What is a JList?

What is a JList?

JList is a component that displays a set of Objects and allows the user to select one or more items . JList inherits JComponent class. JList is a easy way to display an array of Vectors . JList(E [ ] l) : creates an new list with the elements of the array.

How do you add a JList?

Populate the JList with a DefaultListModel, not a vector, and have the model visible in the class. Then simply call addElement on the list model to add items to it.

How do I iterate through a JList?

This can be done by calling JList ‘s getModel() method which return a ListModel object. From the ListModel we can get the items size, and we can iterate the entire items of the JList component.

How do I make my JList scrollable?

JList doesn’t support scrolling directly. To create a scrolling list you make the JList the viewport view of a JScrollPane. For example: JScrollPane scrollPane = new JScrollPane(dataList); // Or in two steps: JScrollPane scrollPane = new JScrollPane(); scrollPane.

Which method of a JList returns if no item in the list is selected?

getSelectedIndex() method
to determine which item is selected, use the getSelectedIndex() method of the JList. This returns the index of the item selected by the user, or -1 if no item is selected.

What is JScrollPane in Java Swing?

A JscrollPane is used to make scrollable view of a component. When screen size is limited, we use a scroll pane to display a large component or a component whose size can change dynamically.

How do I set the height on JScrollPane?

The solution is to limit the vertical space the JScrollPanel demands using e.g. jScrollPane. setMaxmimumSize(new Dimension(1000, 50)) .

What is jlist in Java with example?

Java Swing | JList with examples. JList is part of Java Swing package . JList is a component that displays a set of Objects and allows the user to select one or more items . JList inherits JComponent class. JList is a easy way to display an array of Vectors .

What is the difference between listmodel and listselectionmodel in Java?

JList: ListModel and ListSelectionModel. The ListModel handles data. ListSelectionModel works with the GUI. A single-selection JList. The items can be arbitrary objects. The toString () method of the objects is displayed in the list component.

What is defaultlistmodel in JFrame in Java?

DefaultListModel is defined in javax.swing package. Here in the below example, we will create a JFrame being split into two halves horizontally. The left will contain the list of some items and the right half will show the respective price of the items in the adjacent list.

What is the selection mode in jlist?

The selection mode defines the way elements can be selected. There are totally 3 selection modes available to be set for JList: This mode specifies that only a single item can be selected at any point of time. This mode specifies that multiple items can be selected, but they have to be contiguous.