CODEWITHSUNDEEP
java
richard sousa
richard sousa

Reputation: 1

Java, error no suitable method found for add()

I need help with a java problem, when I compile it appears an error, and I already looked in other posts and could not solve if they can help me I will be very grateful.

code

import javax.swing.*;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.SQLException;
import java.sql.ResultSet;
import java.util.ArrayList;

public class Sugestao{
   private int idSugestao;
   private String sugestao;
   private ArrayList<JTextArea> guardaSugestao;

   public Sugestao(){
      guardaSugestao = new ArrayList<>();
   }
   public Sugestao(int idSugestao){
      this.idSugestao = idSugestao;
      guardaSugestao = new ArrayList<>();
   }
   public Sugestao(int idSugestao, String sugestao){
      this.idSugestao = idSugestao;
      this.sugestao = sugestao;
      guardaSugestao = new ArrayList<>();
   }
   public int getIdSugestao(){
      return idSugestao;
   }
   public String getSugestao(){
      return sugestao;
   }
   public ArrayList<JTextArea> guardaSugestao(){
      return guardaSugestao;
   }
   public void setIdSugestao(int idSugestao){
      this.idSugestao = idSugestao;
   }
   public void setSugestao(String sugestao){
      this.sugestao = sugestao;
   }
   public void setGuardaSugestao(ArrayList<JTextArea> guardaSugestao){
      this.guardaSugestao = guardaSugestao;
   }

   public void adicionarSugestao(JTextArea jTextArea){
      guardaSugestao.add(jTextArea);
   }

   public ArrayList<JTextArea> carregaSugestao(Connection conn){
      String sqlSelect = "select id, sugestao from tabelaTeste where id_sugestao = ?";
      ArrayList<JTextArea> listaSugestao = new ArrayList<>();

      try(PreparedStatement stm = conn.prepareStatement(sqlSelect);){
         stm.setInt(1, getIdSugestao());
         try(ResultSet rs = stm.executeQuery();){
            while(rs.next()){
               Sugestao s = new Sugestao();
               s.setIdSugestao(rs.getInt("id_sugestao"));
               s.setSugestao(rs.getString("sugestao")); 
               listaSugestao.add(s); // error
            }
         }
         catch(Exception e){
            e.printStackTrace();
         }
         catch(SQLException e1){
            System.out.print(e1.getStackTrace());
         }
         return listaSugestao;
      }
   }
    public String toString() {
        return "Sugestao [id=" + idSugestao + ", sugestao :" + sugestao + "]";
    }
}

This is the error that appears, I do not know how to solve.

error: no suitable method found for add(Sugestao)

Upvotes: 0

Views: 10733

Answers (3)

QBrute
QBrute

Reputation: 4541

listaSugestao expects elements of type JTextArea. But in listaSugestao.add(s); your variable s is of type Sugestao.

Simply change the type of ArrayList<JTextArea> to ArrayList<Sugestao> and also the method definition from public ArrayList<JTextArea> carregaSugestao(Connection conn) to public ArrayList<Sugestao> carregaSugestao(Connection conn) and it should work.

Upvotes: 0

Vasu
Vasu

Reputation: 22452

In your current code, your arraylist is taking JTextArea type as you have declared it as ArrayList<JTextArea> guardaSugestao; So, it needs to be changed as 

ArrayList<Sugestao> guardaSugestao;

so that it takes Sugestao types into the list.

Also, ensure that your methods setGuardaSugestao(), guardaSugestao(), adicionarSugestao() are changed accordingly to accept ArrayList<Sugestao>

Upvotes: 0

Andrei Olar
Andrei Olar

Reputation: 2358

The error appears because of your listaSugestao declaration. It is an ArrayList of type JTextArea, which only accepts JTextArea objects and you try to add a Sugestao object to it. You need to change the ArrayList declaration to be an ArrayList of type Sugestao.

Change this line:

  ArrayList<JTextArea> listaSugestao = new ArrayList<>();

to this:

  ArrayList<Sugestao> listaSugestao = new ArrayList<>();

Upvotes: 1

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