MySQL inner join with example
What is a join In a real world application, data resides in multiple tables and often you need to fetch…
4 Min Read
How to use local storage in javascript
What is local storage Often you need to maintain a small amount of data for a web application such as…
1 Min Read
How to count the number of objects of a class in java
Suppose you want to know how many objects of a class have been created during a program execution. How would…
1 Min Read
Redirect to URL in javascript
Many times you want to load a web page from your application. You can create a hyper link but you…
2 Min Read
How to compare strings in javascript / 3 ways of string comparison in javascript
String comparison is a necessary operation required in every application and is used to determine if two string values are…
2 Min Read
How to check if a string is null or empty in java / 3 ways to check for a null or empty string in java
String is the most commonly used data type in java. Often you need to perform operations on a string but…
1 Min Read
How to get current url in javascript
Sometimes on a button click or any other event, you need to get the current URL of the browser window….
2 Min Read
How to check if file exists in python / 4 ways to check if file exists in python
Many times a program tries to read from a file but the file has been removed or deleted from its…
4 Min Read
How to list all files in a directory in python
Many times we need to create a searching utility program which when provided a directory path lists all the files…