getOrDefault is a useful method that we can use on map s in Java. We give two arguments here. The fi ... Read More
We can create temporary files in Java like in the code below Here first argument is the name ... Read More
If we have two classes Dog(parent) and Labrador(child) as below ``` public class Dog { ... Read More
Collections lie in java.util package * ArrayList and LinkedList extend List Interface. * And Li ... Read More
Below is the req expression to match 5 digits and then we put () and inside those braces we put - t ... Read More
Wrapper Classes are used to convert from primitive data types to objects or vice versa Example i ... Read More
``` try { // To get File metadata or File attributes. i.e file size , last modified da ... Read More
The below command is used to return a unmodifiable list,map or set which can't be modified so origin ... Read More
Quantifiers are used to replace how many times a character is present in the String ``` Str ... Read More
* We know that Buffered reader and writers read and write data in big chunks * Byte Streams can be ... Read More