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
AssertTimeout Example
In this post under Junit, I will show with example how to use and what is the purpose of AssertTimeout assertion method. AssertTimeout is used to verify whether a certain operation completes within the specified timeout or not. For our example we will use the below class to be tested. Class to be tested package…… Continue reading AssertTimeout Example
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