Emailing Error Logs
Feb 2, 2014
I've been working on a lesson in logging in Java, formatting in XML. I'm trying to add an appender to e-mail the error log, but can't seem to get it to work. Is there a piece I'm missing? The rest of my appenders are working fine. The error I get is that it cannot create an appender of this type. The console also seems to think that I defined the appender after I call for it, but it is above. Here is what I put together:
<appender name="EMAIL" class="ch.qos.logback.classic.net.SMTPAppender" >
<filter class="ch.qos.logback.classic.filter.LevelFilter">
<level>ERROR</level>
<onMatch>ACCEPT</onMatch>
<onMismatch>DENY</onMismatch>
</filter>
<SMTPHost>${smtpHost}</SMTPHost>
[code]....
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Feb 2, 2014
I've been working on a lesson in logging in Java, formatting in XML. I'm trying to add an appender to e-mail the error log, but can't seem to get it to work. Is there a piece I'm missing? The rest of my appenders are working fine. The error I get is that it cannot create an appender of this type. The console also seems to think that I defined the appender after I call for it, but it is above. Here is what I put together:
<appender name="EMAIL" class="ch.qos.logback.classic.net.SMTPAppender" >
<filter class="ch.qos.logback.classic.filter.LevelFilter">
<level>ERROR</level>
<onMatch>ACCEPT</onMatch>
<onMismatch>DENY</onMismatch>
</filter>
[Code] ....
And then call it within the logger:
<appender-ref ref="EMAIL" />
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Mar 4, 2014
I have the following code that comes directly from the book Core Java vol 1. The last two statements are mine but when I change the last statement's String the message being logged doesn't change. For that manner when I change the level of the last statement the file doesn't update to the correct log level. What am I doing wrong?
Java Code:
public class LogTester
{
public static void main(String[] args)
{
if (System.getProperty("java.util.logging.config.class") == null
&& System.getProperty("java.util.config.file") == null)
[code]....
Forgot to say the file also only logs the old message and level from a previous recompilation
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Nov 26, 2013
In my applications garbage collection logs, I see below line.
2013-11-26T10:35:45.050-0500: 5195.298: [GC 5195.298: [DefNew: 17430K->456K(19136K), 0.0102408 secs] 796185K->779211K(2668480K), 0.0103687 secs] [Times: user=0.01 sys=0.00, real=0.01 secs]
2013-11-26T10:36:10.593-0500: 5220.840: [GC 5220.840: [DefNew: 17480K->398K(19136K), 0.0100548 secs] 796235K->779153K(2668480K), 0.0101835 secs]
The last line seems half cut. Does that indicate that there is memory leak in my application? I have not seen the app throwing the out of memory error.
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Dec 1, 2014
I am new to java coding. so, reading the log file using java code.
1) I wish to parse a file, and find a value for variable e.g. [StorageVersion].
2) After finding the value, it will be pushed to database.
Following is the code that i have written till now.
import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;
import java.io.*;
import java.lang.*;
import java.util.*;
import java.util.regex.*;
[code]....
1) I don't know what regular expression can i use.
2) I want a line to check that preceding line should have //StorageVersion .
3) n then i will check any string between := K[' and '];. From above log file "'706146.0.22106932'" is the value that i am looking for.
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Apr 16, 2013
I keep getting an error in my browser:
java.lang.IllegalArgumentException: argument type mismatch
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:324)
[Code] .....
I see the file "myApache.log" got created but there's no info in it when i re-test the error, I have other existing appenders and categories in this same file which do give output so I know it has nothing to do with the file or the path itself.
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Feb 1, 2013
Previous page can be seen even after user logs out from the JSP page.
My code is:
Logout.jsp:
<%@page contentType="text/html" pageEncoding="UTF-8"%>
<html>
<head>
<title>JSP Page</title>
[Code] ....
how to resolve this?
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May 22, 2014
For my jsp file, the code editor shows no error, but the projects window shows an error. I built my project again, cleaned the project, restart eclipse twice and summoned cthulhu. But my project still shows an error. How do I find the cause.
Eclipse project -
JSP file -
<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<%@ taglib prefix="mine" uri="DiceFunctions"%>
[Code] ....
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Apr 5, 2014
I have written some error checking code
File name ErrorPage.jsp
<%@ page language="java" isErrorPage="true" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Error</title>
</head>
[code]...
I have put error.jsp and badpage.jsp file in public access folder that is web content in eclipsewhen I am running the code I am status code of 500 and not the errorpage.jsp message .
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Mar 24, 2015
I need to compile a JAVA code to call a web service. The web service provider gave me this sample code, but compiling with javac i have one error for each row of code.
Code attached!code.txt
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Oct 10, 2014
import java.util.Scanner;
public class Pract3CQ2 {
public static void main(String [] args) {
Scanner keyboardIn = new Scanner (System.in);
//Declare variables
int a=20, b=10, diff;
[Code] ......
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Dec 31, 2014
here is code :
public final static void main(String[] args){
double d = 10.0 / -0;
if(d == Double.POSITIVE_INFINITY)
System.out.println("Positive infinity");
else
System.out.println("Negative infinity");
}
now ideally this might throw Arithmetic Exception.. but it prints positive infinity ,.. why.. ??
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Oct 23, 2014
I am getting a NullPointerException Error and I cannot seem to figure out what is causing it. I am reading in a grades1.dat text file and putting the values into a 2D array. The error is occuring in my addGrade method, but I am not sure what the error is. Here are the values for my grades1.dat that I am running in through Run Arguments in JGRASP.
Student1
5
a Activities 0.05
q Quizzes 0.10
p Projects 0.25
e Exams 0.30
f Final 0.30
a100 a95 a100 a100 a100
q90 q80 q100 q80 q80 r90
p100 p95 p100 p85 p100
e77.5 e88
f92
Here are the errors that I am getting.
Exception in thread "main" java.lang.NullPointerException
at GradeBook.addGrade(GradeBook.java:114)
at GradeBookApp.main(GradeBookApp.java:55)
import java.util.Arrays;
/**
* Stores students name, a char array of category codes, a String array of categories, a double array of category weights, and a two dimensional double array of grades where each row contains all the grades in a particular category.
[code]....
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Jun 16, 2014
Im trying to connect to sql server but i get this error
2014 7:03:38 ΜΜ com.microsoft.sqlserver.jdbc.SQLServerConnection Prelogin
WARNING: ConnectionID:1 ClientConnectionId: 8ee72721-9ec7-41e2-9f57-ebc16d958073 Prelogin error: host localhost port 3306 Unexpected response type:74
url = "jdbc:sqlserver://localhost:3306;user=root;password=root;database=test";
When i try to connect with mysql workbench i connect succesfully.
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Oct 1, 2014
I am having a error in progress bar ... I want to see the progress upon checking the sha1 of files
This is the code:
/*
* To change this license header, choose License Headers in Project Properties.
* To change this template file, choose Tools | Templates
* and open the template in the editor.
*/
package program1;
//Import packages
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
[Code] .....
This is the error
Exception in thread "Thread-2" java.lang.NullPointerException
at program1.ProgressBar$thread1.run(ProgressBar.java:98)
at java.lang.Thread.run(Thread.java:744)
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Oct 27, 2014
So I am working on a school project and I have 2 classes, class FakeGravity contains all the properites and class BouncyBall is my driver class. For some reason when I try writing
FakeGravity gravity = new FakeGravity( );
I get an error. I am attaching an image of the error, and also attaching the program just in case you need more information. Also I was using blueJ to write the program
dcasarrubias, on 27 October 2014 - 02:44 PM, said:
So I am working on a school project and I have 2 classes, class FakeGravity contains all the properites and class BouncyBall is my driver class. For some reason when I try writing
FakeGravity gravity = new FakeGravity( );
I get an error. I am attaching an image of the error, and also attaching the program just in case you need more information.
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Dec 12, 2014
I am getting the following error:
Exception in thread "main" java.util.MissingFormatArgumentException: Format specifier '.2f'
The line it is referring to is:
System.out.println("
Toppings: ");
for (int i = 0; i < toppings.size(); i++) {
System.out.format("%-15s£%.2f
",BBQSpecial.getToppings().get(i)
.name(), BBQSpecial.getToppings().get(i).getCost());
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Nov 5, 2014
package calculator;
public class operations {
int a = 5;
int b = 10;
public void add(int a,int b)
{
int c = a+b;
System.out.println(c);
}
}
I am not getting output to this question though it runs.
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May 12, 2014
I am using netbeans 7.2, glassfish 3.1.2, JSF 2.1 and Primefaces 3.2. When I add more than three menu tabs, I get this error ui layout initialization error the center-pane element does not exist the center-pane is a required element. This is my template.xhtml code:
<?xml version='1.0' encoding='UTF-8' ?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:ui="http://java.sun.com/jsf/facelets"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:p="http://primefaces.org/ui">
[Code] ....
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Jul 23, 2014
I have written the below program and while compiling i am getting error. The program and error details goes as follows,
//compute distance of light travels using Java long variable.
class Light {
public static void main(String args[]) {
int lightspeed;
long days;
long seconds;
long distance;
[code]....
I have given the Java file name as 'Light.java'. I have also verified the availability of the java file and compilation path. both are matching. Also, Java file name and class name defined are also same.
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Feb 17, 2014
So I am finishing up a GUI that randomly rolls a dice and shows you the dice face from a file that I have on my computer. It compiles fine, but when I open the GUI and press the button "Roll" it gives me errors and does not display the images.
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.border.*;
import java.util.Random;
[code]....
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Mar 14, 2014
import java.io.*;
public class Q2{
public static void main (String[] args) throws IOException,
ClassNotFoundException
[code]....
For this program, i successfully did create an output.txt, but i have some weird characters in front of "hello" when i open it in notepad or wordpad.
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Mar 11, 2014
I'm very new to java code I'm currently learning about loops I've tried to write this for a statement in the program I'm making but its not working. I keep getting this message
LoanQualifier.java:26: error: illegal start of expression
if (salary >0||<=250000)
^
LoanQualifier.java:28: error: illegal start of type
if (yearsOnJob >0||<50)
I'm using Jgrasp for a complier
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Aug 6, 2014
I am trying to copy all odd value of an array in one array and all even value in another array
this what i have try to so far
private static void arrayOperation(int[] a) {
// TODO Auto-generated method stub
int n=a.length;
int odd_value[] = {};
[Code].....
But i am getting error
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Jan 14, 2015
I am pretty new to Java and I am working on a sample Search code from my textbook. I can't figure out why I am getting the following error because I copied the sample exactly as it is in the book. The error is illegal start of expression on the second to last line.
public class Search {
public static final int NOT_FOUND = -1;
public static int binarySearch( int [] a, int x )
{
int low = 0;
int high = a.length - 1;
int mid;
[code]....
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Apr 28, 2009
Here is the code I am trying to execute its giving me the error with TextReader..
import java.io.*;
import java.util.*;
public class WordCount {
static TextReader in; // An input stream for reading the input file.
static PrintWriter out; // Output stream for writing the output file.
[Code] .....
The error is:
C:
eha>javac WordCount.java
WordCount.java:20: cannot find symbol
symbol : class TextReader
location: class WordCount
static TextReader in; // An input stream for reading the input file.
[Code] .....
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