小编典典

如何将MouseListeners添加到JList项目?

java

所以,我想要的JList是选择一个项目时要运行的另一段代码。但是我的问题是,如何MouseListeners对特定JList项目实施?

这是我的代码:

public void launchFrame() {
        String selection1 = "";
        String[]mainContents = {"Vehicles","Bikes/Bicycles","Boats","Houses","Businesses","Objects","Jobs","Ranks","Licenses"};
        String[]selectionVehicles = {};
        String[]selectionBikesBicycles = {};
        String[]selectionBoats = {};
        String[]selectionHouses = {};
        String[]selectionBusinesses = {};
        String[]selectionObjects = {};
        String[]selectionJobs = {};
        String[]selectionRanks = {};
        String[]selectionLicenses = {};
        JFrame f = new JFrame("MTG SAMP Server Reference");
        JList listAll = new JList(mainContents);
        f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        f.setVisible(true);
        f.pack();
        f.setSize(1200, 800);
        f.setLocationRelativeTo(null);
        f.add(listAll);
        listAll.setSize(250, 250);
        listAll.setLocation(50, 50);
        switch (selection1) {
            case "Vehicles":
                JList listVehicles = new JList(mainContents);
                f.add(listVehicles);
                listVehicles.setSize(250, 250);
                listVehicles.setLocation(350, 50);
                f.repaint();
                f.revalidate();
                break;
            case "Bikes/Bicycles":
                JList listBikesBicycles = new JList(mainContents);
                f.add(listBikesBicycles);
                listBikesBicycles.setSize(250, 250);
                listBikesBicycles.setLocation(350, 50);
                f.repaint();
                f.revalidate();
                break;
            case "Boats":
                JList listBoats = new JList(mainContents);
                f.add(listBoats);
                listBoats.setSize(250, 250);
                listBoats.setLocation(350, 50);
                f.repaint();
                f.revalidate();
                break;
            case "Houses":
                JList listHouses = new JList(mainContents);
                f.add(listHouses);
                listHouses.setSize(250, 250);
                listHouses.setLocation(350, 50);
                f.repaint();
                f.revalidate();
                break;
            case "Businesses":
                JList listBusinesses = new JList(mainContents);
                f.add(listBusinesses);
                listBusinesses.setSize(250, 250);
                listBusinesses.setLocation(350, 50);
                f.repaint();
                f.revalidate();
                break;
            case "Objects":
                JList listObjects = new JList(mainContents);
                f.add(listObjects);
                listObjects.setSize(250, 250);
                listObjects.setLocation(350, 50);
                f.repaint();
                f.revalidate();
                break;
            case "Jobs":
                JList listJobs = new JList(mainContents);
                f.add(listJobs);
                listJobs.setSize(250, 250);
                listJobs.setLocation(350, 50);
                f.repaint();
                f.revalidate();
                break;
            case "Ranks":
                JList listRanks = new JList(mainContents);
                f.add(listRanks);
                listRanks.setSize(250, 250);
                listRanks.setLocation(350, 50);
                f.repaint();
                f.revalidate();
                break;
            case "Licenses":
                JList listLicenses = new JList(mainContents);
                f.add(listLicenses);
                listLicenses.setSize(250, 250);
                listLicenses.setLocation(350, 50);
                f.repaint();
                f.revalidate();
                break;
        }
            Container contentPaneMain = f.getContentPane();
            contentPaneMain.add(new MTGSAMPServerReference());
        }

我该怎么做才能添加MouseListenersJList“车辆”,“自行车/自行车”,“船”,“房屋”,“企业”,“对象”,“工作”,“等级”和“许可证”项中?


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2020-11-30

共1个答案

小编典典

如果您希望在选择更改时发生某些事情,则不希望使用MouseListener,而希望使用ListSelectionListener。它不仅是正确的抽象,而且请记住,不使用鼠标就可以更改选择。如今,大多数计算机都配有键盘。

Swing教程中描述了如何使用它。

在您的侦听器内部,获取选定的元素,然后采取相应的行动。

2020-11-30