Java 如何确定选择了哪个JList项目?
我希望根据单击的JList项目运行特定的代码位 但我如何确定选择了哪个项目 代码如下:Java 如何确定选择了哪个JList项目?,java,swing,user-interface,listener,jlist,Java,Swing,User Interface,Listener,Jlist,我希望根据单击的JList项目运行特定的代码位 但我如何确定选择了哪个项目 代码如下: public void launchFrame() { String selection1 = ""; String[]mainContents = {"Vehicles","Bikes/Bicycles","Boats","Houses","Businesses","Objects","Jobs","Ranks","Licenses"}; String[]se
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());
}
引号中的每组文本表示一个单独的项
因此,如果单击了Vehicles,我如何让它将selection1设置为Vehicles?假设您使用的是Java 7,如果之前您无法在switch语句中使用字符串:
selection1 = (String)listAll.getSelectedValue();
您已经为这个几乎完全相同的问题添加了答案,并接受了它。你为什么再问一次?再问一次没有意义。投票结束这个问题。另一个问题只是部分答案。如果我还有问题,为什么不继续问下去?@JBNizet和hovercraftfullofels,UsabilityOrDie似乎有正确的答案。这就是为什么重新提问会有帮助。在了解情况之前做出判断并不总是明智的。考虑一下给他们一个机会,然后把他们击倒。把人们的问题打倒是没有帮助的,因为这正是这个网站的目的。下次请重新考虑你的行为!是的,我正在使用Java7。这看起来像我需要的,我会试试的!谢谢