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Category Archives: Java

Gallery app is one of the most used apps which comes pre-installed on many android devices and there are several different apps that are present… Read More
In certain cases, while uploading files we may require to upload files from our google drive or it may happen that we want to give… Read More
We have seen android app comes with two different types of mode or theme which are dark mode or light mode or we also called… Read More
There are many situations that come when we have to change the functionality of the output as well as the type of output according to… Read More
While doing problems in various coding platforms in some questions we end up with (TLE). At that point of time even if we use fast… Read More
In java if a thread doesn’t want to perform any operation for a particular amount of time then we should go for the sleep() method,… Read More
Inheritance, as we have all heard is one of the most important features of Object-Oriented Programming Languages whether it is Java, C++, or any other… Read More
Every class in Java has a unique lock which is nothing but class level lock.  If a thread wants to execute a static synchronized method,… Read More
Every object in java has a unique lock. Whenever we are using a synchronized keyword, then only the lock concept will come into the picture.… Read More
Filter pattern or Criteria pattern is a design pattern that enables developers to filter a set of objects using different criteria and chaining them in… Read More
Wrapper Class a class whose object wraps or contains primitive data types. When we create an object to a wrapper class, it contains a field… Read More
A positive integer with digits p, q, r, s…, is known as an Armstrong number of order n if the following condition is fulfilled. pqrs...… Read More
For a given number N, the purpose is to find all the prime numbers from 1 to N. Examples:   Input: N = 11 Output:… Read More
The Determinant of a Matrix is a real number that can be defined for square matrices only i.e, the number of rows and columns of… Read More
The Period Class in Java class obtains a quantity or amount of time in terms of years, months and days. The time obtained is a… Read More

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