私は、この関数createDatabaseViewGUIを通じてのJFrameにするJScrollPaneを追加したいのJFrame

Question

にするJScrollPaneを追加すると、どのように私はJFrameのにこのJTableのとするJScrollPaneを追加することができ、それが

package schoolclient; 

import java.awt.Dimension; 
import java.net.MalformedURLException; 
import java.rmi.Naming; 
import java.rmi.NotBoundException; 
import java.rmi.RemoteException; 
import java.sql.SQLException; 
import java.util.ArrayList; 

import javax.swing.JFrame; 
import javax.swing.JScrollPane; 
import javax.swing.JTable; 
import javax.swing.ListSelectionModel; 
import javax.swing.event.ListSelectionEvent; 
import javax.swing.event.ListSelectionListener; 
import javax.swing.table.DefaultTableModel; 

import schoolserver.SchoolInterface; 

public class RMIClient extends JFrame { 
    SchoolInterface sii = null; 
    Object data = null; 
    public static void main(String[] args) { 
     RMIClient rmic = new RMIClient(); 
     rmic.getSchoolInstacne(); 
     //rmic.createDatabaseViewGUI(); 
     JFrame jFrame = new JFrame(); 
     jFrame.setDefaultCloseOperation(EXIT_ON_CLOSE); 
     jFrame.setVisible(true); 
     jFrame.setSize(270, 320); 
     jFrame.setContentPane(rmic.createDatabaseViewGUI()); 
     //Object[] o = rmic.getDatabaseToList(); 
     //for(Object o : rmic.getDatabaseToList()) 
     //System.out.println(o); 
    } 

    public void getSchoolInstacne() { 
     try { 
      sii = (SchoolInterface) Naming.lookup("SchoolServer"); 
     } 
     catch (RemoteException | MalformedURLException | NotBoundException e) { 
      e.printStackTrace(); 
     } 
    } 

    public ArrayList getDatabaseToList() { 

     ArrayList<Object> data = null; 
     try { 
      data = sii.getDatabsesName(); 

     } 
     catch (Exception e) { 
      e.printStackTrace(); 
     } 
     return data; 
    } 

    public void createDatabaseViewGUI() { 
     Object[] x = new Object[10]; 
     int i = 0; 
     for(Object o : getDatabaseToList()) 
      x[i++] = o; 
     DefaultTableModel defaultTable = new DefaultTableModel(); 
     defaultTable.addColumn("Databses Names", x); 
     JTable jTable = new JTable(defaultTable); 
     jTable.setPreferredScrollableViewportSize(new Dimension(250, 350)); 
     jTable.setFillsViewportHeight(true); 
     JScrollPane scrollPane = new JScrollPane(jTable); 
     jTable.getColumnModel().getColumn(0).setPreferredWidth(150); 
     int[] selection = jTable.getSelectedRows(); 
      for (int j = 0; j < selection.length; j++) { 
      selection[j] = jTable.convertRowIndexToModel(selection[j]); 
     super.add(scrollPane); 

     jTable.setSelectionMode(ListSelectionModel.SINGLE_SELECTION); 
     ListSelectionModel lsm = jTable.getSelectionModel(); 
     lsm.addListSelectionListener(new ListSelectionListener() { 
      public void valueChanged(ListSelectionEvent e) { 
       ListSelectionModel lsm = (ListSelectionModel)e.getSource(); 
       int row = jTable.getSelectedRow(); 
       data = (Object)jTable.getValueAt(row, 1); 
      } 
     }); 
      } 
    } 
} 

作業を取得、私はこれを行う方法を導く与えることができます

Answer 1

私はあなたがここに問題があると推測することができます：rmic.createDatabaseViewGUI()。この方法はvoidにはできません。値を返す必要があります。 documentationから

jFrame.getContentPane(rmic.createDatabaseViewGUI()); 

： `新しいRMIClient`と1と`新しいJFrame`との1：

setContentPane(Container contentPane) 
Sets the contentPane property. 

Answer 2

package schoolclient; 

import java.awt.BorderLayout; 
import java.awt.EventQueue; 
import java.net.MalformedURLException; 
import java.rmi.Naming; 
import java.rmi.NotBoundException; 
import java.rmi.RemoteException; 
import java.sql.SQLException; 
import java.util.ArrayList; 

import javax.swing.JFrame; 
import javax.swing.JOptionPane; 
import javax.swing.JPanel; 
import javax.swing.border.EmptyBorder; 
import javax.swing.event.ListSelectionEvent; 
import javax.swing.event.ListSelectionListener; 
import javax.swing.table.DefaultTableModel; 

import schoolserver.SchoolInterface; 

import javax.swing.JScrollPane; 
import javax.swing.JTable; 
import javax.swing.ListSelectionModel; 

public class RMIClient1 extends JFrame { 

    private JPanel contentPane; 
    private JTable table; 
    SchoolInterface sii = null; 
    String data = null; 

    /** 
    * Launch the application. 
    */ 
    public static void main(String[] args) { 

     RMIClient1 frame = new RMIClient1(); 
     EventQueue.invokeLater(new Runnable() { 
      public void run() { 
       try { 
        frame.setResizable(false); 
        frame.setVisible(true); 
       } catch (Exception e) { 
        JOptionPane.showMessageDialog(null, "Couldn't able to load GUI."); 
        //e.printStackTrace(); 
       } 
      } 
     });  
    } 

    /** 
    * Create the frame. 
    */ 
    public RMIClient1() { 
     setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); 
     setBounds(100, 100, 250, 300); 
     contentPane = new JPanel(); 
     contentPane.setBorder(new EmptyBorder(5, 5, 5, 5)); 
     contentPane.setLayout(new BorderLayout(0, 0)); 
     setContentPane(contentPane); 

     JScrollPane scrollPane = new JScrollPane(); 
     contentPane.add(scrollPane, BorderLayout.CENTER); 
     this.getSchoolInstacne(); 
     table = new JTable(createView()){ 
      public boolean isCellEditable(int row, int column) {     
       return false;    
     } 
     }; 
     this.tableValues(table); 
     scrollPane.setViewportView(table); 

    } 


    public void getSchoolInstacne() { 
     try { 
      sii = (SchoolInterface) Naming.lookup("SchoolServer"); 
     } 
     catch (RemoteException | MalformedURLException | NotBoundException e) { 
      JOptionPane.showMessageDialog(null, "Error in connecting to Server"); 
      //e.printStackTrace(); 
     } 
    } 

    public ArrayList getDatabaseToList() { 

     ArrayList<Object> data = null; 
     try { 
      data = sii.getDatabsesName(); 

     } 
     catch (SQLException e) { 
      JOptionPane.showMessageDialog(null, "Error in SQL"); 
      //e.printStackTrace(); 
     } 
     catch (RemoteException e) { 
      JOptionPane.showMessageDialog(null, "Error in connecting to Server"); 
      //e.printStackTrace(); 
     } 
     return data; 
    } 

    Object[] createArray() { 
     Object[] x = new Object[10]; 
     int i = 0; 
     for(Object o : getDatabaseToList()) 
      x[i++] = o; 

     return x; 
    } 

    DefaultTableModel createView() { 
     DefaultTableModel defaultTable = new DefaultTableModel(); 
     defaultTable.addColumn("Databses", createArray()); 

     return defaultTable; 
    } 

    public void tableValues(JTable table) { 
     table.getColumnModel().getColumn(0).setPreferredWidth(150); 
     int[] selection = table.getSelectedRows(); 
      for (int j = 0; j < selection.length; j++) { 
      selection[j] = table.convertRowIndexToModel(selection[j]); 
      } 
     table.setSelectionMode(ListSelectionModel.SINGLE_SELECTION); 
     ListSelectionModel lsm = table.getSelectionModel(); 
     lsm.addListSelectionListener(new ListSelectionListener() { 
      @Override 
      public void valueChanged(ListSelectionEvent e) { 
       // TODO Auto-generated method stub 
       if(e.getValueIsAdjusting()){ 
       ListSelectionModel lsm = (ListSelectionModel)e.getSource(); 
       int row = table.getSelectedRow(); 
       data = (String) table.getValueAt(row, 0); 
       lsm.setValueIsAdjusting(false); 
       SchoolClientGUI frame = new SchoolClientGUI(data); 
       frame.setVisible(true); 
       } 
      } 
     }); 
    } 

    /*public void setOpen(String data) { 
     SchoolClientGUI frame = new SchoolClientGUI(data); 
     frame.setVisible(true); 
    } 
    */ 
}