Jtable не становится видимым?

Question

В моем следующем коде я успешно могу показать данные в таблице, нажав кнопку «Добавить» &. Но после нажатия «Получить значения» он не показывает «Jtable2», который указан как «jTable2.setModel (новый DefaultTableModel (data3, columns2)); Вот их два Jtables. Jtable2 назначается после щелчка на «Get Values» Код:

 package com.ash; 

    import java.sql.Connection; 
    import java.sql.PreparedStatement; 
    import java.sql.ResultSet; 
    import java.sql.ResultSetMetaData; 
    import java.sql.SQLException; 
    import java.sql.Statement; 
    import java.util.logging.Level; 
    import java.util.logging.Logger; 
    import javax.swing.table.DefaultTableModel; 
    import javax.swing.JLabel; 
    import javax.swing.GroupLayout.Alignment; 
    import javax.swing.GroupLayout; 
    import javax.swing.LayoutStyle.ComponentPlacement; 
    import javax.swing.JButton; 
    import java.awt.event.ActionListener; 
    import java.awt.event.ActionEvent; 
    import javax.swing.JPanel; 


    public class ReportD extends javax.swing.JFrame { 
static Object[][] data ; 
static Object[][] data2; 
static Object[] columns={"FirstName","LastName","Age","RefDoctor","Sex","RegId","test"}; 

public static int NumOfCol; 
public Object[] columns2; 
static Object[][] data3; 

    Connection con; 
    Connection con2,con3; 
    ResultSet rs,rs1,rs2,rs3; 


Statement stmt=null; 
Statement stmt2=null; 
Statement stmt3=null; 
int k=0; 
PreparedStatement pr,pr2,pr3; 
String Gid,Gtest; 

public ReportD() { 
    initComponents(); 
} 


private void initComponents() { 



    jButton1 = new javax.swing.JButton(); 
    jScrollPane1 = new javax.swing.JScrollPane(); 
    table = new javax.swing.JTable(); 
    jTextField1 = new javax.swing.JTextField(); 
    jButton2 = new javax.swing.JButton(); 
    jLabel1 = new javax.swing.JLabel(); 


    setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE); 
    setTitle("Report"); 
    //jtable1 



    jButton1.setText("Add"); 
    jButton1.addActionListener(new java.awt.event.ActionListener() { 
     public void actionPerformed(java.awt.event.ActionEvent evt) { 
      try { 
       jButton1ActionPerformed(evt); 
      } catch (ClassNotFoundException e) { 
       // TODO Auto-generated catch block 
       e.printStackTrace(); 
      } catch (SQLException e) { 
       // TODO Auto-generated catch block 
       e.printStackTrace(); 
      } 
     } 
    }); 

    table.setModel(new javax.swing.table.DefaultTableModel(
     new Object [][] { 
      {null, null, null, null, null, null,null}, 

     }, 
     new String [] { 
      "First Name", "Last Name", "Age", "Ref Doctor", "Sex", "Reg Id","test" 
     } 
    ) { 
     boolean[] canEdit = new boolean [] { 
      false, false, false, false, false, false,false 
     }; 

     public boolean isCellEditable(int rowIndex, int columnIndex) { 
      return canEdit [columnIndex]; 
     } 
    }); 
    jScrollPane1.setViewportView(table); 
    table.getColumnModel().getColumn(0).setResizable(false); 
    table.getColumnModel().getColumn(1).setResizable(false); 
    table.getColumnModel().getColumn(2).setResizable(false); 
    table.getColumnModel().getColumn(3).setResizable(false); 
    table.getColumnModel().getColumn(4).setResizable(false); 
    table.getColumnModel().getColumn(5).setResizable(false); 
    table.getColumnModel().getColumn(6).setResizable(false); 

    jButton2.setText("Search"); 
    jButton2.addActionListener(new java.awt.event.ActionListener() { 
     public void actionPerformed(java.awt.event.ActionEvent evt1) { 

       try { 
        jButton2ActionPerformed(evt1); 
       } catch (ClassNotFoundException | SQLException e) { 
        // TODO Auto-generated catch block 
        e.printStackTrace(); 
       } //catch block created 

     } 
    }); 

    jLabel1.setText("Enter Reg. Id"); 

    // The button Get Value and it prints the value of selected row 
    getValue = new JButton("Get Value"); 
    getValue.setToolTipText("Get values from table"); 
    getValue.addActionListener(new ActionListener() { 
     @SuppressWarnings("deprecation") 
     public void actionPerformed(ActionEvent e) { 



         Gid = (String) table.getValueAt(table.getSelectedRow(), 5); 
         Gtest=(String) table.getValueAt(table.getSelectedRow(), 6); 
         System.out.println(Gid); 
         System.out.println(Gtest); 





         //selected's code start here yo yoooo 
         jScrollPane2 = new javax.swing.JScrollPane(); 
        jTable2 = new javax.swing.JTable(); 

         //storing the value of Registration id and test did from the ReportD table 
        try { 
         System.out.println("in selected"+Gid+Gtest); 
         con=DbConnPa.getConObj(); 
         con3=DbConnPa.getConObj(); 

         Statement st = con.createStatement(); 
         ResultSet rs = st.executeQuery("SELECT * FROM "+Gtest+""); 
         ResultSetMetaData rsmd = rs.getMetaData(); 
        NumOfCol = rsmd.getColumnCount(); //it stores the number of columns in NumOfCol 
     //   System.out.println("No. of columns in "+Gtest+"is"+NumOfCol); 
         String o1="null"; 
         String t1="\"Title"; 
         String c1="\""; 
         String c2=c1.concat(rsmd.getColumnName(1)+"\""); 
         int m=1; 
         for(m=1;m<NumOfCol;m++){ 
         o1=o1.concat(",null"); 
         t1=(t1+m).concat("\",\"Title"); 
         }System.out.println(o1); 
         System.out.println(t1+(m)+"\""); 

         for(int n=2;n<=NumOfCol;n++) 
         { 
         //System.out.println("Name of ["+i+"] Column="+rsmd.getColumnName(i)); 
         c2=c2.concat(","+"\""+rsmd.getColumnName(n)+"\""); 
         }System.out.println(c2); 




        jTable2.setModel(new javax.swing.table.DefaultTableModel(
          new Object [][] {{o1},}, new String [] {c2} )); 

        // Object columns2[]={c2}; 
         String sql3="SELECT COUNT (*) FROM "+Gtest+" where regid LIKE '"+Gid+"%'"; 
         pr3=con3.prepareStatement(sql3); 
         rs3=pr3.executeQuery(sql3); 
         rs3.next(); 

         int count = 0; 
        // int col1=NumOfCol; 

         count = rs3.getInt(1); 
          System.out.println(count); 
          data3= new Object [count][NumOfCol]; 
         stmt3=con3.createStatement(); 

         String sql4="SELECT * FROM "+Gtest+" where regid LIKE '"+Gid+"%'"; 
         rs3=stmt3.executeQuery(sql4); 
          k=0; 
         while(rs3.next()){ 
           for(int j=0;j<NumOfCol;j++){ 
             data3[k][j]=rs3.getString(j+1); 
           System.out.println("k:"+k+"j:"+j); 
           } 
          k++;} 




         Object[] columns2={c2}; 

        jScrollPane2.setSize(745, 134); 
        jScrollPane2.setLocation(0, 570); 
         jTable2.setColumnSelectionAllowed(true); 
        jScrollPane2.setViewportView(jTable2); 
        jTable2.getColumnModel().getSelectionModel().setSelectionMode(javax.swing.ListSelectionModel.SINGLE_SELECTION); 
         jTable2.setModel(new DefaultTableModel(data3, columns2)); 
         jTable2.setVisible(true); 

         } catch (ClassNotFoundException e1) { 
         e1.printStackTrace(); 
        } catch (SQLException e1) { 
         e1.printStackTrace(); 
        } 
     } 
    }); 



    javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane()); 
    layout.setHorizontalGroup(
     layout.createParallelGroup(Alignment.TRAILING) 
      .addGroup(layout.createSequentialGroup() 
       .addContainerGap(69, Short.MAX_VALUE) 
       .addGroup(layout.createParallelGroup(Alignment.TRAILING) 
        .addGroup(layout.createSequentialGroup() 
         .addComponent(getValue) 
         .addGap(431)) 
        .addGroup(layout.createSequentialGroup() 
         .addGroup(layout.createParallelGroup(Alignment.LEADING) 
          .addComponent(jButton1) 
          .addGroup(layout.createParallelGroup(Alignment.TRAILING, false) 
           .addGroup(layout.createSequentialGroup() 
            .addGap(10) 
            .addComponent(jLabel1, GroupLayout.PREFERRED_SIZE, 96, GroupLayout.PREFERRED_SIZE) 
            .addPreferredGap(ComponentPlacement.RELATED) 
            .addComponent(jTextField1) 
            .addPreferredGap(ComponentPlacement.UNRELATED) 
            .addComponent(jButton2)) 
           .addComponent(jScrollPane1, GroupLayout.PREFERRED_SIZE, 536, GroupLayout.PREFERRED_SIZE))) 
         .addGap(224)))) 
    ); 
    layout.setVerticalGroup(
     layout.createParallelGroup(Alignment.LEADING) 
      .addGroup(layout.createSequentialGroup() 
       .addGap(30) 
       .addComponent(jButton1) 
       .addPreferredGap(ComponentPlacement.RELATED) 
       .addGroup(layout.createParallelGroup(Alignment.LEADING, false) 
        .addGroup(layout.createParallelGroup(Alignment.BASELINE) 
         .addComponent(jTextField1, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE) 
         .addComponent(jButton2)) 
        .addGroup(layout.createSequentialGroup() 
         .addComponent(jLabel1, GroupLayout.DEFAULT_SIZE, GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE) 
         .addGap(5))) 
       .addGap(2) 
       .addComponent(jScrollPane1, GroupLayout.PREFERRED_SIZE, 184, GroupLayout.PREFERRED_SIZE) 
       .addPreferredGap(ComponentPlacement.RELATED) 
       .addComponent(getValue) 
       .addContainerGap(371, Short.MAX_VALUE)) 
    ); 
    getContentPane().setLayout(layout); 


    pack(); 
}// </editor-fold>       

private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) throws ClassNotFoundException, SQLException {           

      con=DbConnPa.getConObj(); 
      String sql="SELECT COUNT (*) FROM newpatient1"; 
      pr=con.prepareStatement(sql); 
      rs=pr.executeQuery(sql); 
      rs.next(); 

      int count = 0; 
      count = rs.getInt(1); 
      System.out.println(count); 

      data= new Object [count][7]; 
      stmt=con.createStatement(); 
      String sql1="SELECT * FROM newpatient1"; 

      rs1=stmt.executeQuery(sql1); 
        while(rs1.next()){ 
         for(int j=0;j<7;j++){ 
           data[k][j]=rs1.getString(j+1); 
          // System.out.println("i="+"j="+j); 
         } 
       k++;} 
      table.setModel(new DefaultTableModel(data, columns)); 
      table.setAutoCreateRowSorter(true); 
    }           

public void jButton2ActionPerformed(java.awt.event.ActionEvent evt1) throws SQLException, ClassNotFoundException {           

String search=jTextField1.getText(); 
con2=DbConnPa.getConObj(); 

      String sql="SELECT COUNT (*) FROM newpatient1 where regid LIKE '"+search+"%'"; 
      pr=con2.prepareStatement(sql); 
      rs=pr.executeQuery(sql); 
      rs.next(); 
      int count = 0; 

      count = rs.getInt(1); 
      System.out.println(count); 


      data2= new Object [count][7]; 
      stmt=con2.createStatement();      

      //String sql2="SELECT * FROM newpatient1 WHERE regid LIKE"+"'"+search+"%'"; 

      String sql2="SELECT * FROM newpatient1 where regid LIKE '"+search+"%'"; 
      System.out.println(search); 

      stmt2=con2.createStatement(); 
      rs2=stmt2.executeQuery(sql2); 
      k=0; 
        while(rs2.next()){ 
         data2[k][0]=rs2.getString(1); 
         data2[k][1]=rs2.getString(2); 
         data2[k][2]=rs2.getString(3); 
         data2[k][3]=rs2.getString(4); 
         data2[k][4]=rs2.getString(5); 
         data2[k][5]=rs2.getString(6); 
         data2[k][6]=rs2.getString(7); 

         String data=rs2.getString(2); 
        // System.out.println(data+"k=="+k); 
        k++;} 
        table.setModel(new DefaultTableModel(data2, columns)); 
     }           

/** 
* @param args the command line arguments 
*/ 
public static void main(String args[]) { 

    try { 
     for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels()) { 
      if ("Nimbus".equals(info.getName())) { 
       javax.swing.UIManager.setLookAndFeel(info.getClassName()); 
       break; 
      } 
     } 
    } catch (ClassNotFoundException ex) { 
     java.util.logging.Logger.getLogger(ReportD.class.getName()).log(java.util.logging.Level.SEVERE, null, ex); 
    } catch (InstantiationException ex) { 
     java.util.logging.Logger.getLogger(ReportD.class.getName()).log(java.util.logging.Level.SEVERE, null, ex); 
    } catch (IllegalAccessException ex) { 
     java.util.logging.Logger.getLogger(ReportD.class.getName()).log(java.util.logging.Level.SEVERE, null, ex); 
    } catch (javax.swing.UnsupportedLookAndFeelException ex) { 
     java.util.logging.Logger.getLogger(ReportD.class.getName()).log(java.util.logging.Level.SEVERE, null, ex); 
    } 
    //</editor-fold> 

    /* Create and display the form */ 
    java.awt.EventQueue.invokeLater(new Runnable() { 
     public void run() { 
      new ReportD().setVisible(true); 
     } 
    }); 
} 
// Variables declaration - do not modify      
private javax.swing.JButton jButton1; 
private javax.swing.JButton jButton2; 
private javax.swing.JLabel jLabel1; 
private javax.swing.JScrollPane jScrollPane1; 
private javax.swing.JScrollPane jScrollPane2; 
private javax.swing.JTextField jTextField1; 
private javax.swing.JTable table; 
private javax.swing.JTable jTable2; 
private JButton getValue; 
    } 

Answer 1

Вы устанавливаете VIEWPORT из jScrollPane2 как jTable2 но, не добавляя jScrollPane2 к самому JFrame. На мой взгляд, в actionPerformed для getValueJButton Вы должны написать:

jScrollPane1.setViewportView(jTable2); 

вместо

jScrollPane2.setViewportView(jTable2); 

EDIT
В случае, если вы не хотите, чтобы заменить jScrollPane1 VIEWPORT, то просто добавьте jScrollPane2 - JFrame. Он покажет jTable2 на вашем JFrame.