public static JTable typetb = new JTable();
             public static DefaultTableModel typeb = new DefaultTableModel();
             public 构造方法()
             {
             Type bean=new Type();
         TypeDAO tdao=new TypeDAO();
         List<Type> tlist=(List<Type>)tdao.selectType(bean);//这些你懂的
         String[] header = {"序号", "序号","名称","备注"};
         Object[][] data = new Object[tlist.size()][header.length];
           for (int i =0; i < tlist.size(); i++) {
               Type tbean = (Type) tlist.get(i);
               data[i][0]=tbean.getTid();
               data[i][1]=i+1;
               data[i][2]=tbean.getTname();  
               data[i][3]=tbean.getTmatter();
          }
       typeb.setDataVector(data, header);
           hideColumn(typetb, 0);
           typetb.getTableHeader().setPreferredSize(new Dimension(1,25));  
       typetb.getColumnModel().getColumn(1).setPreferredWidth(60);
       typetb.getColumnModel().getColumn(2).setPreferredWidth(100); 
       typetb.getColumnModel().getColumn(3).setPreferredWidth(200); //这只列的宽度
       typetb.setAutoResizeMode(JTable.AUTO_RESIZE_OFF);//设置可以移动宽度
       }
      public static void hideColumn(JTable table, int index) {
        TableColumn tc = table.getColumnModel().getColumn(index);
        tc.setMaxWidth(0);
        tc.setPreferredWidth(0);
        tc.setWidth(0);
        tc.setMinWidth(0);
        table.getTableHeader().getColumnModel().getColumn(index).setMaxWidth(0);
        table.getTableHeader().getColumnModel().getColumn(index).setMinWidth(0);
     }