When using Apache HttpClient with Spring Boot’s RestTemplate, you can configure the RestTemplate to use the HttpClient as the underlying HTTP client. Here’s an example of how to configure RestTemplate…

In this example, we will use basic HttpURLConnection Object to post json object. Java HttpURLConnection Post Request: import java.io.BufferedReader; import java.io.DataOutputStream; import java.io.InputStreamReader; import java.net.HttpURLConnection; import java.net.URL; public class PostRequestExample…

To send a POST request with JSON payload using Apache HttpClient, you can follow the steps below: Apache HttpClient Post Example code: import org.apache.http.HttpEntity; import org.apache.http.HttpResponse; import org.apache.http.client.HttpClient; import org.apache.http.client.methods.HttpPost;…

To use Apache HttpClient with Jackson’s Object Mapper for handling JSON serialization and deserialization, you can follow these steps: <dependencies> <!-- Apache HttpClient --> <dependency> <groupId>org.apache.httpcomponents</groupId> <artifactId>httpclient</artifactId> <version>4.5.13</version> </dependency> <!--…

In Java, you can convert a millisecond timestamp to a Date object with respect to a given timezone using the SimpleDateFormat and TimeZone classes. Example code: import java.text.SimpleDateFormat; import java.util.Date;…

Deadlock is a situation where two or more threads are blocked waiting for each other to release the locks they hold, resulting in a deadlock state where none of the…

To check the RAM (memory) size in Linux, you can use various commands and methods. Here are a few common approaches: Using the free command: Open a terminal and run…

To set the JAVA_HOME environment variable for all users on Linux, you can modify the system-wide profile file. Here’s how you can do it: Now, the JAVA_HOME environment variable will…

In Java, Semaphore is a class in the concurrency framework that provides a way to control access to a shared resource. It works by maintaining a count of available permits,…

To merge a branch into another branch in Git, you can use the git merge command. Here’s an example: Assume you have two branches named feature and master. You want…