小编Hek*_*ade的帖子

我的代码在这里出了什么问题？

我正在尝试将mysql中的数据插入netbean中的组合框中

private void btnSandoghMousePressed(java.awt.event.MouseEvent evt) {                                        
    try {
        String query = "SELECT `AccountType` FROM `account`"; 
        con = Connect.ConnectDB();
        PreparedStatement stm = con.prepareStatement(query); 
        pst = con.prepareStatement(query);                
        ResultSet rs = pst.executeQuery(query);
        ArrayList<String> groupNames = new ArrayList<String>(); 
        while (rs.next()) { 
            String groupName = rs.getString(4); 
            groupNames.add(groupName);
        } 
        DefaultComboBoxModel model = new DefaultComboBoxModel(groupNames.toArray());
        cmbSemetarID.setModel(model);
        rs.close();    
    } catch (SQLException e) {
    System.err.println("Connection Error! it's about date");
    }
}

我正在使用 Google 时间线图表并想使用点击功能。只是当我点击彩色矩形或文本时，我想要一个 bootstrap Modal 出现。

google.charts.load("current", {packages:["timeline"]});
google.charts.setOnLoadCallback(drawChart);
function drawChart() {

var container = document.getElementById('example5.1');
var chart = new google.visualization.Timeline(container);
var dataTable = new google.visualization.DataTable();
dataTable.addColumn({ type: 'string', id: 'Room' });
dataTable.addColumn({ type: 'string', id: 'Name' });
dataTable.addColumn({ type: 'date', id: 'Start' });
dataTable.addColumn({ type: 'date', id: 'End' });
dataTable.addRows([
  [ 'Magnolia Room', 'Beginning JavaScript',       new Date(2017, 1, 30),  
new Date(2017, 2, 30) ],
  [ 'Learning for Life', 'Intermediate JavaScript',    new Date(2017, 3, 1),  
new Date(2017, 4, 30) ], …