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30 lis 2011 · The right way to set an item selected when the combobox is populated by some class' constructor (as @milosz posted): combobox.getModel().setSelectedItem(new ClassName(parameter1, parameter2)); In your case the code would be: test.getModel().setSelectedItem(new ComboItem(3, "banana")); edited May 16, 2016 at 16:38.
16 cze 2016 · I am trying to set the selected item by value. So I try creating another object, with same value(variable name d), and do setSelectedItem but it fails. When I try printing out the selectedItem, it doesn't print 'C C'. It prints the previously selected item 'B B' So how do set selectedItem by value? Do advice. Thanks so much!
1 cze 2022 · setSelectedItem(Object a): sets the selected item in the combo box display area to the object in the argument. setSelectedIndex(int a) : selects the item at index anIndex. setPopupVisible(boolean v) : sets the visibility of the popup.
petList.setSelectedIndex(4); petList.addActionListener(this); This combo box contains an array of strings, but you could just as easily use icons instead. To put anything else into a combo box or to customize how the items in a combo box look, you need to write a custom renderer.
public void setEditable(boolean aFlag) Determines whether the JComboBox field is editable. An editable JComboBox allows the user to type into the field or selected an item from the list to initialize the field, after which it can be edited. (The editing affects only the field, the list item remains intact.)
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); String[] selections = { "green", "red", "orange", "dark blue" }; JComboBox comboBox = new JComboBox(selections); comboBox.setSelectedIndex(1); System.out.println(comboBox.getSelectedItem()); frame.add(comboBox); frame.pack(); frame.setVisible(true); }
6 lip 2019 · Setting selected item (using the setSelectedItem() or setSelectedIndex() methods): // set selected item of type String: bookList.setSelectedItem("Head First Java"); // set selected item of a custom type Job: // the Job class must override the equals() method Job consultantJob = new Job("Consultant"); jobList.setSelectedItem(consultantJob ...
