Core java

In this article, we will see how to convert LocalDate to Instant in Java. Java LocalDate to Instant Instant class provides an instantaneous point in time. When you want to convert LocalDate to Instant, you need to provide time zone. Using toInstant() wth ZoneId ZoneDateTime’s toInstant() method can be used to convert LocalDate to Instant. […]

1. Overview In this article, we will see how to convert Instant to LocalDate in java. An Instant represents a specific moment in time in the UTC timezone, whereas a LocalDate represents a date without time or timezone information. The challenge is to extract the date part from an Instant object and represent it as […]

In this article, we will see how to convert String to LocalDateTime in Java. LocalDateTime class was introduced in Java 8. LocalDateTime represents local date and time without timezone information. It is represented in ISO 8601 format (yyyy-MM-ddTHH:mm:ss) by default. Java String to LocalDateTime To convert String to LocalDateTime in Java, LocalDateTime provides static method […]

In this article, we will see how to format LocalDateTime to String in java. Java LocalDateTime To String To format LocalDateTime to String, we can create DateTimeFormatter and pass it to LocalDateTime’s format() method. [crayon-6a295dab0ef8c475846145/] Here are steps: Get LocalDateTime instance Create DateTimeFormatter instance with specified format Pass above DateTimeFormatter to format() method to convert […]

In this post, we will see how to convert OutputStream to Byte array in Java. Convert OutputStream to Byte array in Java Here are steps to convert OutputStream to Byte array in java. Create instance of ByteArrayOutputStream baos Write data to ByteArrayOutputStream baos Extract byte[] using toByteArray() method. [crayon-6a295dab0f69e416852392/] Output: Print output: Java2blog Convert OutputStream […]

In this article, we will see how to convert BufferedImage to Byte Array in Java. 💡 Outline To convert BufferedImage to byte array, you can use below code: [crayon-6a295dab0fc43334391488/] Java BufferedImage to Byte Array Here are steps to convert BufferedImage to Byte Array in java: Create instance of ByteArrayOutputStream baos. Call ImageIo.write() with bufferedImage, formatName […]

In this article, we will see how to convert byte array to BufferedImage in java. 💡 Outline To convert byte array to BufferedImage, you can use below code: [crayon-6a295dab10148496030082/] Convert byte array image to BufferedImage in java Using ByteArrayInputStream Here are steps to convert byte array to BufferedImage in java. Create ByteArrayInputStream object by passing […]

In this post, we will see how to convert BufferImage to Image in java. Convert BufferedImage to Image in Java BufferedImage is an Image, so you don’t need to do any conversion. You can just assign it as below: [crayon-6a295dab10290063904250/] Convert java.awt.image.BufferedImage to javafx.scene.image.Image in java You can use SwingFXUtils.toFXImage() to convert image from java.awt.image.BufferedImage […]

In this article, we will see how to convert byte array to base64 String in java. Using Base64 to Convert Byte Array to Base64 String in Java [ Java 8+] Java 8 has finally introduced Base64 functionalities via java.util.Base64 class. You can use Base64's encode() method to convert Byte Array to Base64 String in Java. […]