JAX-RS Client API simple POST example

In this post under JAXRS Client section, I will show with simple example how to use the JAXRS Client API to make a POST request to REST api resource. Below is the complete code for the example Main class 1 package defaultPackage; 2 3 import jakarta.ws.rs.client.Client; 4 import jakarta.ws.rs.client.ClientBuilder; 5 import jakarta.ws.rs.client.Entity; 6 import jakarta.ws.rs.client.Invocation;…… Continue reading JAX-RS Client API simple POST example

Converting Date instance to Instant instance

In this post under DateTime, I will show how to convert an instance of “Date” class to “Instant” instance. Below is the code to that will do the conversion. Date date = new Date(); Instant instant = date.toInstant(); As shown in the above code snippet, first we create a “Date” instance and store in “date”…… Continue reading Converting Date instance to Instant instance

Converting Instant instance to Date instance

In this post under DateTime, I will show how to convert an instance of “Instant” class to “Date” instance. Below is the code to that will do the conversion. Instant instant = Instant.now(); Date date = Date.from(instant); “now” static method of “Instant” class will return an “Instant” instance representing the current date time. Then we…… Continue reading Converting Instant instance to Date instance

Serializing and De-Serializing Date object to and from a custom pattern

In this post under Java, I will show with example how to serialize and de-serialize Date object using a custom pattern. In the previous post, we used “SimpleDateFormat” class to serialize and de-serialize Date object using a pattern obtained based on system default locale. This pattern was figured out by Java and was not provided…… Continue reading Serializing and De-Serializing Date object to and from a custom pattern

Serializing and De-Serializing Date object to and from pattern

In this post, I will show with example how to serialize and deserialize Date object. Java provides “SimpleDateFormat” class to serialize and deserialize Date objects. Below is an example Main class 1 package datetime; 2 3 import java.text.ParseException; 4 import java.text.SimpleDateFormat; 5 import java.util.Date; 6 7 public class Example1 { 8 public static void main(String[]…… Continue reading Serializing and De-Serializing Date object to and from pattern

JAX-RS Client API Simple GET Example

In this post under JAXRS Client, I will show with simple example how to use the JAXRS Client API to make a GET request to REST api resource. Below is the complete code of the example Main Code 1 package defaultPackage; 2 3 import jakarta.ws.rs.client.Client; 4 import jakarta.ws.rs.client.ClientBuilder; 5 import jakarta.ws.rs.client.Invocation; 6 import jakarta.ws.rs.client.WebTarget; 7…… Continue reading JAX-RS Client API Simple GET Example

Configuring ExponentialBackOffPolicy (using annotations)

In this post, under Spring Retry I will show with example how to configure ExponentialBackOffPolicy using annotations. For our example we will use the below service class Service class 1 package defaultPackage; 2 3 import java.util.Date; 4 5 import org.springframework.retry.annotation.Backoff; 6 import org.springframework.retry.annotation.Retryable; 7 import org.springframework.stereotype.Service; 8 9 @Service 10 public class Service15 { 11…… Continue reading Configuring ExponentialBackOffPolicy (using annotations)

Creating and Parsing a asymmetric key signed JWT containing claims

In this post under JJWT, I will show with example how to create and parse asymmetric key signed JWT containing claims. Below is the complete code for your reference. Main Class 1 package defaultPackage; 2 import java.security.KeyPair; 3 import java.security.PrivateKey; 4 import java.security.PublicKey; 5 import java.util.Date; 6 import java.util.HashMap; 7 import java.util.Map; 8 9 import…… Continue reading Creating and Parsing a asymmetric key signed JWT containing claims

Creating and Parsing a asymmetric key signed JWT containing payload

In this post under JJWT, I will show with example how to create and parse asymmetric key signed JWT. The JWT can contain claims or payload. For our example we will use a JWT containing payload. Below is the complete code for your reference Main Code 1 package defaultPackage; 2 import java.security.KeyPair; 3 import java.security.PrivateKey;…… Continue reading Creating and Parsing a asymmetric key signed JWT containing payload