javaswing中combobox下拉框的选中事件怎么写?

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)

}

}

用initComponent: function() 来加事件

给你看一段我们项目中代码吧!

Ext.extend(Ext.tree.TreePanel, {

title: '机构列表',

header:false,

rootVisible:false,

collapseFirst:false,

autoScroll: true,

bodyBorder:false,

// height: document.documentElement.clientHeight-111,

initComponent: function() {

this.root = new Ext.tree.AsyncTreeNode({

text:'员工管理',

id:'root',

expanded:true

})

this.loader = new Ext.tree.TreeLoader({dataUrl:NGBOSS.APP_URL+'/employees/treeList?organizationStatus=1'})

com.zjcy.ngboss.sys.employee.grid.TreePanelUi.superclass.initComponent.call(this)

}

})

Private Sub ComboBox_Click()

Select Case ComboBox.Text

    Case "List1"

        '进行………… *** 作

    Case "List2"

        '进行………… *** 作

    Case "List3"

        '进行………… *** 作

End Select

End Sub

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