javaapplication1.Prog.java Source code

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Here is the source code for javaapplication1.Prog.java

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/*
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 */
package javaapplication1;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.ProtocolException;
import java.net.URL;
import java.util.List;
import java.util.Scanner;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import org.json.JSONTokener;

/**
 *
 * @author M
 */
public class Prog {

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        try {
            Prog obj = new Prog();
            obj.run(args);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    public String help = "help:commands;\n" + "transfer:transfer\n" + "exit: exit\n";

    public void run(String[] args) throws JSONException, IOException {
        int k = 0;
        while (k == 0) {
            Scanner sc = new Scanner(System.in);
            System.out.print("your command:");
            String i = sc.nextLine();

            if ("exit".equals(i))
                k = 1;
            else {
                if ("help".equals(i)) {
                    System.out.print(help);
                } else if ("transfer".equals(i)) {
                    System.out.print("user:");
                    String user = sc.nextLine();
                    System.out.print("from account:");
                    String account1 = sc.nextLine();
                    System.out.print("to account:");
                    String account2 = sc.nextLine();
                    System.out.print("amount:");
                    Long amount = sc.nextLong();
                    Long amount1 = getAmountfromAcc(account1, user);
                    Long amount2 = getAmountfromAcc(account2, user);
                    JSONObject obj1 = new JSONObject();
                    JSONObject obj2 = new JSONObject();
                    obj1.put("name", account1);
                    obj1.put("amount", amount1 - amount);
                    String obj11 = obj1.toString();
                    transferStuff(obj11, user);

                    obj2.put("name", account2);
                    obj2.put("amount", amount2 + amount);
                    String obj22 = obj2.toString();
                    transferStuff(obj22, user);
                    System.out.print("accounts updated\n");

                } else
                    System.out.print("incorrect command\n");
            }
        }
    }

    public Long getAmountfromAcc(String accountName, String userName) throws JSONException {
        JSONObject jsonArray = null;

        try {
            URL u = new URL("http://localhost:8080/bankserver/users/" + userName + "/" + accountName);
            HttpURLConnection httpURLConnection = (HttpURLConnection) u.openConnection();
            httpURLConnection.setRequestMethod("GET");
            BufferedReader bufferedReader = new BufferedReader(
                    new InputStreamReader(httpURLConnection.getInputStream()));
            StringBuilder stringBuilder = new StringBuilder();
            String line;
            while ((line = bufferedReader.readLine()) != null) {
                stringBuilder.append(line + '\n');
            }
            String jsonString = stringBuilder.toString();
            jsonArray = new JSONObject(jsonString);
            Long amountt = jsonArray.getLong("amount");
            System.out.print("amount:" + amountt + "/n");
            return amountt;

        } catch (MalformedURLException e) {
            e.printStackTrace();
        } catch (ProtocolException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
        return null;
    }

    public void transferStuff(String obj, String user) throws MalformedURLException, IOException {

        URL object = new URL("http://localhost:8080/bankserver/users/" + user);
        HttpURLConnection con = (HttpURLConnection) object.openConnection();
        con.setDoOutput(true);
        con.setRequestProperty("Content-Type", "application/json");
        con.setRequestProperty("Accept", "application/json");
        con.setRequestMethod("PUT");
        OutputStreamWriter wr = new OutputStreamWriter(con.getOutputStream());
        wr.write(obj);
        wr.flush();
        wr.close();
        con.getInputStream();
    }
}