Swing

Question

我必须为我的 Swing 项目设计一个 fleetmanagment 我创建了一个添加按钮，但我不知道必须制作一个删除按钮有什么帮助吗？这是我的 addbutton 代码。

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());
        }
    });

编辑！

数组列表代码

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。无需使用 setListData() 方法重新创建 ListModel。

应该直接对 ListModel 进行更新。

阅读 How to Use Lists 上的 Swing 教程部分。 ListDemo 示例向您展示了如何使用 "Hire" 和 "Fire" 按钮从 ListModel 获取 "add" 和 "remove" 项。

Swing - 添加按钮JList

Swing - Add button JList

java

awt