Hw framework

explain

@@ -0,0 +1,21 @@
+$touch test-area
+$nano test-area 
+$ git add test-area 
+$ git commit -m "create test area"
+$ git checkout -b branch-for-conflict                   #2nd branch
+$ nano test-area                                        #1st change
+$ git commit -a -m "add change A"
+$ git checkout main 
+$ nano test-area                                        #2nd branch
+$ git commit -a -m "add change B"
+$ git merge branch-for-conflict                         #try to merge
+
+merge conflict occured:
+
+Auto-merging test-area
+CONFLICT (content): Merge conflict in test-area
+Automatic merge failed; fix conflicts and then commit the result.
+
+$ nano test-area #solve merge conflict
+$ git commit -a -m "merge into branch 'main' branch 'branch-for-conflict'"
+

src/main/java/apiclient/ApiClientUsers.java

@@ -0,0 +1,173 @@
+package apiclient;
+
+import config.Config;
+import data.Endpoints;
+import org.json.JSONObject;
+
+
+import java.io.*;
+import java.net.HttpURLConnection;
+import java.net.MalformedURLException;
+import java.net.ProtocolException;
+import java.net.URL;
+
+public class ApiClientUsers {
+    private static String usersUrl () {return Config.BASE_URL + Endpoints.USERS;}
+    private static String userUrl (int id) {return Config.BASE_URL + Endpoints.USERS + "/" + id;}
+    private static String registerUrl () {return Config.BASE_URL + Endpoints.REGISTER;}
+    private static String loginUrl () {return Config.BASE_URL + Endpoints.LOGIN;}
+
+    private static HttpURLConnection usersResource () throws IOException {
+        URL url = new URL (usersUrl());
+        HttpURLConnection connection = (HttpURLConnection) url.openConnection();
+
+        return connection;
+    }
+
+
+
+    private static HttpURLConnection userResource (int id) throws IOException {
+
+        URL url = new URL(userUrl(id));
+        HttpURLConnection connection = (HttpURLConnection) url.openConnection();
+
+        return connection;
+    }
+
+    private static HttpURLConnection registerResource () throws IOException {
+        URL url = new URL(registerUrl());
+        HttpURLConnection connection = (HttpURLConnection) url.openConnection();
+
+        return connection;
+    }
+    private static HttpURLConnection loginResource () throws IOException {
+        URL url = new URL(loginUrl());
+        HttpURLConnection connection = (HttpURLConnection) url.openConnection();
+
+        return connection;
+    }
+
+    private static String rawResponse (HttpURLConnection connection) throws IOException {
+        InputStream stream = connection.getErrorStream();
+        if (stream == null) stream = connection.getInputStream();
+        String line;
+        StringBuilder response = new StringBuilder();
+        BufferedReader reader = new BufferedReader(new InputStreamReader(stream));
+            while ((line = reader.readLine()) != null) {
+                response.append(line);
+            }
+            reader.close();
+
+
+
+        return response.toString();
+    }
+
+    private static JSONObject jsonResponse (HttpURLConnection connection) throws IOException {
+        JSONObject response = new JSONObject(rawResponse(connection));
+
+        return response;
+    }
+
+    private static void post (HttpURLConnection connection, String body) throws IOException {
+        connection.setRequestProperty("Content-Type", "application/json");
+        connection.setDoOutput(true);
+        connection.setRequestMethod("POST");
+        try(OutputStream os = connection.getOutputStream()) {
+            byte[] input = body.getBytes("utf-8");
+            for (int i = 0; i < input.length; i++) {
+                os.write(input[i]);
+            }
+        }
+    }
+
+    private static void put (HttpURLConnection connection, String body) throws IOException {
+        connection.setRequestProperty("Content-Type", "application/json");
+        connection.setDoOutput(true);
+        connection.setRequestMethod("PUT");
+        try(OutputStream os = connection.getOutputStream()) {
+            byte[] input = body.getBytes("utf-8");
+            for (int i = 0; i < input.length; i++) {
+                os.write(input[i]);
+            }
+        }
+    }
+
+
+
+
+    public Response getUser (int id) throws IOException {
+        HttpURLConnection connection = userResource(id);
+        connection.setRequestMethod("GET");
+        connection.disconnect();
+
+        Response response = new Response(connection.getResponseCode(), jsonResponse(connection));
+
+        return response;
+    }
+
+    public Response getUsers () throws IOException {
+        HttpURLConnection connection = usersResource();
+        connection.setRequestMethod("GET");
+        connection.disconnect();
+
+        Response response = new Response(connection.getResponseCode(), jsonResponse(connection));
+
+        return response;
+    }
+
+    public Response createUser (String name, String job ) throws IOException {
+        HttpURLConnection connection = usersResource();
+        post(connection, "{\"name\": \"" + name + "\", \"job\": \""+job+"\"}");
+        //System.out.println("Status code: "+connection.getResponseCode());
+        connection.disconnect();
+
+        Response response = new Response(connection.getResponseCode(), jsonResponse(connection));
+
+        return response;
+    }
+
+    public Response updateUserPut (int id, String name, String job ) throws IOException {
+        HttpURLConnection connection = userResource(id);
+        put(connection, "{\"name\": \"" + name + "\", \"job\": \""+job+"\"}");
+        //System.out.println("Status code: "+connection.getResponseCode());
+        connection.disconnect();
+
+        Response response = new Response(connection.getResponseCode(), jsonResponse(connection));
+
+        return response;
+    }
+
+    public Response register (String email, String password) throws IOException {
+        HttpURLConnection connection = registerResource();
+        post(connection, "{\"email\": \"" + email + "\", \"password\": \""+password+"\"}");
+        connection.disconnect();
+
+        Response response = new Response(connection.getResponseCode(), jsonResponse(connection));
+
+        return response;
+    }
+
+    public Response login (String email, String password) throws IOException {
+        HttpURLConnection connection = loginResource();
+        post(connection, "{\"email\": \"" + email + "\", \"password\": \""+password+"\"}");
+        connection.disconnect();
+
+        Response response = new Response(connection.getResponseCode(), jsonResponse(connection));
+
+        return response;
+    }
+
+    public Response deleteUser (int id) throws IOException {
+        HttpURLConnection connection = userResource(id);
+        connection.setRequestMethod("DELETE");
+        connection.disconnect();
+
+        Response response = new Response(connection.getResponseCode());
+
+        return response;
+    }
+
+
+
+}

src/main/java/apiclient/Response.java

@@ -0,0 +1,17 @@
+package apiclient;
+
+import org.json.JSONObject;
+
+public class Response {
+    public int statusCode;
+    public JSONObject body;
+
+    public Response (int statusCode) {
+        this.statusCode = statusCode;
+    }
+
+    public Response (int statusCode, JSONObject body) {
+        this.statusCode = statusCode;
+        this.body = body;
+    }
+}

src/main/java/config/Config.java

@@ -0,0 +1,5 @@
+package config;
+
+public class Config {
+    public static final String BASE_URL = "https://reqres.in";
+}

src/main/java/data/Endpoints.java

@@ -0,0 +1,7 @@
+package data;
+
+public class Endpoints {
+    public static final String USERS = "/api/users";
+    public static final String REGISTER = "/api/register";
+    public static final String LOGIN = "/api/login";
+}