Question: Do I have to use this keyword in Java?

The only need to use the this. qualifier is when another variable within the current scope shares the same name and you want to refer to the instance member (like William describes). Apart from that, there’s no difference in behavior between x and this. x . Is this keyword necessary in Java? The this keyword …

Read more

Categories JS

Best answer: What are MySQL clients?

What are the MySQL clients? MYSQL Client are programs for communicating with the server to manipulate the information in the databases that the server manages. Example : mysql is the command line program that acts as a text-based front end for the server. What is the best client for MySQL? 10 Best MySQL GUI Tools …

Read more

Categories JS

What is JavaScript function syntax?

What is the syntax of JavaScript function? JavaScript Function Syntax A JavaScript function is defined with the function keyword, followed by a name, followed by parentheses (). Function names can contain letters, digits, underscores, and dollar signs (same rules as variables). What is function syntax? Arguments typically have some restrictions on the expression used for …

Read more

Categories JS

How do I retrieve a single record in SQL?

How do I select a single record in SQL? While the table name is selected type CTRL + 3 and you will notice that the query will run and will return a single row as a resultset. Now developer just has to select the table name and click on CTRL + 3 or your preferred …

Read more

Categories JS

Frequent question: Where clause is null in SQL Server?

Is NULL in WHERE clause in SQL Server? Example – With SELECT Statement For example: SELECT * FROM employees WHERE last_name IS NULL; This SQL Server IS NULL example will return all records from the employees table where the last_name contains a null value. IS NULL check in WHERE clause? Generally, NULL data represents data …

Read more

Categories JS

Why are we using Java Net package?

The java.net package allows you to do low-level networking with DatagramPacket objects, which may be sent and received over the network through a DatagramSocket object. As of Java 1.1, the package has been extended to include a MulticastSocket class that supports multicast networking. What is the Java net package? Java.net is a package that provides …

Read more

Categories JS

You asked: What are any drawbacks or downsides to using TypeScript?

What are the pros and cons of using TypeScript? TypeScript vs JavaScript comparison TypeScript Type system Static typing, strongly typed (optionally) Advantages Easier to debug, quicker development Disadvantages More initial setup, additional learning on top of JavaScript required Support Easily supports new features even on ES3 compatible browsers Why you should not use TypeScript? TypeScript …

Read more

Categories JS

Quick Answer: What is the use of Strstr in PHP?

The strstr() function is a built-in function in PHP. It searches for the first occurrence of a string inside another string and displays the portion of the latter starting from the first occurrence of the former in the latter (before if specified). This function is case-sensitive. What does Strstr mean? The strstr() function searches the …

Read more

Categories JS

Can JSON array null?

JSON has a special value called null which can be set on any type of data including arrays, objects, number and boolean types. Can JSON array have null values? Each element is initialized to the JSON null value. If this value is 0, the array is empty. If this value is less than 0 or …

Read more

Categories JS

What is convert function in SQL?

In SQL Server (Transact-SQL), the CONVERT function converts an expression from one datatype to another datatype. If the conversion fails, the function will return an error. Otherwise, it will return the converted value. TIP: Use the TRY_CONVERT function to return a NULL (instead of an error) if the conversion fails. What is conversion function? Conversion …

Read more

Categories JS