Introduction to Ajax

Ajax is not a programming language. It is combination of java script and xml, so we can say say that ajax = java Script+xml. In another word,Ajax means, Asynchronous java script and xml, and this is  made popular in 2005 by Google suggest [Google search, while we are typing some thing in Google search box it will show you some suggestions automatically right that is Ajax] What we can do with AJAX With the help of AJAX we can move the...

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Why doesn't a hash table allow null key and value, and why does Hash Map allow one null key and values?

Hello dude !  today we will talk about why HashTable doesn't allow key-value as a null while HashMap does??.........so lets go without wasting the time 😇😇😇. We will discuss here this whole content into two parts. First we talk about HashTable then will come over HashMap. So lets down with HashTable 😇😇😇😇😇....... HashTable -  java.util.Hashtable Hashtable is a class which came with the first version of java. When it was released...

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Use of WHERE Clause

In relational database system,WHERE clause is used to filter the records or data. In other way you can say that, WHERE clause fetch those records only which full fill the specific condition. WHERE clause Syntax SELECT column1, column2, ... FROM table_name WHERE condition; Here SELECT column1 , column2, ... : is standard SELECT statement which is used to select the required number of columns. It may be up to N number of columns depends on...

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How to install Google Chrome

For installing Google Chrome in your Ubuntu system, you have need to follow some following steps. STEP 1 : Execute the following commands- cd /tmp wget https://dl.google.com/linux/direct/google-chrome-stable_current_amd64.deb sudo dpkg -i google-chrome-stable_current_amd64.deb The 32-bit version is no longer available. During execution of above commands if you get any errors, please follow step 2 else skip it. STEP 2 : Execute in case of error...

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