The below code shows the different ways one can declare and initialize an Array in Java: Line 5: Declaration of array along with initialization of its values. Here it is not required to pass the size of the array. Line… Read More ›
Java
How to use regular expression in Java?
Regular expressions are very important tool for seraching in text. Below is the code snippet for executing regex search and capturing different parts of the string based on the regular expression The groups are captured by using (). In the… Read More ›
How to parse number string with commas to Integer or Long?
Below is the code used for parsing number string with commas to Integer or Long
JDK 14 – JEP 361 Switch Expressions out from preview
In my previous post, I wrote about switch expressions and related enhancements released as a preview feature for JDK 12. Subsequently, in JDK 13 there were some changes proposed, like using yield keyword to return value from the switch block… Read More ›
JEP 355 Text Blocks in JDK 13
JDK 13 went GA on September 17th, 2019 and the prominent new features are listed here. One of the new features is “text blocks”. This allows writing multiline strings easily without the need for concatenation while splitting into different lines…. Read More ›
How to Create QRCode Using QRGen in Java
In one of my previous articles, we saw how to create QRCode and its SVG equivalent using Zxing Java library. The Zxing library is no longer actively maintained and for this, there is a wrapper around Zxing library called QRGen,… Read More ›
JDK 12 – JEP 325 Switch Expressions
JDK 12 went GA on March 19, 2019, keeping its word on shorter release cycles and frequent releases. The features part of the release can be found here. One of the interesting features for the developers is the “JEP 325… Read More ›
How to create a QR Code SVG using Zxing and JFreeSVG in Java?
In this article, we will look at how to use the Zxing QR code generation library and JFreeSVG library to create a QR Code SVG image in Java. QR Code Generation The below code creates a java.awt.image.BufferedImage object representing QR… Read More ›
Working with LocalDate, LocalTime and LocalDateTime
Java 8 had a major change for the date and time APIs, which was the inclusion of Joda Time APIs into JDK under the JSR 310: Date and Time API. This JSR was lead by Stephen Colebourne, the creator of… Read More ›
Launch Single-File Source-Code Programs in JDK 11
JEP 330 – Launch Single-File Source-Code Programs is one of the exciting features in the upcoming JDK 11(18.9) release. This feature allows executing your java source code directly using the java interpreter. The source code is compiled in memory and… Read More ›
