Java 无法对同一类的对象使用方法_Java_Object

Java 无法对同一类的对象使用方法

java object

Java 无法对同一类的对象使用方法,java,object,Java,Object,我正在实现一个JFrame类，该类必须查看一个表并对其进行处理。这个表有一个AbstractTableModel，我在上面定义了一个方法，我想在JFrame类中使用它。但我不能这么做。代码如下：必须查看JTable的JFrame类 public class CreaOrario extends JFrame { public CreaOrario(int num) { initialize(num); } /** * Initialize the contents of th

我正在实现一个

JFrame

类，该类必须查看一个表并对其进行处理。这个表有一个

AbstractTableModel

，我在上面定义了一个方法，我想在

JFrame

类中使用它。但我不能这么做。代码如下：

必须查看JTable的JFrame类

public class CreaOrario extends JFrame {


public CreaOrario(int num) {
    initialize(num);
}

/**
 * Initialize the contents of the frame.
 */
private void initialize(final int semestre) {
    this.setSize(1150,650);
    this.setTitle("Creazione dell'Orario");
    this.setLocationRelativeTo(null);
    this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);


    TabellaOrario orarioEditabile = new TabellaOrario(semestre);
    this.getContentPane().add(orarioEditabile, BorderLayout.CENTER);

    final JTable table = orarioEditabile.getTable();
    //now I'd like to do: table.getLesson;
}
}

必须添加到JFrame中并包含以下表的JPanel类：

public class TabellaOrario extends JPanel
{
private JTable table;

public TabellaOrario (int semestre)
{

    setLayout(new BoxLayout(this, BoxLayout.Y_AXIS)); 
    table = new JTable(new MyTableModel());
    table.setFillsViewportHeight(true);     
    table.setPreferredScrollableViewportSize(new Dimension(510, 350));
    JScrollPane jps = new JScrollPane(table);
    add(jps);
    add(new JScrollPane(table));
    table.setCellSelectionEnabled(true);
    table.setRowHeight(40);

}

public JTable getTable() {
    return table;
}
public class MyTableModel extends AbstractTableModel 
{   


private String[] columns = {"","Lunedì","Martedì", "Mercoledì", "Giovedì", "Venerdì", "Sabato"};


private Object [][] data = {{"8:30 - 9:30","","","","","",""},
        {"9:30 - 10:30","","","","","",""},
        {"10:30 - 11:30","","","","","",""},
        {"11:30 - 12:30","","","","","",""},
        {"12:30 - 13:30","","","","","",""},
        {"13:30 - 14:30","","","","","",""},
        {"14:30 - 15:30","","","","","",""},
        {"15:30 - 16:30","","","","","",""},
        {"16:30 - 17:30","","","","","",""}};



        @Override
        public int getColumnCount() {
            return columns.length;
        }

        @Override
        public int getRowCount() {
            return data.length;
        }

        @Override
        public String getColumnName(int col) {
            return columns[col];
        }

        @Override
        public Object getValueAt(int row, int col) {
            return data[row][col];

        }

        @Override
        public void setValueAt(Object aValue, int row, int col) {
            data[row][col] = aValue;
            fireTableCellUpdated(row, col);

            }

     }
        public String[] getLesson (int row, int column)
        {
            String value = (String) table.getValueAt(row, column);
            int start = value.indexOf("<b>");
            int end = value.indexOf("</b>");
            String insegnamento = value.substring(start + "<b>".length(), end);

            start = value.lastIndexOf("<b>");
            end = value.lastIndexOf("</b>");
            String aula = value.substring(start + "<b>".length(), end);

            return new String[] {insegnamento,aula};

        }
}
}

公共类TabellaOrario扩展了JPanel
{
专用JTable表；
公共塔贝拉奥拉里奥酒店
{
setLayout（新的BoxLayout（这是BoxLayout.Y_轴））；
table=新的JTable（新的MyTableModel（））；
表.setFillsViewPerthweight（真）；
表.setPreferredScrollableViewportSize（新维度（510350））；
JScrollPane jps=新的JScrollPane（表）；
增补（太平绅士）；
添加（新JScrollPane（表））；
table.setCellSelectionEnabled（真）；
表1.设置行高（40）；
}
公共JTable getTable（）{
返回表；
}
公共类MyTableModel扩展了AbstractTableModel
{   
私有字符串[]列={”、“Lunedì”、“Martedì”、“Mercoledì”、“Giovedì”、“venredì”、“Sabato”}；
私有对象[][]数据={{“8:30-9:30”、“”、“”、“”、“”、“”、“”、“”、“”、“”、“”、“”}，
{"9:30 - 10:30","","","","","",""},
{"10:30 - 11:30","","","","","",""},
{"11:30 - 12:30","","","","","",""},
{"12:30 - 13:30","","","","","",""},
{"13:30 - 14:30","","","","","",""},
{"14:30 - 15:30","","","","","",""},
{"15:30 - 16:30","","","","","",""},
{"16:30 - 17:30","","","","","",""}};
@凌驾
public int getColumnCount（）{
返回列的长度；
}
@凌驾
public int getRowCount（）{
返回数据长度；
}
@凌驾
公共字符串getColumnName（int-col）{
返回列[col]；
}
@凌驾
公共对象getValueAt（整数行，整数列）{
返回数据[行][col]；
}
@凌驾
public void setValueAt（对象有效、整行、整列）{
数据[行][列]=aValue；
FireTableCell更新（行、列）；
}
}
公共字符串[]getLesson（int行，int列）
{
字符串值=（字符串）table.getValueAt（行、列）；
int start=value.indexOf（“”）；
int end=value.indexOf（“”）；
String insignamento=value.substring（开始+“”.length（），结束）；
开始=值。lastIndexOf（“”）；
结束=值。lastIndexOf（“”）；
字符串aula=value.substring（开始+“”.length（），结束）；
返回新字符串[]{insignanto，aula}；
}
}
}

在

MyTableModel

类中，我定义了要在

CreaOrario

类中使用的方法

getLesson（）

但是，如果在

MyTableModel

中写入

table.getLesson（）

，则会显示一条消息错误，表明

类型JTable的getLesson（）方法未定义。
为什么?table
infact是一个TabellaOrario
对象，并将MyTableModel
作为模型getLesson（）
是为MyTableModel
定义的，所以我希望table.getLesson（）
可以工作。
正如您的代码所示getLesson
是在TabellaOrario
中定义的，而不是在MyTableModel
中定义的。这可能就是问题所在
尝试保持代码的形式，您将看到该方法没有在类中实现
public class TabellaOrario extends JPanel
{
   private JTable table;
   MyTableModel tm;

   public TabellaOrario (int semestre)
   {

       setLayout(new BoxLayout(this, BoxLayout.Y_AXIS));
       tm = new MyTableModel();
       table = new JTable(tm);
       // YOU CAN NOW CALL tm.getLesson() OR table.((MyTableModel)getTableModel()).getLesson();
       table.setFillsViewportHeight(true);     
       table.setPreferredScrollableViewportSize(new Dimension(510, 350));
       JScrollPane jps = new JScrollPane(table);
       add(jps);
       add(new JScrollPane(table));
       table.setCellSelectionEnabled(true);
       table.setRowHeight(40);
   }

   public JTable getTable() {
       return table;
   }

    public class MyTableModel extends AbstractTableModel 
    {   


       private String[] columns = {"","Lunedì","Martedì", "Mercoledì", "Giovedì", "Venerdì", "Sabato"};


       private Object [][] data = {{"8:30 - 9:30","","","","","",""},
            {"9:30 - 10:30","","","","","",""},
            {"10:30 - 11:30","","","","","",""},
            {"11:30 - 12:30","","","","","",""},
            {"12:30 - 13:30","","","","","",""},
            {"13:30 - 14:30","","","","","",""},
            {"14:30 - 15:30","","","","","",""},
            {"15:30 - 16:30","","","","","",""},
            {"16:30 - 17:30","","","","","",""}};



            @Override
            public int getColumnCount() {
                return columns.length;
            }

            @Override
            public int getRowCount() {
                return data.length;
            }

            @Override
            public String getColumnName(int col) {
                return columns[col];
            }

            @Override
            public Object getValueAt(int row, int col) {
                return data[row][col];

            }

            @Override
            public void setValueAt(Object aValue, int row, int col) {
                data[row][col] = aValue;
                fireTableCellUpdated(row, col);

                }

            public String[] getLesson (int row, int column)
            {
                String value = (String) table.getValueAt(row, column);
                int start = value.indexOf("<b>");
                int end = value.indexOf("</b>");
                String insegnamento = value.substring(start + "<b>".length(), end);

                start = value.lastIndexOf("<b>");
                end = value.lastIndexOf("</b>");
                String aula = value.substring(start + "<b>".length(), end);

                return new String[] {insegnamento,aula};

            }
    }
}

公共类TabellaOrario扩展了JPanel
{
专用JTable表；
MyTableModelTM；
公共塔贝拉奥拉里奥酒店
{
setLayout（新的BoxLayout（这是BoxLayout.Y_轴））；
tm=新的MyTableModel（）；
表=新JTable（tm）；
//现在可以调用tm.getLessure（）或table。（（MyTableModel）getTableModel（））.getLessure（）；
表.setFillsViewPerthweight（真）；
表.setPreferredScrollableViewportSize（新维度（510350））；
JScrollPane jps=新的JScrollPane（表）；
增补（太平绅士）；
添加（新JScrollPane（表））；
table.setCellSelectionEnabled（真）；
表1.设置行高（40）；
}
公共JTable getTable（）{
返回表；
}
公共类MyTableModel扩展了AbstractTableModel
{   
私有字符串[]列={”、“Lunedì”、“Martedì”、“Mercoledì”、“Giovedì”、“venredì”、“Sabato”}；
私有对象[][]数据={{“8:30-9:30”、“”、“”、“”、“”、“”、“”、“”、“”、“”、“”、“”}，
{"9:30 - 10:30","","","","","",""},
{"10:30 - 11:30","","","","","",""},
{"11:30 - 12:30","","","","","",""},
{"12:30 - 13:30","","","","","",""},
{"13:30 - 14:30","","","","","",""},
{"14:30 - 15:30","","","","","",""},
{"15:30 - 16:30","","","","","",""},
{"16:30 - 17:30","","","","","",""}};
@凌驾
public int getColumnCount（）{
返回列的长度；
}
@凌驾
public int getRowCount（）{
返回数据长度；
}
@凌驾
公共字符串getColumnName（int-col）{
返回列[col]；
}
@凌驾
公共对象getValueAt（整数行，整数列）{
返回数据[行][col]；
}
@凌驾
public void setValueAt（对象有效、整行、整列）{
数据[行][列]=aValue；
FireTableCell更新（行、列）；
}
公共字符串[]getLesson（int行，int列）
{
字符串值=（字符串）table.getValueAt（行、列）；
int start=value.indexOf（“”）；
int end=value.indexOf（“”）；
String insignamento=value.substring（开始+“”.length（），结束）；
开始=值。lastIndexOf（“”）；
end=value.las
String[] lessons = ((TabellaOrario.MyTableModel)table.getModel()).getLesson();