Question

如何在这种情况下获取已添加到JList的String项的值？我的意思是V

String[] coinNames ={"Quarters","Dimes","Nickels","Pennies"};
JList coinList = new JList (coinNames);
coinList[0] == "Quarters" ???????

由于我显然不能像普通数组那样引用它，我怎样才能获得coinlist [0]的字符串值？

Answer 1

这是一个简单的示例，只获取JList的索引并显示所有JList。

int

Answer 2

coinList.getModel().getElementAt(0);

请阅读手册：http://docs.oracle.com/javase/8/docs/api/javax/swing/JList.html#getModel--

编辑：或者只是看一下该页面的操作示例：http://docs.oracle.com/javase/8/docs/api/javax/swing/JList.html

 // Create a JList that displays strings from an array

 String[] data = {"one", "two", "three", "four"};
 JList<String> myList = new JList<String>(data);

 // Create a JList that displays the superclasses of JList.class, by
 // creating it with a Vector populated with this data

 Vector<Class<?>> superClasses = new Vector<Class<?>>();
 Class<JList> rootClass = javax.swing.JList.class;
 for(Class<?> cls = rootClass; cls != null; cls = cls.getSuperclass()) {
     superClasses.addElement(cls);
 }
 JList<Class<?>> myList = new JList<Class<?>>(superClasses);

 // The automatically created model is stored in JList's "model"
 // property, which you can retrieve

 ListModel<Class<?>> model = myList.getModel();
 for(int i = 0; i < model.getSize(); i++) {
     System.out.println(model.getElementAt(i));
 }

在Jlist中获取String的值

2 个答案: