PWD,
MFA.LUSER.USERNAME
FROM MFA.LUSER
the user name mfa is use in this query you can see
this is main diffrence
but i yse both in code but not get result
try {
RowKey userRowKey = luserDataProvider.findFirst
(new String[] { "MFA.LUSER.USERNAME" },
new Object[] { textField4.getText()});
if (userRowKey == null) {
textField3.setText("11111");
return null;
} else {
textField3.setText("22222");
return null;
catch (Exception e) {
log("Cannot perform login for userid " + textField3.getText(), e);
error("Cannot perform login for userid " + textField3.getText() + ": " + e);
textField3.setText("77777");
return null;
problem in only oracle not in mysql
please give me idea how i get result
thank youcan you post your query with explain plan for both 9i version and 10g version.
Thanks,
karthick.
Maybe you are looking for
-
There appears to be a MAJOR issue (hang/memory leak) in "about:home", also known as the Firefox Start Page, in Firefox 26.0, on Windows! observed on: - Windows 7 x64 machine with 12GB RAM and high-performance CPU (core i7-920) - Virtual Machine guest
-
Hyperion Strategic Finance - Smart View - Submitting Data
Hello, I have a model which I started developing using the client, then used Smart Views to continue. I don´t know if I have some settings wrong because whenever I try to input data, then submit or calculate, nothing happens. The cell turns yellow, a
-
DropdownListBox with TIME field
I have a dropdown list box which displays a list of valid times, with the value read from the database as the selected value. This format works fine (ex: '080000'): <htmlb:dropdownListBox id = "startTimeBeg"
-
IDSM-2 Join windows domain problem
We are running a IDSM-2 module in a 6509 with vlan inline interface pairs. Everything looks fine until we try to join a server to the 2003 domain. I can't see the IPS dropping anything, but we get "network path not found" after entering the credentia
-
the following error puzzles me when I start proc: Syntax error at line 368, column 19, file /usr/include/libio.h: Error at line 368, column 19 in file /usr/include/libio.h extern IOsize_t IOsgetn __P ((_IO_FILE *, void *, IOsize_t)); ................