Code in your method may throw exceptions that your method doesn’t handle. In that case you need to specify those exceptions along with the method declaration. That way calling method can provide exception handling mechanism for those exceptions. To specify the exceptions in your method declaration you can use throws…
In this post we’ll see some of the differences between checked and unchecked exceptions in Java. Before going into checked exception Vs unchecked exception let’s try to understand which exception classifies as a checked exception and which one as unchecked. Table of contents Checked exception in Java Unchecked exception in…
In this tutorial we’ll see how to use Java Stream sorted() method with the help of few examples. Table of contents Syntax of sorted() method in Java Stream API Sort List of integers in natural order Sort List of integers in reverse order Sort List of Strings Sorting List of…
Java Stream distinct() method is used to get the distinct elements of the stream. It means this method filters out the duplicate elements. Syntax of the distinct method Syntax of the distinct() method in the Java Stream API is as given below- Stream<T> distinct() 1. Method returns a new stream…
In this tutorial we’ll see examples of Collectors.partitioningBy() method which is part of the Collectors class in the Java Stream API. Collectors.partitioningBy() method partitions the input elements according to a passed Predicate (which defines the condition for partitioning), and organizes them into a Map<Boolean, List> with values assigned to two…
In this tutorial we’ll see how to use Collectors.teeing() method which is added in Java 12 to the Collectors class in the Java Stream API. Collectors.teeing() method The teeing() method let you create a composite of two Collectors and there is also a third argument; a merging function. Every element…
In this post we’ll see a Java program to merge PDFs using PDFBox library. To know more about Apache PDFBox library and PDF examples in Java using PDFBox check this post- Generating PDF in Java Using PDFBox Tutorial Merging PDFs using PDFBox To merge PDFs, PDFBox library provides PDFMergerUtility class…
In this tutorial we’ll learn about String in Java which is one of the most important and extensively used class in Java. Java String String in Java is a sequence of characters and it is represented by String class residing in java.lang Package. Whenever you create a String in Java…
Java Stream API provides two methods max() and min() where- max()– Returns the maximum element of this stream according to the provided Comparator. min()– Returns the minimum element of this stream according to the provided Comparator. Table of contents Java Stream max() method max() method Java examples Java Stream min()…
In the Java Stream API there are two methods findFirst() and findAny() where- findFirst() returns the first element of the Stream. findAny() returns any element of the Stream. Table of contents Java Stream findFirst() method Java Stream findFirst() examples Java Stream findAny() method Java Stream findAny() examples Java Stream findFirst()…
