搖擺-添加按鈕JList

Question

我必須為我的Swing項目設計一個Fleetmanagment，我創建了一個添加按鈕，但我想不出必須使用刪除按鈕有什么幫助嗎？ 這是我的addbutton代碼。

addbutton.addActionListener(new ActionListener() {
    public void actionPerformed(ActionEvent event) {
            //make sure you preserve the previously selected list items
            int size = rightlist.getModel().getSize();
            Set objects = new LinkedHashSet();
            for (int i = 0; i < size; i++) {
                objects.add(rightlist.getModel().getElementAt(i));
            }
            objects.addAll(Arrays.asList(leftlistfreight.getSelectedValues()));

            rightlist.setListData(objects.toArray());
        }
    });

編輯！

ArrayList代碼

List<FreightBoats> freightBoat = new ArrayList<FreightBoats>();
    freightBoat.add(new FreightBoats("Boat Name : Stefan |","This Boat can Carry Conitainer : ",25000));
    freightBoat.add(new FreightBoats("Boat Name : Sminroff |","This Boat can Carry Conitainer : ",30000));
    freightBoat.add(new FreightBoats("Boat Name : Container 2000 |","This Boat can Carry Conitainer : ",2500));
    freightBoat.add(new FreightBoats("Boat Name : Windows |","This Boat can Carry Conitainer : ",25200));
    freightBoat.add(new FreightBoats("Boat Name : Unhuman |","This Boat can Carry Conitainer : ",200));
    freightBoat.add(new FreightBoats("Boat Name : ElPolako |","This Boat can Carry Conitainer : ",300000));
    freightBoat.add(new FreightBoats("Boat Name : BrainDead |","This Boat can Carry Conitainer : ",10000));
    freightBoat.add(new FreightBoats("Boat Name : WSHR | ","This Boat can Carry Conitainer : ",34005));
    freightBoat.add(new FreightBoats("Boat Name : Grolsch ","This Boat can Carry Conitainer : ",10565

Answer 1

不要玩Arrays或ArrayLists。 無需使用setListData（）方法重新創建ListModel。

相反，應直接對ListModel進行更新。

閱讀Swing教程中有關如何使用列表的部分 。 ListDemo示例向您展示如何通過使用“ Hire”和“ Fire”按鈕從ListModel中“添加”和“刪除”項目。