JList怎么加组件

加组件？加什么组件？按钮？是不是这样啊

String[] months = {"1月","2月","3月","4月","5月","6月","7月","8月","9月","10月","11月","12月"}

monthList = new jlist(months)

monthList.setSelectionMode(ListSelectionModel.MULTIPLE_INTERVAL_SELECTION)// 设置选择模式

monthList.setFixedCellHeight(20) // 设置选项高度

monthList.setVisibleRowCount(6) // 设置可见个数

monthList.setSelectionBackground(Color.GREEN) // 设置被选中项的背景颜色

monthList.setSelectionForeground(Color.RED)// 设置被选中项的字体颜色

默认的就是JLabel了。

如果你要该我给你一个样板。

public class myList extends JPanel {

private static final long serialVersionUID = 1L

JList mList

DefaultListModel mode

public myList() {

setLayout(new BorderLayout())

mode = new DefaultListModel()

for (int i = 0i <10i++) {

mode.addElement("123")

}

mList = new JList(mode)

mList.setCellRenderer(new MyCellRenderer())

add(new JScrollPane(mList), BorderLayout.CENTER)

}

public static void main(String[] args) {

JFrame jf = new JFrame()

jf.add(new myList(), BorderLayout.CENTER)

jf.pack()

jf.setVisible(true)

jf.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE)

}

class MyCellRenderer extends JButton implements ListCellRenderer {

public MyCellRenderer() {

setOpaque(true)

}

public Component getListCellRendererComponent(JList list,

Object value,

int index,

boolean isSelected,

boolean cellHasFocus) {

setText(value.toString())

Color background

Color foreground

// check if this cell represents the current DnD drop location

JList.DropLocation dropLocation = list.getDropLocation()

if (dropLocation != null &&!dropLocation.isInsert() &&dropLocation.getIndex() == index) {

background = Color.BLUE

foreground = Color.WHITE

// check if this cell is selected

} else if (isSelected) {

background = Color.RED

foreground = Color.WHITE

// unselected, and not the DnD drop location

} else {

background = Color.WHITE

foreground = Color.BLACK

}

setBackground(background)

setForeground(foreground)

return this

}

}

}

listCellRenderer是控制显示的，我这里是button，你也可以换成别的，不建议使用jPanel，panel无法显示字体，所以你要自己弄个控件显示。

Model只负责保存数据，和界面无关，不要把界面也放到这里了。

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