Java atomicinteger with example
What is meant by atomic Atomic means a single unit. In terms of execution, an if an operation consists of multiple steps then it is said to be atomic when…
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 a key, current timezone, user logged time etc. but you…
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 you do that? Using constructor When an object of a…
CyclicBarrier in java
Imagine a seminar which will start only when a certain number of attendees(say, 5) have arrived. If asked, how would you achieve this in a java program. The answer is…
Java countdownlatch with example
Suppose you have 5 threads out of which 1 is a main thread and other 4 are threads that perform some task. Now you want the main thread to proceed…
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 might want to change the page on click of a…
How to reverse a string in java
Reversing a string means arranging the characters of a string in reverse order, that is, placing last character as first, second last character as second and so on. Example of…
throw and throws in java
throw and throws are the keywords in java which are related to the concept of exception handling in java. This post will explain the meaning and use of these keywords…
Exception handling in java
What is exception Exception is an unexpected and undesirable condition that occurs during program execution. Example, you are trying to fetch data from a database table. Connection to the database…