implement simple http api to make get requests

src/main/java/HttpApi.java

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+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStreamReader;
+import java.net.HttpURLConnection;
+import java.net.URL;
+
+public class HttpApi {
+    public static String sendHttpGETRequest(String url) throws IOException {
+        URL obj = new URL(url);
+        HttpURLConnection httpURLConnection = (HttpURLConnection) obj.openConnection();
+        httpURLConnection.setRequestMethod("GET");
+        int responseCode = httpURLConnection.getResponseCode();
+
+        if (responseCode == HttpURLConnection.HTTP_OK) {
+            BufferedReader in = new BufferedReader(new InputStreamReader(httpURLConnection.getInputStream()));
+            String inputLine;
+            StringBuffer response = new StringBuffer();
+
+            while ((inputLine = in .readLine()) != null) {
+                response.append(inputLine);
+            } in .close();
+
+            return response.toString();
+        }
+        return null;
+    }
+}

src/test/java/HttpApiTest.java

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+import org.junit.jupiter.api.Test;
+
+import java.io.IOException;
+import java.util.Objects;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+class HttpApiTest {
+
+    @Test
+    void sendHttpGETRequest() {
+        assertDoesNotThrow(() -> HttpApi.sendHttpGETRequest("https://httpbin.org/get"));
+        try {
+            assertTrue(Objects.requireNonNull(HttpApi.sendHttpGETRequest("https://httpbin.org/get")).contains("args"));
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+    }
+}