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Kara Hewett · Aug 29 '16, 08:56 PM

The initial code example is not vulnerable to SQL injection because it correctly uses parameterized queries. By using java's PreparedStateme nt class, bind variables and corresponding string methods, SQL injection can be easily prevented. The second example uses dynamic queries to concatenate potentially malicious data. The second example doesn't bind parameters and values therefore injection can occur within the string.

Kara Hewett · Aug 29 '16, 08:50 PM

Sang Sing offers excellent courses that are good study material for the java certification exams. http://www.jpassion.com/portal/ His classes used to be free, but now he charges a small fee. He really offers a broad range of classes, good exercises and quality instruction.

Kara Hewett · Aug 4 '16, 02:15 PM

select * from tblstudent a, tbllang b, tblstudlang c
where a.studentid = b.studentid and
b.languageid = c.languageid

The three tables are given an identifier such as a, b, and c. Then the tables are joined on the column which is shared between the tables.

Kara Hewett · Jul 22 '16, 01:35 PM

Spring, Github and Java integrate well as open-source technologies for an internet application. Spring handles customization of the database, json, and jsps through xml configuration files. Java integrates flexibly with json, java server faces and jsps for web applications. Github is free open source repository.

Kara Hewett · Jul 9 '16, 01:23 AM

The SDLC or Software Development Life Cycle defines the essential stages of project mangaement. The SDLC adheres to important phases that are essential for developers, such as planning, analysis, design, and implementation, and are explained in the section below. It includes evaluation of present system, information gathering, feasibility study and request approval. A number of SDLC models have been created: waterfall, fountain, spiral, build and...

Kara Hewett · Jun 23 '16, 01:28 PM

Could you please provide more information about your requirements? How many users? How computationally intensive is the business analysis? What is your budget for a DBMS? What operating system are you using for the DBMS host? Many good DBMS exist, and many factors determine a choice of DBMS.

Kara Hewett · Jun 23 '16, 01:12 PM

400 Bad request Error will cause due to authentication entries has incorrect.

Check your API URL is correct or wrong. Don't leave any spaces front or at end.
check your username and password are valid one. Please check any spell mistake while entering.

Note: Mostly due to Incorrect authentication entries due to spell changes will occur 400 Bad request.

Kara Hewett · Jun 16 '16, 01:01 PM

What version of python are you using? Range and enumerate function differently in different versions of python

Kara Hewett · Jun 15 '16, 07:12 PM

You don't identify the static versus non-static methods except that the java main function is static by design. If you are calling the Product class within the java main function, then that could be a problem. Try making Product a standalone class such as Product.java. Then in the java static main method instantiate the class, e.g. Product p = new Product();

Kara Hewett · Jun 15 '16, 07:09 PM

You can also use Task Scheduler on a Windows Server and kill any java program which is running on that server.

Kara Hewett · Jun 15 '16, 06:54 PM

A few popular java caches are Java Caching System by Apache at commons.apache. org/jcs and Ehcache at www.ehcache.org.

Kara Hewett · Jun 15 '16, 06:51 PM

Did you add the jar SNMP4J to WEB-INF/lib?

Kara Hewett · Jun 15 '16, 06:49 PM

A thread is a thread of execution in a program. The Java Virtual Machine allows an application to have multiple threads of execution running concurrently.

Every thread has a priority. Threads with higher priority are executed in preference to threads with lower priority. Each thread may or may not also be marked as a daemon. When code running in some thread creates a new Thread object, the new thread has its priority initially set equal...

Kara Hewett · Sep 4 '15, 03:41 PM

Here we need to create a string with a line break in the middle of it, which will form a two-line string. We will use the Environment.New Line constant for this, which is defined by the .NET Framework and could vary by platform.Based on: .NET 4.5

C# program that uses Environment.New Line

Code:

using System;

class Program
{
    static void Main()
    {
	//
	// Use string concat to combine

...

Kara Hewett · Aug 31 '15, 08:15 PM

The jvm engine calls the paint method every time the operative system reports that the canvas has to be painted. When the window is created for the first time, paint is called by the JVM. The paint method is also called if we minimize and after we maximize the window and if we change the size of the window with the mouse.

Kara Hewett · Aug 31 '15, 07:20 PM

The getCharacter.ge tCharacter function should return a Dictionary<stri ng,string> not a string. Then the code will work.

Code:

class getCharacter
    {

         public Dictionary<string, string> getCharNow()
         {
             string fldr = "c:\\temp\\character.txt";
            // fldr = Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments) + fldr;

...

Kara Hewett · Aug 31 '15, 06:02 PM

A few problems could cause the if(item.selecte d) line to not be hit:

1. The code snippet doesn't demonstrate where fromListBox is initialized with values.
2. The data type is not correctly identified. Perhaps use a var type such as

foreach (var item in fromListBox.Ite ms)
{
if (item.Selected) selected.Add(it em);
}

Kara Hewett · Nov 26 '14, 04:25 PM

Does the project use ODBC? If it uses ODBC, then please ensure that the ODBC connection has been created for the database.

Kara Hewett · Nov 26 '14, 04:20 PM

You can handle the PreviewMouseUp event to catch the moment when the user clicks on a column header:

[C#]

Code:

private void view_PreviewMouseUp(object sender, System.Windows.Input.MouseButtonEventArgs e) {
    TableViewHitInfo info = view.CalcHitInfo((DependencyObject)e.OriginalSource);
    if (info.InColumnHeader) {
        MessageBox.Show(info.Column.FieldName);
    }
}

...

Kara Hewett · Nov 25 '14, 02:01 PM

Hi

HtmlAgilityPack and regular expressions can be used to parse HTML very effectively. HTML can be formatted using "classes". You can then parse on the class such as:

XPathValues = "//table[@class='c123']//tr/td";
HtmlDocument doc = doc.DocumentNod e.SelectNodes(X PathValues);

http://htmlagilitypack.codeplex.com/...

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