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如何在Java中實現自動刷新

while (rs.next()) {

row data[I][0]= RS . getstring(" exam _ No ");

row data[I][1]= RS . getstring(" student _ ID ");

row data[I][2]= RS . getstring(" student _ Name ");

row data[I][3]= RS . getstring(" class _ NO ");

rowData[i][4] = rs.getString("課程名稱");

row data[I][5]= RS . getstring(" result ");

i++;

}

//在此添加以下代碼:

xxxxxxxxxxxx _ model . firetable data changed();

//或者:

table . set model(new xxxxxxxxxx table model(row data,.......));

溶液1:

如果您的表模型是從AbstractTableModel擴展而來的,

表格數據更改後,調用模型的fireTableDataChanged()方法;

解決方案2:

重置表格模型。

例如:

table . set model(new DefaultTableModel(data,column names));

下面是我寫的壹個例子。

導入Java . awt . *;

導入Java . awt . event . *;

導入javax . swing . *;

導入javax . swing . table . *;

公共類JTableTest

{

公共靜態void main(String args[])

{

JTableTestFrame f = new JTableTestFrame();

f . setdefaultcloseoperation(JFrame。EXIT _ ON _ CLOSE);

}

}

JTableTestFrame類擴展了JFrame

{

私有JTable表= null

private ArrayTableModel ATM = null;

private JButton reload = null

private final static String[]column names = { " Number "," addend "," augend "," sum " };

private int start = 0;

公共JTableTestFrame()

{

ATM = new ArrayTableModel(column names);

table = new JTable(ATM);

Reload = new JButton(" Reload ");

reload.addActionListener(新的ActionListener()

{

公共無效操作已執行(操作事件e)

{

重載();

}

});

JPanel p = new JPanel(new BorderLayout());

p.add(new JLabel("JTable Test "),BorderLayout。北);

p.add(new JScrollPane(table),BorderLayout。中心);

p.add(reload,BorderLayout。南);

this . add(p);

this.setSize(300,300);

this . set visible(true);

}

公共void重載()

{

int rows = 10;

int cols = columnNames.length

Object[][]data =新對象[rows][cols];

for(int I = 0;我& lt行;i++)

{

start+= I;

data[I][0]= start;

data[I][1]= start+1;

data[I][2]= start+2;

data[I][3]= start * 2+3;

}

atm.setData(數據);

ATM . firetabledatachanged();

}

}

類ArrayTableModel擴展了AbstractTableModel

{

私有字符串[]column names = null;

私有對象[][]數據=空;

public array table model(String[]column names)

{

this . column names = column names;

this.data =新對象[1][column names . length];

}

public array table model(Object[][]data,String[] columnNames)

{

this.data = data

this . column names = column names;

}

公共對象getValueAt(int r,int c)

{

return this . data[r][c];

}

public int getRowCount()

{

返回this . data . length;

}

public int getColumnCount()

{

返回this . column names . length;

}

public String[]get column names(){

返回列名;

}

公共字符串getColumnName(int c)

{

返回this.columnNames[c]。toString();

}

public void set column names(String[]column names){

this . column names = column names;

}

公共對象[][] getData() {

返回數據;

}

public void setData(Object[][]data){

this.data = data

}

}

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