從數據庫填充JTable

Question

我寫了這個簡單的代碼來填充jTable1 ，但是它只是用數據庫的最后一行填充jTable1 。

String SQL = "select * from usernames";
ResultSet rs = stmt.executeQuery(SQL);
String[] columnNames = {"Full Name", "Email"}; 
String n = "",e = "";
while(rs.next()) { 
    n = rs.getString("Full_Name");
    e = rs.getString("Email");
    Object[][]data = {{n,e}}; 
    jTable1 = new JTable(data, columnNames);

}       

Answer 1

我用這段代碼解決了

String n = "",e = "";      

DefaultTableModel model;
model = new DefaultTableModel(); 
jTable1 = new  JTable(model);

model.addColumn("Full Name");
model.addColumn("Email");

while(rs.next())  
{
    n = rs.getString("Full_Name");    
    e= rs.getString("Email");   
    model.addRow(new Object[]{n,e});
}

Answer 2

是的，它將始終是最后一行，因為在while循環中，您正在創建一個新的JTable，而不是將一行附加到現有的JTable中。 所以這樣做

// Code
DefaultTableModel model = (DefaultTableModel) jTable1.getModel();
while(rs.next())
{ 
    n = rs.getString("Full_Name");
    e= rs.getString("Email");
    //Object[][]data={{n,e}};
    // This will add row from the DB as the last row in the JTable. 
    model.insertRow(jtable1.getRowCount(), new Object[] {n, e});
}