How to Achieve cURL Functionality in Java: A Comprehensive Guide

cURL Equivalent in JAVA: A Comprehensive Guide

Problem:

When tasked with creating an authentication component for a Java application, a developer faces the challenge of replicating cURL functionality in PHP code that uses cURL to handle secure HTTPS transfers.

Solution:

While there is no direct port of cURL to Java, the "java.net" package provides a versatile alternative that offers comparable capabilities:

HttpURLConnection con = (HttpURLConnection) new URL("https://www.example.com").openConnection();

This code establishes a connection to the specified HTTPS endpoint.

con.setRequestMethod("POST");

Sets the HTTP request method to POST.

con.getOutputStream().write("LOGIN".getBytes("UTF-8"));

Sends the "LOGIN" payload to the server.

con.getInputStream();

Reads the server's response.

This code snippet demonstrates how to perform an HTTPS POST request using "java.net", replicating the functionality of cURL's "curl_exec()" method.

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