How to receiving values from one JFrame from another and insert in the JTable

Question

I'm with dificutly for receiving values from one JFrame and insert in the JTable.

I want know how to receive one object academico ready to be inserted in my JTable. From de my class FrameTemp.

Class model Acadêmico.

package model;

public class Academico {
private String matricula;
private String nome;
private String curso;
private int periodo;

public Academico() {
}

public Academico(String matricula, String nome, String curso, int periodo) {
    this.matricula = matricula;
    this.nome = nome;
    this.curso = curso;
    this.periodo = periodo;
}

public String getMatricula() {
    return matricula;
}

public void setMatricula(String matricula) {
    this.matricula = matricula;
}

public String getNome() {
    return nome;
}

public void setNome(String nome) {
    this.nome = nome;
}

public String getCurso() {
    return curso;
}

public void setCurso(String curso) {
    this.curso = curso;
}

public int getPeriodo() {
    return periodo;
}

public void setPeriodo(int periodo) {
    this.periodo = periodo;
}
}

Class Frame that should receive values.

import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Font;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.ArrayList;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.event.TableModelEvent;
import javax.swing.event.TableModelListener;
import javax.swing.table.DefaultTableModel;

public class Frame extends JFrame implements ActionListener {

private static Academico novoAcademico;
private static FrameTemp frameTemporario;
private JTable tabela;
private DefaultTableModel modelo;
private ArrayList<Academico> academicos;
private JButton btAdd, btAtualizar, btDelete;
private JPanel painel, painelGrid;
private BorderLayout borderLayout;
private GridLayout gridLayout;

public Frame(Academico academico) {
    this.setTitle("Acadêmicos Cadastrados");

    this.painel = new JPanel();
    this.painelGrid = new JPanel();

    borderLayout = new BorderLayout();
    gridLayout = new GridLayout(1, 3);
    setContentPane(painel);
    this.setLayout(borderLayout);

    painel.add(painelGrid);
    painelGrid.setLayout(gridLayout);

    this.modelo = new DefaultTableModel();
    this.tabela = new JTable(modelo);
    this.btAdd = new JButton("Insert");
    this.btAdd.setFont(new Font("Verdana", Font.PLAIN, 20));
    this.btAdd.setBackground(Color.BLACK);
    this.btAdd.setForeground(Color.WHITE);
    this.btAtualizar = new JButton("Update");
    this.btAtualizar.setFont(new Font("Verdana", Font.PLAIN, 20));
    this.btAtualizar.setBackground(Color.BLACK);
    this.btAtualizar.setForeground(Color.WHITE);
    this.btDelete = new JButton("Delete");
    this.btDelete.setFont(new Font("Verdana", Font.PLAIN, 20));
    this.btDelete.setBackground(Color.BLACK);
    this.btDelete.setForeground(Color.WHITE);

    this.modelo.addColumn("Matrícula");
    this.modelo.addColumn("Nome");
    this.modelo.addColumn("Curso");
    this.modelo.addColumn("Período");

    this.tabela.getColumnModel().getColumn(0).setPreferredWidth(20);
    this.tabela.getColumnModel().getColumn(1).setPreferredWidth(30);
    this.tabela.getColumnModel().getColumn(2).setPreferredWidth(50);
    this.tabela.getColumnModel().getColumn(3).setPreferredWidth(20);

    this.academicos = new ArrayList<>();

    this.academicos.add(new Academico("123", "Student1", "Information System", 3));
    this.academicos.add(new Academico("234", "Student2", "Science", 5));
    this.academicos.add(new Academico("345", "Student3", "Engineer", 7));

    for (Academico a : this.academicos) {
        this.modelo.addRow(new Object[]{a.getMatricula(), a.getNome(), a.getCurso(), a.getPeriodo()});
    }

    this.painel.add(BorderLayout.NORTH, new JScrollPane(this.tabela));
    this.painel.add(BorderLayout.SOUTH, painelGrid);
    this.painelGrid.add(btAdd);
    this.painelGrid.add(btAtualizar);
    this.painelGrid.add(btDelete);

    this.btDelete.addActionListener(new ActionListener() {

        @Override
        public void actionPerformed(ActionEvent e) {
            int dialog = JOptionPane.YES_NO_OPTION;

            int selRow = tabela.getSelectedRow();
            if (selRow != -1) {
                int resultado = JOptionPane.showConfirmDialog(null, "Deseja realmente excluir essa linha?", "Confirmação", dialog);

                if (resultado == 0) {
                    modelo.removeRow(selRow);
                }

            }
        }
    }
    );

    this.btAdd.addActionListener(this);

    this.pack();

    this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

    this.setVisible(true);
}

public static void main(String[] args) {
    new Frame(novoAcademico);
}

@Override
public void actionPerformed(ActionEvent e) {
    if (e.getSource() == btAdd) {

        Academico academico = new Academico();
        frameTemporario = new FrameTemp();
        frameTemporario.setVisible(true);


        ArrayList<Academico> lista = new ArrayList<>();

        lista.add(new Academico(academico.getMatricula(), academico.getNome(), academico.getCurso(), academico.getPeriodo()));

        for (Academico a : lista) {

            this.modelo.addRow(new Object[]{a.getMatricula(), a.getNome(), a.getCurso(), a.getPeriodo()});
        }


    }
}
}

Class that should send the values

import java.awt.BorderLayout;
import java.awt.Container;
import java.awt.Font;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.ArrayList;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JTextField;
import org.jdesktop.swingx.prompt.PromptSupport;

public class FrameTemp extends JFrame implements ActionListener {

private String title = "Adicionar novo";
private Frame frame;
private ArrayList<Academico> academicos;
private Academico academico;
private JTextField tfMatricula, tfNome, tfCurso, tfPeriodo;
private JButton btConfirmar;
private JPanel painel, painelGrid;

private BorderLayout borderLayout;
private GridLayout gridLayout;

public FrameTemp() {
    this.setTitle(title);
    Container c = getContentPane();

    c.setLayout(new BorderLayout());

    Container c2 = new JPanel();
    c2.setLayout(new GridLayout(1, 4));
    academico = new Academico();
    academicos = new ArrayList<Academico>();

    this.btConfirmar = new JButton("Confirmar");
    this.tfMatricula = new JTextField();
    this.tfMatricula.setToolTipText("Insira sua matrícula aqui");
    PromptSupport.setPrompt("Matrícula", tfMatricula);
    PromptSupport.setFocusBehavior(PromptSupport.FocusBehavior.SHOW_PROMPT, tfMatricula);
    PromptSupport.setFontStyle(Font.BOLD, tfMatricula);

    this.tfNome = new JTextField();
    this.tfNome.setToolTipText("Insira seu nome aqui");
    PromptSupport.setPrompt("Nome", tfNome);
    PromptSupport.setFocusBehavior(PromptSupport.FocusBehavior.SHOW_PROMPT, tfNome);
    PromptSupport.setFontStyle(Font.BOLD, tfNome);

    this.tfCurso = new JTextField();
    this.tfCurso.setToolTipText("Insira seu curso aqui");
    PromptSupport.setPrompt("Curso", tfCurso);
    PromptSupport.setFocusBehavior(PromptSupport.FocusBehavior.SHOW_PROMPT, tfCurso);
    PromptSupport.setFontStyle(Font.BOLD, tfCurso);

    this.tfPeriodo = new JTextField();
    this.tfPeriodo.setToolTipText("Insira seu período aqui");
    PromptSupport.setPrompt("Período", tfPeriodo);
    PromptSupport.setFocusBehavior(PromptSupport.FocusBehavior.SHOW_PROMPT, tfPeriodo);
    PromptSupport.setFontStyle(Font.BOLD, tfPeriodo);

    btConfirmar.addActionListener(this);
    c2.add(tfMatricula);
    c2.add(tfNome);
    c2.add(tfCurso);
    c2.add(tfPeriodo);

    c.add(btConfirmar);

    c.add(BorderLayout.NORTH, c2);
    c.add(BorderLayout.SOUTH, btConfirmar);

    this.setVisible(true);
    this.setSize(500, 300);
    this.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
}

@Override
public void actionPerformed(ActionEvent e) {

    this.academico.setMatricula(tfMatricula.getText().toString());
    this.academico.setNome(tfNome.getText());
    this.academico.setCurso(tfCurso.getText());
    this.academico.setPeriodo(Integer.parseInt(tfPeriodo.getText()));

   Frame frame = new Frame(academico);
    this.dispose();
}

}

And how would it be? My debt is being received as the values in the Frame class. — Rafael Carlos, Mar 27 '16 at 03:47
[How to Make Dialogs](http://docs.oracle.com/javase/tutorial/uiswing/components/dialog.html) or [Observer Pattern](http://www.oodesign.com/observer-pattern.html) — MadProgrammer, Mar 27 '16 at 04:03
See [The Use of Multiple JFrames, Good/Bad Practice?](http://stackoverflow.com/q/9554636/418556) — Andrew Thompson, Mar 27 '16 at 06:15

score 4 · Answer 1 · answered Mar 27 '16 at 04:31

Based on what you seem to be trying to do you, should be using a modal dialog, which will cause the execution of your code to stop at the point the dialog is made visible until it is made invisible by the user.

See How to Make Dialogs for more details.

For example...

import java.awt.BorderLayout;
import java.awt.Container;
import java.awt.Dimension;
import java.awt.EventQueue;
import java.awt.Font;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.ArrayList;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JTextField;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;
import org.jdesktop.swingx.prompt.PromptSupport;

public class Main {

    public static void main(String[] args) {
        new Main();
    }

    public Main() {
        EventQueue.invokeLater(new Runnable() {
            @Override
            public void run() {
                try {
                    UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
                } catch (ClassNotFoundException | InstantiationException | IllegalAccessException | UnsupportedLookAndFeelException ex) {
                    ex.printStackTrace();
                }

                StuffINeedToAskYou askYou = new StuffINeedToAskYou();
                int response = JOptionPane.showConfirmDialog(null, askYou, "Adicionar novo", JOptionPane.OK_CANCEL_OPTION, JOptionPane.PLAIN_MESSAGE);
                if (response == JOptionPane.OK_OPTION) {
                    Academico academico = askYou.getAcademico();
                }
            }
        });
    }

    public class StuffINeedToAskYou extends JPanel implements ActionListener {

        private String title = "Adicionar novo";
        private ArrayList<Academico> academicos;
        private Academico academico;
        private JTextField tfMatricula, tfNome, tfCurso, tfPeriodo;
        private JButton btConfirmar;
        private JPanel painel, painelGrid;

        private BorderLayout borderLayout;
        private GridLayout gridLayout;

        public StuffINeedToAskYou() {

            setLayout(new BorderLayout());

            Container c2 = new JPanel();
            c2.setLayout(new GridLayout(1, 4));
            academico = new Academico();
            academicos = new ArrayList<Academico>();

            this.btConfirmar = new JButton("Confirmar");
            this.tfMatricula = new JTextField();
            this.tfMatricula.setToolTipText("Insira sua matrícula aqui");
            PromptSupport.setPrompt("Matrícula", tfMatricula);
            PromptSupport.setFocusBehavior(PromptSupport.FocusBehavior.SHOW_PROMPT, tfMatricula);
            PromptSupport.setFontStyle(Font.BOLD, tfMatricula);

            this.tfNome = new JTextField();
            this.tfNome.setToolTipText("Insira seu nome aqui");
            PromptSupport.setPrompt("Nome", tfNome);
            PromptSupport.setFocusBehavior(PromptSupport.FocusBehavior.SHOW_PROMPT, tfNome);
            PromptSupport.setFontStyle(Font.BOLD, tfNome);

            this.tfCurso = new JTextField();
            this.tfCurso.setToolTipText("Insira seu curso aqui");
            PromptSupport.setPrompt("Curso", tfCurso);
            PromptSupport.setFocusBehavior(PromptSupport.FocusBehavior.SHOW_PROMPT, tfCurso);
            PromptSupport.setFontStyle(Font.BOLD, tfCurso);

            this.tfPeriodo = new JTextField();
            this.tfPeriodo.setToolTipText("Insira seu período aqui");
            PromptSupport.setPrompt("Período", tfPeriodo);
            PromptSupport.setFocusBehavior(PromptSupport.FocusBehavior.SHOW_PROMPT, tfPeriodo);
            PromptSupport.setFontStyle(Font.BOLD, tfPeriodo);

            btConfirmar.addActionListener(this);
            c2.add(tfMatricula);
            c2.add(tfNome);
            c2.add(tfCurso);
            c2.add(tfPeriodo);

            add(btConfirmar);

            add(BorderLayout.NORTH, c2);
            add(BorderLayout.SOUTH, btConfirmar);

        }

        public Academico getAcademico() {
            return academico;
        }

        @Override
        public void actionPerformed(ActionEvent e) {

            this.academico.setMatricula(tfMatricula.getText().toString());
            this.academico.setNome(tfNome.getText());
            this.academico.setCurso(tfCurso.getText());
            this.academico.setPeriodo(Integer.parseInt(tfPeriodo.getText()));
        }

    }

    public class Academico {

        private String matricula;
        private String nome;
        private String curso;
        private int periodo;

        public Academico() {
        }

        public Academico(String matricula, String nome, String curso, int periodo) {
            this.matricula = matricula;
            this.nome = nome;
            this.curso = curso;
            this.periodo = periodo;
        }

        public String getMatricula() {
            return matricula;
        }

        public void setMatricula(String matricula) {
            this.matricula = matricula;
        }

        public String getNome() {
            return nome;
        }

        public void setNome(String nome) {
            this.nome = nome;
        }

        public String getCurso() {
            return curso;
        }

        public void setCurso(String curso) {
            this.curso = curso;
        }

        public int getPeriodo() {
            return periodo;
        }

        public void setPeriodo(int periodo) {
            this.periodo = periodo;
        }
    }
}

@RafaelCarlos Can you explain how it doesn't solve your problem? — MadProgrammer, Mar 30 '16 at 05:25

score -1 · Accepted Answer · answered Mar 30 '16 at 05:19

I solved to put a new method and the part of the Click event was also wrong.

I did not change anything the Academico class.

Solution

Class Frame

import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Font;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.ArrayList;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.table.DefaultTableModel;

public class Frame extends JFrame implements ActionListener {

private static Academico novoAcademico;
private static FrameTemp frameTemporario;
private JTable tabela;
private static DefaultTableModel modelo;
private ArrayList<Academico> academicos;
private JButton btAdd, btAtualizar, btDelete;
private JPanel painel, painelGrid;
private BorderLayout borderLayout;
private GridLayout gridLayout;

public Frame(Academico academico) {
    this.setTitle("Acadêmicos Cadastrados");
    this.painel = new JPanel();
    this.painelGrid = new JPanel();

    borderLayout = new BorderLayout();
    gridLayout = new GridLayout(1, 3);
    setContentPane(painel);
    this.setLayout(borderLayout);

    painel.add(painelGrid);
    painelGrid.setLayout(gridLayout);

    this.modelo = new DefaultTableModel();
    this.tabela = new JTable(modelo);
    this.btAdd = new JButton("Insert");
    this.btAdd.setFont(new Font("Verdana", Font.PLAIN, 20));
    this.btAdd.setBackground(Color.BLACK);
    this.btAdd.setForeground(Color.WHITE);
    this.btAtualizar = new JButton("Update");
    this.btAtualizar.setFont(new Font("Verdana", Font.PLAIN, 20));
    this.btAtualizar.setBackground(Color.BLACK);
    this.btAtualizar.setForeground(Color.WHITE);
    this.btDelete = new JButton("Delete");
    this.btDelete.setFont(new Font("Verdana", Font.PLAIN, 20));
    this.btDelete.setBackground(Color.BLACK);
    this.btDelete.setForeground(Color.WHITE);

    this.modelo.addColumn("Matrícula");
    this.modelo.addColumn("Nome");
    this.modelo.addColumn("Curso");
    this.modelo.addColumn("Período");

    this.tabela.getColumnModel().getColumn(0).setPreferredWidth(20);
    this.tabela.getColumnModel().getColumn(1).setPreferredWidth(30);
    this.tabela.getColumnModel().getColumn(2).setPreferredWidth(50);
    this.tabela.getColumnModel().getColumn(3).setPreferredWidth(20);

    this.academicos = new ArrayList<>();

    this.academicos.add(new Academico("123", "Fredson", "Sistemas de Informação", 3));
    this.academicos.add(new Academico("234", "Vieira", "Ciência da Computação", 5));
    this.academicos.add(new Academico("345", "Costa", "Engenharia da Computação", 7));

    for (Academico a : this.academicos) {
        this.modelo.addRow(new Object[]{a.getMatricula(), a.getNome(), a.getCurso(), a.getPeriodo()});
    }

    this.painel.add(BorderLayout.NORTH, new JScrollPane(this.tabela));
    this.painel.add(BorderLayout.SOUTH, painelGrid);
    this.painelGrid.add(btAdd);
    this.painelGrid.add(btAtualizar);
    this.painelGrid.add(btDelete);

    this.btDelete.addActionListener(new ActionListener() {

        @Override
        public void actionPerformed(ActionEvent e) {
            int dialog = JOptionPane.YES_NO_OPTION;

            int selRow = tabela.getSelectedRow();
            if (selRow != -1) {
                int resultado = JOptionPane.showConfirmDialog(null, "Deseja realmente excluir essa linha?", "Confirmação", dialog);

                if (resultado == 0) {
                    modelo.removeRow(selRow);
                    JOptionPane.showMessageDialog(null, "Registro excluído com sucesso!" + "\nTotal de registros existentes: " + modelo.getRowCount());
                }

            }
        }
    }
    );

    this.btAdd.addActionListener(this);

    this.pack();

    this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

    this.setVisible(true);
}

public static void main(String[] args) {
    new Frame(novoAcademico);
}

@Override
public void actionPerformed(ActionEvent e) {
    if (e.getSource() == btAdd) {

        frameTemporario = new FrameTemp();
        frameTemporario.setVisible(true);

    }
}

public static void addAcademico(Academico academico) {
    academico = frameTemporario.getAcademico();

    ArrayList<Academico> lista = new ArrayList<>();

    lista.add(new Academico(academico.getMatricula(), academico.getNome(), academico.getCurso(), academico.getPeriodo()));

    for (Academico a : lista) {
        System.out.println("Lista: " + lista.size());
        modelo.addRow(new Object[]{a.getMatricula(), a.getNome(), a.getCurso(), a.getPeriodo()});
        System.out.println(a.getMatricula() + "\n" + a.getNome() + "\n" + a.getCurso() + "\n" + a.getPeriodo());
    }

}

}

Class FrameTemp

import java.awt.BorderLayout;
import java.awt.Container;
import java.awt.Font;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.ArrayList;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JTextField;
import org.jdesktop.swingx.prompt.PromptSupport;

/**
 *
 * @author rafaelcarlos
 */
public class FrameTemp extends JFrame implements ActionListener {

private String title = "Adicionar novo";
private ArrayList<Academico> academicos;
private static Academico academico;
private JTextField tfMatricula, tfNome, tfCurso, tfPeriodo;
private JButton btConfirmar;

public FrameTemp() {
    this.setTitle(title);
    Container c = getContentPane();

    c.setLayout(new BorderLayout());

    Container c2 = new JPanel();
    c2.setLayout(new GridLayout(1, 4));
    academico = new Academico();
    academicos = new ArrayList<Academico>();

    this.btConfirmar = new JButton("Confirmar");
    this.tfMatricula = new JTextField();
    this.tfMatricula.setToolTipText("Insira sua matrícula aqui");
    PromptSupport.setPrompt("Matrícula", tfMatricula);
    PromptSupport.setFocusBehavior(PromptSupport.FocusBehavior.SHOW_PROMPT, tfMatricula);
    PromptSupport.setFontStyle(Font.BOLD, tfMatricula);

    this.tfNome = new JTextField();
    this.tfNome.setToolTipText("Insira seu nome aqui");
    PromptSupport.setPrompt("Nome", tfNome);
    PromptSupport.setFocusBehavior(PromptSupport.FocusBehavior.SHOW_PROMPT, tfNome);
    PromptSupport.setFontStyle(Font.BOLD, tfNome);

    this.tfCurso = new JTextField();
    this.tfCurso.setToolTipText("Insira seu curso aqui");
    PromptSupport.setPrompt("Curso", tfCurso);
    PromptSupport.setFocusBehavior(PromptSupport.FocusBehavior.SHOW_PROMPT, tfCurso);
    PromptSupport.setFontStyle(Font.BOLD, tfCurso);

    this.tfPeriodo = new JTextField();
    this.tfPeriodo.setToolTipText("Insira seu período aqui");
    PromptSupport.setPrompt("Período", tfPeriodo);
    PromptSupport.setFocusBehavior(PromptSupport.FocusBehavior.SHOW_PROMPT, tfPeriodo);
    PromptSupport.setFontStyle(Font.BOLD, tfPeriodo);

    btConfirmar.addActionListener(this);
    c2.add(tfMatricula);
    c2.add(tfNome);
    c2.add(tfCurso);
    c2.add(tfPeriodo);

    c.add(btConfirmar);

    c.add(BorderLayout.NORTH, c2);
    c.add(BorderLayout.SOUTH, btConfirmar);

    this.setVisible(true);
    this.setSize(500, 300);
    this.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
}

//Metodo que você vai usar para recuperar os dados na outra classe
public static Academico getAcademico() {
    return FrameTemp.academico;
}

@Override
public void actionPerformed(ActionEvent e) {

    this.academico.setMatricula(tfMatricula.getText());
    this.academico.setNome(tfNome.getText());
    this.academico.setCurso(tfCurso.getText());
    this.academico.setPeriodo(Integer.parseInt(tfPeriodo.getText()));
    ;
    Frame.addAcademico(academico);
    this.dispose();
}

}

You do realise that using `static` in this way is a horrible, horrible idea which will eventually blow up in your face. Create two instances of `FrameTemp` update the information in the first, then the second, now try and call `getAcademico` ... which version of the data are you getting? You're basically trying to create the workflow of a modal dialog without all the benefits or protections of a modal dialog. And before you tell me it works, no, it won't, not for long, the more complex the solution becomes, the worse this hack will become — MadProgrammer, Mar 30 '16 at 05:27

How to receiving values from one JFrame from another and insert in the JTable

2 Answers2