请教一个关于SWING控件刷新的问题

Question

TO:shuneng() 
能说详细点吗?

Answer 1

为什么要每次setModel(...)?
很浪费资源的.你修改model的数据,然后updateUI()就可以了.

Answer 2

TO：maowu(猫呜) 
这个updateUI()是那的方法？如何用？谢谢！

Answer 3

这是的的TableModel，因为Object[][]的构造是在构造函数中完成的所以每次更新数据后都只能产生新的TableModel
class jTable1DataModel extends AbstractTableModel{
        Object[][] p={{"","","","","","","","",""}};
        String[] n={"区域","位号","开关状态","相电压","线电流"," Q "," P "," W ","保护定值"};
        
        public jTable1DataModel(){
            synchronized(dco){
                if(dco != null){
                    p=new Object[DBconnection.inti][n.length];
                    int pinti=0;
                    
                    Set set=dco.entrySet();
                    Iterator i=set.iterator();
                    while(i.hasNext()){
                        Map.Entry me=(Map.Entry)i.next();
                        HashMap hashmap=(HashMap)me.getValue();
                        Set set1=hashmap.entrySet();
                        Iterator i1=set1.iterator();
                        while(i1.hasNext()){
                            Map.Entry me1=(Map.Entry)i1.next();
                            DataCell datacell=(DataCell)me1.getValue();
                            Object[] oatmp={datacell.getQuyu(), datacell.getName(), datacell.getKaiguan(), datacell.getV(), datacell.getI(),
                            datacell.getQ(), datacell.getP(), datacell.getW(), datacell.getBaohudingzhi()};
                            p[pinti++]=oatmp;
                        }
                        
                    }
                }
            }
            
        }
        public int getColumnCount() {
            return n.length;
        }
        
        public int getRowCount() {
            return p.length;
        }
        public String getColumnName(int col){
            return n[col];
        }
        
        public Object getValueAt(int rowIndex, int columnIndex) {
            return p[rowIndex][columnIndex];
        }

Answer 4

你就把它拿出来把,不要把太多的事情放到构造方法里做.
比如你可以在TableModel里增加一个pubic void requery(){}方法,每次要从新
查询数据的时候调用.
把你放在构造方法里的那些东西放到requery()里去.
jtable就有一个updateUI();方法,可以更新的你jtable的显示.
因为你的TableModel的数据改变了的时候可能JTable还不知道.(写得好的TableModel应该具有这种功能.)

Answer 5

TO：maowu(猫呜)
谢谢！你的方法不错！搞定了！