Jtable没有返回最后一个单元格值

Question

这是我的Table类

package build;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.util.ArrayList;
public class Table
{
private ArrayList<Column> columns;
private String NAME;
private static int count=0;
public Table() 
{
    setColumns(new ArrayList<Column>());
    NAME=new String();
    this.NAME="Table"+count;
    count++;
}
public void AddColumn(Column column)
{
    for(Column c: getColumns())
    {
       if(c.getname().equals(column.getname())){return;}
    }
    getColumns().add(column);
}
public int getCount(){return count;}
public void SaveToFile() throws IOException
{

    FileWriter fw = new FileWriter("C:/Users/Ashad/Desktop/text.txt", true);
    BufferedWriter bw = new BufferedWriter(fw);
     bw.write("rn");
    bw.write(this.NAME);
     bw.write("rn");
 for(Column c: getColumns())
 {
 bw.write("rn");
        bw.write(c.getname()+"  ");
        bw.write(c.getdatatype()+"  ");

 if(c.getPK()== true)
 {
        bw.write("true"+"  ");
 }    
    else
    {   bw.write("false"+"  ");
    }
if(c.getNN()== true)
{
    bw.write("true"+"   ");
}     
else
    {bw.write("false"+"  "); } 

 }
 bw.close();
}
  public boolean DeleteColumn(String name)
  {
    for (Column c : getColumns())
    {
        if (c.getname().equals(name)) {return getColumns().remove(c);}
    }
    return false;
  }
 public void viewColumns()
 {
      System.out.append(NAME+"  ");
    for(Column c: getColumns())
    {
      System.out.append("n");
      System.out.append(c.getname()+"  ");
      System.out.append( c.getdatatype()+"  ");
      if(c.getPK()== true)
      {
         System.out.print(true);
      }   
          else
        System.out.print(false);  
      }
     }
public String getNAME() {
    return NAME;
}
public ArrayList<Column> getColumns() {
    return columns;
}
public void setColumns(ArrayList<Column> columns) {
    this.columns = columns;
}

  }

在JTable

 table.setModel(new DefaultTableModel(
                  new Object[][] {
                  {null, null, null, null},
                  {null, null, null, null},
                  {null, null, null, null},
                  {null, null, null, null},
                  {null, null, null, null},
                  {null, null, null, null},
                  {null, null, null, null},
                  {null, null, null, null},
                  {null, null, null, null},
                  {null, null, null, null},
                  {null, null, null, null},
                  {null, null, null, null},
                  {null, null, null, null},
                  {null, null, null, null},
                  },
        new String[] {
            "Column Name", "Data Type", "NN", "PK"
                        }
              ) {
                    Class[] columnTypes = new Class[] {
                String.class, Object.class, Boolean.class, Boolean.class
            };
        public Class getColumnClass(int columnIndex) {
                return columnTypes[columnIndex];
        }

下面的Button将插入到Jtable中的值保存到表的对象中。

 btnNewButton.addActionListener(new ActionListener() 
   {
    @Override
    public void actionPerformed(ActionEvent e) {
      // getTable Values 
       for (int r = 0; r < model.getRowCount(); r++)
        {
           if((String)model.getValueAt(r, 0) != null)
         {
                    Column col=new Column();
            col.setname((String) model.getValueAt(r, 0)) ;
            col.setdatatype((String) model.getValueAt(r, 1));

             /*  if((Boolean)model.getValueAt(r, 2)== true)
                       {
                col.setPK(true); 
               }

             if((Boolean)model.getValueAt(r, 3)== true)
               {
                    col.setNN(true); 
                    }
               */
                    T.AddColumn(col);
             }
                else 
                       break;
            }
           try {
            T.SaveToFile();
            } catch (IOException e1) {
            e1.printStackTrace();
                    }
            T.viewColumns();
           frame.setVisible(false); 
                        }
                    });

问题::*它不保存最后的值，例如，如果最后插入的值是在模型。getValueAt(1,1)或它的at模型。getValueAt(2, 1)

如果Jtable上的输入是Type1 int
类型2 char

上面代码给出的输出:类型2

• 第二个问题是取消注释

  如果((布尔)模型。getValueAt(r, 2)== true)｛col.setPK(真正的);}和

  如果((布尔)模型。getValueAt(r, 3)== true)｛col.setPK(真正的);}

返回类型为布尔值，返回错误

Answer 1

不保存最后一个值