How to populate/create new classes from Strings/html data? JAVA

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• How to log incoming request in spring MVC

  I have a JSON request body like this

  {  
     "3DSecure":{  
        "paRes":"xxxxxxxxxxxxxxxxxxxxxxx"
     }
  }
  

  I developed endpoint to log that request.

  @RequestMapping(value = "/logging/requests", method = RequestMethod.POST)
  @ResponseBody
  public String loggingIncomingRequest(@RequestBody AxiPayCargilsRequest request,
                                           HttpServletRequest servletRequest,
                                           ServiceContext serviceContext){
  
      log.info("!--REQUEST START--!"+request);
  
      log.info("");
      return null;
  }
  

  How to log this request can anyone help me from the level of Object creation Thanks.
• Problems in office 365 integration with graph API using Java SDK

  I have been following https://github.com/microsoftgraph/msgraph-sdk-java project for getting all the mails using Microsoft Graph API. This project works fine based on my changed configuration.

  However, this follows OAuth authentication and I have to configure redirect url, and while running project, I got authentication code as query param on given url.

  I stuck at two points :

  1. How to by pass redirect_url concept, since my application is going to run in background. so, is there any way, I can auto capture this authentication code?

  2. By trading authentication code, I receive access_token having 3600 expiry using below method.

     OAuth2AccessToken mAccessToken = mOAuthService.getAccessToken(authCodeFromURL);
     

  In above object, receiving below JSON, which does not have refresh token.

  {
      "token_type": "Bearer",
      "scope": "Files.ReadWrite openid User.Read Mail.Send Mail.ReadWrite",
      "expires_in": 3600,
      "ext_expires_in": 3600,
      "access_token": "encryptedCode",
      "id_token": "encryptedCode"
  }
  

  I have tried to get the new access token with below method from SDK by using id_token, but it is not working, gives me invalid.

  OAuth2AccessToken mAccessToken = mOAuthService.refreshAccessToken(idToken);
  

  Invalid JSON :

  {
      "error": "invalid_grant",
      "error_description": "AADSTS9002313: Invalid request. Request is malformed or invalid.\r\nTrace ID: 03690b71-4056\r\nCorrelation ID: b70a7b7b-963b-4cd6\r\nTimestamp: 2019-05-22 08:24:33Z",
      "error_codes": [9002313],
      "timestamp": "2019-05-22 08:24:33Z",
      "trace_id": "03690b71-4056-49b9",
      "correlation_id": "b70a7b7b-963b-4cd6"
  }
  

  What is id_token?

  How can I refresh this access_token? Or Is there any other way/method to do it?
• Array Manipulation : HackerRank Questions : JAVA

  I am doing this Array Manipulation problem from hackerrank and it tells me compile error is Terminated due to timeout.
  

  For small arrays my method work perfectly. This error only happens for bigger array values.

  Here is the question link. Question Here

  Starting with a 1-indexed array of zeros and a list of operations, for each operation add a value to each of the array element between two given indices, inclusive. Once all operations have been performed, return the maximum value in your array.

  For example, the length of your array of zeros . Your list of queries is as follows:

  a b k
  1 5 3
  4 8 7
  6 9 1
  

  Add the values of between the indices and inclusive:

  index -> 1 2 3  4  5 6 7 8 9 10
          [0,0,0, 0, 0,0,0,0,0, 0]
          [3,3,3, 3, 3,0,0,0,0, 0]
          [3,3,3,10,10,7,7,7,0, 0]
          [3,3,3,10,10,8,8,8,1, 0]
  

  The largest value is after all operations are performed.

  Given below is my method.

   static long arrayManipulation(int n, int[][] queries) {
      long max = 0L;
      long[] arr = new long[n];
      for (int i = 0; i < n; i++) {
          arr[i] = 0L;
      }
      for (int i = 0; i < queries.length; i++) {
          int[] q = queries[i];
          int start = q[0] - 1;
          int end = q[1] - 1;
          int val = q[2];
          long tempMax = updateVal(start, end, val, arr);
          if (tempMax > max) {
             max = tempMax;
          }
      }
      return max;
   }
  
  
  
  static long updateVal(int start, int end, int val, long[] arr) {
     long max = 0L;
     for (int i = start; i <= end; i++) {
         arr[i] = arr[i] + val;
         if (arr[i] > max) {
             max = arr[i];
         }
     }
     return max;
  }
  

  Given below are few test classes that doesn't work with my code.
  Test1 Test2 Test3

  Please help me to figure this out. I searched for lots of answers based on java.
  But I couldn't understand them.
  This is my last resort. Please help.
• How to access bridge of eth0 & wlan0 in rapberry pi with hostname through android phone?

  My raspberry pi is connected to my home router through LAN cable, raspberry pi has created it's hotspot. I have installed MQTT server on raspberry pi. I have created a bridge between eth0 & wla0 in raspberry pi so that the devices connected to home router through wifi can publish message on raspberry pi server and they should be received by devices which are connected to raspberry pi through its WiFi. But bridge is getting IP address from DHCP which changes dynamically. So to publish message, everytime i have to change the IP address. Is there any way we can access the bridge without changing IP address everytime ? This is an image of The architecture to visualize the problem
• video cannot play after upload from retrofit to wcf

  I want to upload a video by retrofit to WCF Service. I can upload video as well and I can save this video in a specific path on the server. But, unfortunately, this video cannot play after storing on the server by any media player. I try these codes both of "WCF" and "Android Java" like below:

  In Android:

  @Multipart
      @POST("MYSERVER/UploadVideo/")
      @Headers({
              "Content-Type: multipart/form-data",
              "Accept: application/json;charset=utf-8"
      })
      Call<Verify> uploadVideo(
              @Part MultipartBody.Part images
  
      );
  
   RequestBody requestFile =
  RequestBody.create(MediaType.parse("multipart/form-data"), file);
  
  fileBody =
    MultipartBody.Part.createFormData("videoData", file.getName(), requestFile);
  
  Call<Verify> call = service.uploadVideo(fileBody);
  

  In WCF Service:

  [OperationContract]
          [WebInvoke(Method = "POST", UriTemplate = "/UploadVideo/",
  RequestFormat = WebMessageFormat.Json, ResponseFormat = WebMessageFormat.Json)]
          VerifyModel UploadVideo(Stream video);
  
  
  
  
   string apPath = System.Web.Hosting.HostingEnvironment.ApplicationPhysicalPath + "Uploads\\Videos\\" + videoname;
  
  
  
  using (FileStream fs = new FileStream(apPath, FileMode.CreateNew, FileAccess.Write))
  {
     CopyStream(video, fs);
   }
  
  public static void CopyStream(Stream input, Stream output)
          {
              byte[] buffer = new byte[8 * 1024];
              int len;
              while ((len = input.Read(buffer, 0, buffer.Length)) > 0)
              {
                  output.Write(buffer, 0, len);
              }
          }
  

  as I told you, I can save the video with the correct size and mp4 format. but the video cannot play with any media player

  
• How to find the Position of String array item if I am showing value in dialog?

  String [] strinArray={"A","B,"c","D"};
  AlertDialog.Builder builder = new AlertDialog.Builder(activity);
  
          @Override
  
          public void onClick(final DialogInterface dialog, final int item) {
  
            String value = stringArray[item];
  
  
         }
  

  ---

  String [] strinArray={"A","B,"c","D"};
  AlertDialog.Builder builder = new AlertDialog.Builder(activity);
  
          @Override
  
          public void onClick(final DialogInterface dialog, final int item) {
  
            String value = stringArray[item];
  
  
         }
  

  I want to get Position of item what I have selected ?
• Java - Error: Main method not found in class Main

  Just beginning to learn Java and I cant seem to understand why I am getting the following error message:

  Error: Main method not found in class Main, please define the mainmethod as: public static void main(String[] args) or a JavaFX application class must extend javafx.application.Application exit status 1

  The am trying to write code that will answer the following:

  The parameter weekday is true if it is a weekday, and the parameter vacation is true if we are on vacation. We sleep in if it is not a weekday or we're on vacation. Return true if we sleep in.

  sleepIn(false, false) → true sleepIn(true, false) → false sleepIn(false, true) → true

  My code is:

  public class Main {
  public boolean sleepIn(boolean weekday, boolean vacation) {
  {   return (!weekday || vacation);  }
  

  } }

  I updated the code to the following:

  public class Main {
    public static void main(String[] args){
      public boolean sleepIn(boolean weekday, boolean vacation)
    }
  {   return (!weekday || vacation);  }
  
  }
  

  but go the below error message now:

  Main.java:3: error: illegal start of expression
      public boolean sleepIn(boolean weekday, boolean vacation)
      ^
  Main.java:3: error: ';' expected
      public boolean sleepIn(boolean weekday, boolean vacation)
                            ^
  Main.java:3: error: <identifier> expected
      public boolean sleepIn(boolean weekday, boolean vacation)
                                             ^
  Main.java:3: error: not a statement
      public boolean sleepIn(boolean weekday, boolean vacation)
                                                      ^
  Main.java:3: error: ';' expected
      public boolean sleepIn(boolean weekday, boolean vacation)
                                                              ^
  5 errors
  compiler exit status 1
  

  I cant tell whats causing the error
• React Hook - Converting from class to hooks - Ternary Operator

  I'd like to change this to the hook format or function.

  CODE

  updateRoom(roomId){
    if (roomId === '') {
      this.setState({RoomId: '', Room: ''})
    } else {
    this.setState({RoomId: roomId.key, Room: roomId.name});
    }
   }
  

  What am I missing in my ternary operator?

  And would I have to change my function name to useUpdateRoom to represent a hook function?

  HOOK

  function UpdateRoom(roomId) {
    return '' ? setRoomId : Room
  }
  
  function App() {
  
    const [rooms, setRooms]   = useState('');
    const [roomId, setRoomId] = useState('');
    const [user, setUser]     = useState('');
  
  
  return (
    <div className="app">
    <div className="room">
    {rooms.map((room, index) => (
      <Room key={index} index={index} room={room} />
  
    ))}
   </div>
   </div>
   )
  }
  
• React - Converting Classes to Hooks

  I have this bit of React code that I am trying to convert from classes to function components using useState and/or useEffect.

  *CLASS CODE

  class App extends Component {
    constructor(props){
          super(props);
            this.state = {
                  activeRoom: '',
                  activeRoomId: '',
                  user: ''
    }
  }
  
  updateRoom(roomId){
    if (roomId === '') {
      this.setState({activeRoomId: '', activeRoom: ''})
    } else {
    this.setState({activeRoomId: roomId.key, activeRoom: roomId.name});
    }
  }
  
  setUser(currentUser){
      this.setState({user: currentUser});
  }
  
  render() {
    return (
      <div className={this.App}>
        <nav className={this.roomNavigation}>
          <header className={this.appHeader}>
            <h1>Chat Room</h1>
          </header>
          <div className={this.logIn}>
            <User firebase={firebase} setUser={this.setUser.bind(this)} user={this.state.user}/>
          </div>
          <RoomList firebase={firebase}
                    updateRoom={this.updateRoom.bind(this)}
                    activeRoomId={this.state.activeRoomId}
                    activeRoom={this.state.activeRoom}/>
        </nav>
        <section className={this.messagelist}>
        <MessageList firebase={firebase}
                       activeRoom = {this.state.activeRoom}
                       activeRoomId = {this.state.activeRoomId}
                       user = {this.state.user}/>
        </section>
      </div>
    );
   }
  }
  
  export default App;
  

  This is what I have so far, I did not include all the proper imports needed.

  HOOKS

  function Room({ room, index }) {
   return(
    <div className="room">{room}</div>
   )
  }
  
  
  
  function App() {
  
    const [rooms, setRooms] = useState('');
  
   return (
     <div className="app">
     <div className="room">
      {rooms.map((room, index) => (
     <Room key={index} index={index} room={room} />
     ))}
     </div>
   </div>
    ) 
   }
  
  
   export default App;
  

  NOTE

  I do not want to do a direct translation, I'd also like to see if there's a better way to create chatrooms with also the ability for people to log into their usernames.
• Problem with not loading data from access to the datagridview using adodb?

  When I start the project, nothing loads on the dgv. If anyone could teach me or give me some hint I appreciate. Any help will be welcome

  I checked the database name, where it is and it is all good this. I believe the adodb connection is good.

  This code is in the module.

  Public Function getRS(ByVal sql As String, rs As ADODB.Recordset, ByVal RO As Boolean, ByRef sErro As String) As Boolean
          Dim Con As New ADODB.Connection
  
          On Error Resume Next
          Con.Open("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:\Users\test.mdb;Persist Security Info=true")
          rs.Open(sql, Con, ADODB.CursorTypeEnum.adOpenDynamic, ADODB.LockTypeEnum.adLockOptimistic)
          If Err.Number = 0 Then
              Return True
          Else
  
              sErro = Err.Description
              Return False
  
          End If
          On Error GoTo 0
      End Function
  

  This is in the main form

  Private Sub FrmMain_Load(sender As Object, e As EventArgs) Handles MyBase.Load
      Dim retval As Boolean
      Dim s As String = "Select * from table1"
      Dim sErro As String = ""
      retval = getRS(s, rs, False, sErro)
       If retval Then
      gridPessoa.DataSource = rs
  
       End If
  End Sub
  

  Expecting to get data, but it looks like it is not loading anything.
• VB: Populate a textbox with popup from txt

  I am creating a vb file, and I have a txt file with some that I want to populate a textbox. What it is currently doing: It is choosing an option that i input in the textbox that I have created.

  What I want it to do: Create a popup with every option from a textbox file, show it on screen, let me choose, and then populate another textbox with my choice. Current code and screenshot:

  Public Class Form1
  Private Sub TextBox1_MouseClick(ByVal sender As Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles TextBox1.MouseClick
      Dim f As New Form2
      Try
          f.Owner = Me
          '
          ' Before showing the child form populate TextBoxes
          '
          f.TextBox1.Text = "1"
          f.TextBox2.Text = "2"
          f.TextBox3.Text = "3"
          If f.ShowDialog = Windows.Forms.DialogResult.OK Then
  
              Dim Box = (From T In f.Controls.OfType(Of TextBox)()
                         Where Not String.IsNullOrWhiteSpace(T.Text)
                         Select T Order By T.Name).FirstOrDefault
  
              If Box IsNot Nothing Then
                  Me.TextBox1.Text = Box.Text
              End If
          End If
      Finally
          f.Dispose()
      End Try
  
  End Sub
  
  End Class
  

  Form 2

  Public Class Form2
  Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click
      Dim Box = (From T In Controls.OfType(Of TextBox)()
                 Where Not String.IsNullOrWhiteSpace(T.Text)
                 Select T Order By T.Name).FirstOrDefault
  
      If Box IsNot Nothing Then
          CType(Me.Owner, Form1).TextBox1.Text = Box.Text
      End If
      CType(Me.Owner, Form1).ActiveControl = CType(Me.Owner, Form1).cmdClose
  
      Close()
  End Sub
  
  End Class
  

  Image:

  edit: now i only need to make the checkbox into locked textboxes, one line from the text file each.
• Firebase: Populate a search with data from another collection

  I have two collecitons: users and establishments, in the user collection i save the respective establishment id. I would like to know how to bring back the establishment data when i request the users.