java swing中combobox下拉框的选中事件怎么写?

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this.jComboBox1.getSelectedItem();
如果要让jTextField1的值随jComboBox1的选择变化，则在Event事件中选择“itemStateChanged”。JBuilder自动生成public void jComboBox1_itemStateChanged(ItemEvent e) {}后在该方法内添加代码格式如下：
public void jComboBox1_itemStateChanged(ItemEvent e) {
this.jTextField1.setText("");
this.jTextField1.setText(this.jComboBox1.getSelectedItem().toString());
}

//以下是JBuilder自动生成的事件监听器
class Frame1_jComboBox1_itemAdapter implements ItemListener {
private Frame1 adaptee;
Frame1_jComboBox1_itemAdapter(Frame1 adaptee) {
this.adaptee = adaptee;
}

public void itemStateChanged(ItemEvent e) {
adaptee.jComboBox1_itemStateChanged(e);
}
}

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