java - Turning a ResultSet into 2DArray/HashMap/Lists of Lists -


I think I have become a code-blind.

I am currently doing a small project, a friend and we are using JDBC to choose from our database.

What I need is that after running the selection statement, I get back some sort of '2D' list of all the data.

I think I want something like this - array [columnname] [all data inside selected column]

Pseudo code 

  // Calculate all the rows in a column / calculate the column // Add the column name to the 'array' (int i = 1; i & Lt; = columnCount; I ++) columns.add (resultSetMeta.getColumnName (i)); // Adds the result of the first column to 'array'. // How can I add results to numbers? For (int i = 1; i & lt; = rowCount; i ++) {while (resultSet.next ()) rows.add (resultSet.getString (i)); } Columns and ROs Input (columns, rows);  
  •  
      A table - What is the most appropriate data type to use to replicate 'array list, array, or hashmaps'?    
  •  
      What is the best way to create  ResultSet  in a 2D datatype?    
  •   When repeats through a  ResultSet , how can I go to the next column?     
     
     
     You can use the keypad to add important value, Where as the key you add your results metadata and values ​​as values.  
      hashMap & lt; string, object & gt; p = new hashmop & lt; String, Object & gt; (); P.put ("ResultSetkey1", "ResultSetvalue1"); P.put ("ResultSetkey2", "ResultSetvalue2");   
     In addition, I want to say that resultsetUtils

    • Comments

    Post a Comment

    Popular posts from this blog

    jasper reports - How to center align barcode using jasperreports and barcode4j -

    I use iReport 5.5.0 . How to align a barcode component to the center The relevant piece of my jrxml is below & Lt; JR: Code 128 xmlns: JR = "http://jasperreports.sourceforge.net/jasperreports/components" xsi: schemaLocation = "http://jasperreports.sourceforge.net/jasperreports/components http: //jasperreports.sourceforge Purge / xsd / components.xsd "textPosition =" bottom "& gt; & Lt; Jr: codeExpression & gt; & Lt; [CDATA [$ F {number}]] & gt; & Lt; / Jr: codeExpression & gt; & Lt; / Jr: Code 128 & gt; & Lt; / componentElement & gt; "Text" itemprop = "text"> Create a style after this, it is called "barcode", like: & lt; Style name = "barcode" fontName = "Helvetica" fONTSIZE = "10" hAlign = "center" valign = "center" /> and set the property of your barcode element to "barcode".
    Read more

    Verilog Error: output or inout port "Q" must be connected to a structural net expression -

    I get the error every time, I try to compile. I'm not sure why anyone can help is? I'm new to verilog. Module D_FF (clerk, d, reset_n, q); Input D, Clack, reset_en; Output Q; reg Q; lab4_gdl f1 (.lk (~ clk), d (d), .q.m (qm)); lab4_GDL f2 (.Clk (Clk), D (QM), .Q (Q)); Always start at @ (posedge clk, neggeous reset_n) (Reset_n == 0) Q & lt; = 0; Other questions & lt; = D; Edit End: The problem is what we are asking to do: In this section, you apply the memory / registration circuit on the AlterEdie 2 board. will do. The circuit has the following specifications: The present value of swift SW15-0 on the D2 board should be shown in four hexadecimal four sections of HEX3-0. This part of the circuit will be combination logic. To use an active-less asynchronous reset and KEY1 to use KEY0 as the clock input, you must store SW15-0in in a 16-bit register in the value The register should be enabled to have a 16-bit positive edge, which uses the embedded D flip-flo
    Read more

    c# - ASP.NET MVC - Attaching an entity of type 'MODELNAME' failed because another entity of the same type already has the same primary key value -

    In brief, the wrapper module is inserted during posting and the status of an entry is changed to 'modified' . Before changing the state, the state is set to 'separate', but calling attachments () causes the same error to be thrown away. I am using EF 6. Model / wrapper class public class avi model {public A is a {get; Set; } Public listing & lt; B & gt; B {received; Set; } Public cc {receipt; Set; }} Administrator edit public functioning (int? id) {if (id == null) {new HttpStatusCodeResult (HttpStatusCode.BadRequest); } If (! Conveyor Access (id.Value)) new HTTPTitus code result (HTTP status code. Forbidden); Var aViewModel = new AViewModel (); aViewModel.A = db.As.Find (id); If (aViewModel.Receipt == zero) {return HttpNotFound (); } aViewModel.b = db.Bs.Where (x => x.aid == id.Value) .Oolist (); AViewModel.Vendor = db.Cs.Where (x => x.cid == aViewModel.a.cID) .FirstOrDefault (); See Return (aViewModel); } [HTPFost] [Valid AntitiferousTeacon
    Read more