Hey there! Welcome to ClearUrDoubt.com. In this post, we will look at a Java program to create a JSON file using JSON-simple API. JSON-simple API is used to create and read JSON files in a simple way. Maven dependency for Read more
Hey there! Welcome to ClearUrDoubt.com. In this post, we will look at the introduction of Functional Interfaces and Lambda Expressions in Java 8. One of the great updates in Java 8 is the addition of Lambda Expression support. Functional interfaces are Read more
Hey there! Welcome to ClearUrDoubt.com. In this post, we will look at the demonstration of Optional<T> class in Java 8. Optional is introduced in Java 8 mainly to provide a way to avoid Null Pointer Exceptions in the code. Instead of directly Read more
Hey there! Welcome to ClearUrDoubt.com. In this post, we will look at formatting dates in Java 8. Using DateTimeFormatter, which was introduced in Java 8, we can format the date strings in a simple way. Let’s look at a sample program: Read more
Hey there! Welcome to ClearUrDoubt.com. In this post, we will look at removing nulls from an ArrayList in Java 8. Using Stream API, which was introduced in Java 8, we can remove null values from an ArrayList in a simple way. Read more
Hey there! Welcome to ClearUrDoubt.com. In this post, we will look at a program to demonstrate default methods in Interfaces in Java 8. Default methods are introduced in Java 8 to provide a default implementation for methods in an Interface. Using Read more
Hey there! Welcome to ClearUrDoubt.com. In this post, we will look at a program to remove duplicates from a List. Removing duplicate primitive and String values from List is a bit easy. We can use “Set” collection to remove the duplicates(if Read more
Hey there! Welcome to ClearUrDoubt.com. In this post, we will look at a Spark(2.3.0) Program to load a CSV file into a Dataset using Java 8. Please go through the below post before going through this post. Program to load a Read more
Hey there! Welcome to ClearUrDoubt.com. In this post, we will look at a program to load a text file into a Dataset in Spark(2.3.0) using Java 8. Check out the below classes/concepts before going through the program: static org.apache.spark.sql.functions.col org.apache.spark.sql.Dataset org.apache.spark.sql.Row Read more
Hey there! Welcome to ClearUrDoubt.com. In this post, we will look at the WordCount program in Spark using Java 8. Before going through the below program, it’s better to look into below concepts for a better understanding of the program: org.apache.spark.api.java.JavaRDD org.apache.spark.api.java.JavaPairRDD Read more