JTable常见用法细则+设置某列可编辑+滚动表格

JTable常见用法细则

JTable是Swing编程中很常用的控件,这里总结了一些常用方法以备查阅.欢迎补充,转载请注明作者与出处.

一.创建表格控件的各种方式:
1) 调用无参构造函数.

JTable table = new JTable();

2) 以表头和表数据创建表格.

Object[][] cellData =

{

{"row1-col1", "row1-col2"},

{"row2-col1", "row2-col2"}};

String[] columnNames =

{"col1", "col2"};

JTable table = new JTable(cellData, columnNames);

3) 以表头和表数据创建表格,并且让表单元格不可改.

String[] headers =

{ "表头一", "表头二", "表头三" };

Object[][] cellData = null;

DefaultTableModel model = new DefaultTableModel(cellData, headers)

{

public boolean isCellEditable(int row, int column)

{

return false;

}

};

table = new JTable(model);

二.对表格列的控制
1) 设置列不可随容器组件大小变化自动调整宽度.

table.setAutoResizeMode(JTable.AUTO_RESIZE_OFF);

2) 限制某列的宽度.

);

firsetColumn.setPreferredWidth();

firsetColumn.setMaxWidth();

firsetColumn.setMinWidth();

3) 设置当前列数.

DefaultTableModel tableModel = (DefaultTableModel) table.getModel();

;

tableModel.setColumnCount(count);

4) 取得表格列数

int cols = table.getColumnCount();

5) 添加列

DefaultTableModel tableModel = (DefaultTableModel) table.getModel();

tableModel.addColumn("新列名");

6) 删除列

table.removeColumn(table.getColumnModel().getColumn(columnIndex));// columnIndex是要删除的列序号

三.对表格行的控制
1) 设置行高

);

2) 设置当前航数

DefaultTableModel tableModel = (DefaultTableModel) table.getModel();

;

tableModel.setRowCount(n);

3) 取得表格行数

int rows = table.getRowCount();

4) 添加表格行

DefaultTableModel tableModel = (DefaultTableModel) table.getModel();

tableModel.addRow(", "Boss"});

5) 删除表格行

DefaultTableModel tableModel = (DefaultTableModel) table.getModel();

model.removeRow(rowIndex);// rowIndex是要删除的行序号

四.存取表格单元格的数据
1) 取单元格数据

DefaultTableModel tableModel = (DefaultTableModel) table.getModel();

String cellValue=(String) tableModel.getValueAt(row, column);// 取单元格数据,row是行号,column是列号

2) 填充数据到表格.
注:数据是Member类型的链表,Member类如下:

public class Member

{

// 名称

private String name;

// 年龄

private String age;

// 职务

private String title;

}

填充数据的代码:

public void fillTable(List<Member> members)

{

DefaultTableModel tableModel = (DefaultTableModel) table

.getModel();

tableModel.setRowCount();// 清除原有行

// 填充数据

for(Member member:members)

{

String[] arr];

arr[]=member.getName();

arr[]=member.getAge();

arr[]=member.getTitle();

// 添加数据到表格

tableModel.addRow(arr);

}

// 更新表格

table.invalidate();

}

2) 取得表格中的数据

public List<Member> getShowMembers()

{

List<Member> members=new ArrayList<Member>();

DefaultTableModel tableModel = (DefaultTableModel) table

.getModel();

int rowCount=tableModel.getRowCount();

;i<rowCount;i++)

{

Member member=new Member();

member.setName((String)tableModel.getValueAt(i, ));// 取得第i行第一列的数据

));// 取得第i行第二列的数据

));// 取得第i行第三列的数据

members.add(member);

}

return members;

}

五.取得用户所选的行
1) 取得用户所选的单行

int selectRows=table.getSelectedRows().length;// 取得用户所选行的行数

DefaultTableModel tableModel = (DefaultTableModel) table.getModel();

)

{

int selectedRowIndex = table.getSelectedRow(); // 取得用户所选单行

.// 进行相关处理

}

2) 取得用户所选的多行

int selectRows=table.getSelectedRows().length;// 取得用户所选行的行数

DefaultTableModel tableModel = (DefaultTableModel) table.getModel();

)

int[] selRowIndexs=table.getSelectedRows();// 用户所选行的序列

;i<selRowIndexs.length;i++)

{

// 用tableModel.getValueAt(row, column)取单元格数据

);

}

六.添加表格的事件处理

view.getTable().addMouseListener(new MouseListener()

{

public void mousePressed(MouseEvent e)

{

// 鼠标按下时的处理

}

public void mouseReleased(MouseEvent e)

{

// 鼠标松开时的处理

}

public void mouseEntered(MouseEvent e)

{

// 鼠标进入表格时的处理

}

public void mouseExited(MouseEvent e)

{

// 鼠标退出表格时的处理

}

public void mouseClicked(MouseEvent e)

{

// 鼠标点击时的处理

}

});

例子：

import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.FlowLayout;
import java.awt.GridLayout;

import javax.swing.Icon;
import javax.swing.ImageIcon;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.table.DefaultTableModel;

public class PTest{

public PTest()
{
String head[] = {"学号", "姓名", "成绩（请双击以下空格输入）"};

Icon bug = new ImageIcon(getClass().getResource("789.jpg"));
JLabel a = new JLabel (bug);

JTable a1 = new JTable (20,3);
a1.setRowHeight (30);//设置高度
a1.setDragEnabled(true);

//设置第一、二列不可可编辑
DefaultTableModel tableModel = new DefaultTableModel(20,3){
   boolean[] editables = {false, false, true};
   public boolean isCellEditable(int row, int col)
   {
      return editables[col];
   }

//使table不可编辑的代码（放在model中有效）全部不可编辑
//    public boolean isCellEditable(int row, int column)
//             {
//                 return false;
//             }
      };
      a1.setModel(tableModel);

for (int i=0; i<3; i++)
a1.getModel().setValueAt(head[i], 0, i);

JPanel panelwrap = new JPanel (new FlowLayout ());
   JPanel panel = new JPanel (new GridLayout (2,1));
   panel.setPreferredSize (new Dimension (500,400));
   // panel.setBackground (Color.black);
   panel.add (a,BorderLayout.CENTER);
   JScrollPane a2 = new JScrollPane (a1);
   panel.add (a2,BorderLayout.CENTER);
   panelwrap.add(panel);

JFrame frame = new JFrame ("JTableDemo");
   frame.setDefaultCloseOperation (JFrame.EXIT_ON_CLOSE);
   frame.setContentPane (panelwrap);
   frame.setSize(500,400);
   frame.pack();
   frame.show();
}
public static void main(String[] args) {
  PTest k = new PTest();
}
}

//////////////////////////////////////////自己的//////////////////////////////////////

private JTable getJTable0() {
  if (jTable0 == null) {
   jTable0 = new JTable();

   jTable0.setModel(new DefaultTableModel(new Object[][] { {false, "null", "null", "com1", "null", "null", "null", "null", "null", "null", },
     {false, "null", "null", "com2", "null", "null", "null", "null", "null", "null", },
     { false, "null", "null", "com3", "null", "null", "null", "null", "null", "null",},
     { false,"null", "null", "com4", "null", "null", "null", "null", "null", "null", },
     { false,"null", "null", "com5", "null", "null", "null", "null", "null", "null", },
     { false, "null", "null", "com6", "null", "null", "null", "null", "null", "null",},
     { false, "null", "null", "com7", "null", "null", "null", "null", "null", "null", },
     {false, "null", "null", "com8", "null", "null", "null", "null", "null", "null", },
     { false,"null", "null", "com9", "null", "null", "null", "null", "null", "null", },
     { false,"null", "null", "com10", "null", "null", "null", "null", "null", "null", },
     {false, "null", "null", "com11", "null", "null", "null", "null", "null", "null", },
     { false, "null", "null", "com12", "null", "null", "null", "null", "null", "null", }, }, new String[] {"操作", "ID", "status", "序号", "产品序列号", "半成品序列号",
     "所属工作任务号", "产品型号（pn码）", "生产进度状态", "端口状态", }) {
    private static final long serialVersionUID = 1L;
    Class<?>[] types = new Class<?>[] { Boolean.class, Object.class, Object.class, Object.class, Object.class, Object.class, Object.class, Object.class, Object.class,
      Object.class, };

    public Class<?> getColumnClass(int columnIndex) {
     return types[columnIndex];
    }

//    //使table不可编辑的代码（放在model中有效）全部不可编辑
//    public boolean isCellEditable(int row, int column)
//             {
//                 return false;
//             }
    //指定列不可编辑
    boolean[] editables = {true, false, false,false,false,false,false,false,false,false};
       public boolean isCellEditable(int row, int col)
       {
          return editables[col];
       }

//指定行不可编辑
    boolean[] editables = {true, false, false,false,false,false,false,false};
       public boolean isCellEditable(int row, int col)
       {
          return editables[row];
       }

});
}
return jTable0;
}