我在使用两个组合框来影响一个项目的状态时遇到了一些麻烦。每个组合框的值在1到99之间,我试图改变每个组合框中的值,组合它们,然后在jlabel上显示这个值。到目前为止,我只能看到第一个组合框似乎对公式有影响。我已将其简化为以下内容,并感谢您的帮助:)
private int value1int;
value1.addItemListener(new ItemListener()
{
public void itemStateChanged(ItemEvent ex)
{
if (ex.getStateChange() == ItemEvent.SELECTED)
{
// assume single selection
int value1int = (Integer)ex.getItemSelectable().getSelectedObjects()[0];
}
}
});
value2.addItemListener(new ItemListener()
{
public void itemStateChanged(ItemEvent exs)
{
if (exs.getStateChange() == ItemEvent.SELECTED)
{
// assume single selection
int value2int = (Integer)exs.getItemSelectable().getSelectedObjects()[0];
}
}
});
overallValue2.setText((Integer.toString(value1int + value2int)));
overallValue2.revalidate();
你必须这样做:
public class GUI extends JFrame ...
private int labelVal;
...
// combobox events - The same code to both comboboxes must works
public void itemStateChanged(ItemEvent exs)
{
if (exs.getStateChange() == ItemEvent.SELECTED)
{
// assume single selection
int aux = (Integer)combobox1.getSelectedItem()+(Integer)combobox2.getSelectedItem();
int labelVal= aux;
}
}
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