NetBeans使用介绍（三）

第五章
  5.1 Swing列表
JList
创建代码：
String [] fruit={“apple”,”pear”,”orange”,”banana”}
JList myJList=new JList(fruit);
构造器：
JList()
JList(Object [] listData)
JList(ListModel dataModel)
JList(Vector listData)

常见方法：
getSelecttionForegroud()
setSelectionForeGroud(Color selectionForegroud)
getSelectionBackgroud()
setSelectionBackgroud(Color selectionBackgroud)
getModel()
setModel(ListModel model)
setListData(Object[] listData)
setListData(Vector listData)
setSelectionMode(int selectionMode)
getSelectionMode()
getMaxSelectionIndex()
getMinSelectionIndex()
isSelectedeIndex(int index)
isSelectionEmpty()
clearSelection()
getSelectedValues()

在NetBeans中使用
代码和运行图如下
private void jTextFieldCountryNameActionPerformed(java.awt.event.ActionEvent evt) {                                                     
// TODO 将在此处添加您的处理代码：
        String countryName=this.jTextFieldCountryName.getText().trim();
        if(countryName !=null &&! countryName.equals("")){
            this.imageVector.add(countryName);
            this.jLabelActionMessage.setText("你将"+countryName+"添加到列表中");
            this.jListCountryList.setListData(this.imageVector);
           
        }else{this.jLabelActionMessage.setText("请先输入内容再添加");
        }
    }                                                    

    private void jButtonDeleteActionPerformed(java.awt.event.ActionEvent evt) {                                             
// TODO 将在此处添加您的处理代码：
        String countryName=(String)this.jListCountryList.getSelectedValue();
        if(countryName !=null){
            this.imageVector.remove(countryName);
            this.jListCountryList.setListData(imageVector);
            this.jLabelActionMessage.setText("你将"+countryName+"从列表中删除");
        }else{
            this.jLabelActionMessage.setText("请先选择一个选项");
        }
    }                                            

    private void jButtonAddActionPerformed(java.awt.event.ActionEvent evt) {                                          
// TODO 将在此处添加您的处理代码：
        String countryName=this.jTextFieldCountryName.getText().trim();
        if(countryName !=null &&! countryName.equals("")){
            this.imageVector.add(countryName);
            this.jLabelActionMessage.setText("你将"+countryName+"添加到列表中");
            this.jListCountryList.setListData(this.imageVector);
           
        }else{
            this.jLabelActionMessage.setText("请先输入内容再添加");
        }
    }                                         

    private void jListCountryListValueChanged(javax.swing.event.ListSelectionEvent evt) {                                             
// TODO 将在此处添加您的处理代码：
        String choosedCountry=(String)this.jListCountryList.getSelectedValue();
        this.jLabelActionMessage.setText("你从列表中选择"+choosedCountry+"选项");
    }                   
 

Swing组合框(JComboBox)

构造器：

JComboBox()

JComboBox(Object[] items)

JComboBox(Vector items)

JComboBox(ComboBoxModel model)

 

常用方法：

setModel(ComboBoxModel aModel)

getModel()

setSelectedItem(Object anObject)

getSelectedItem()

setSelectedIndex(int anIndex)

getSelectedIndex()

addItem(Object anObject)

removeItem(Object anObject)

removeItemAt(int anIndex)

removeAllItems()

showPopup()

hidePopup()

setPopupVisible(Boolean v)

isPopupVisible()

getItemCount()

getItemAt(int index)

 

在NetBeans中使用

代码和运行图如下

//先添加一个JComboBox，然后选择model属性，删除原来的项，添加新的项。

private void jComboBoxLoverItemStateChanged(java.awt.event.ItemEvent evt) {                                                

// TODO 将在此处添加您的处理代码：

       String favor=(String)this.jComboBoxLover.getSelectedItem();

        this.jLabel1.setText("你喜欢"+favor);

      

    } 

Swing组合框(JComboBox)
构造器：
JComboBox()
JComboBox(Object[] items)
JComboBox(Vector items)
JComboBox(ComboBoxModel model)

常用方法：
setModel(ComboBoxModel aModel)
getModel()
setSelectedItem(Object anObject)
getSelectedItem()
setSelectedIndex(int anIndex)
getSelectedIndex()
addItem(Object anObject)
removeItem(Object anObject)
removeItemAt(int anIndex)
removeAllItems()
showPopup()
hidePopup()
setPopupVisible(Boolean v)
isPopupVisible()
getItemCount()
getItemAt(int index)

在NetBeans中使用
代码和运行图如下
//先添加一个JComboBox，然后选择model属性，删除原来的项，添加新的项。
private void jComboBoxLoverItemStateChanged(java.awt.event.ItemEvent evt) {                                               
// TODO 将在此处添加您的处理代码：
       String favor=(String)this.jComboBoxLover.getSelectedItem();
        this.jLabel1.setText("你喜欢"+favor);
      
    } 
Swing分割窗口（JSplitPane）
用于将一个窗口分割成两个部分。
构造器
JSplitPane()  
JSplitPane(int newOrientation)
JSplitPane( int newOrientation,Boolean newContinuousLayout)

常用方法：
setDividerSize(int newSize)
getDividerSize()
setLeftComponent(Component comp)
Component getLeftComponent()