如何将JList对象添加到BorderLayout类型面板？

Question

I'm having trouble trying to add a JList to the WEST side of my panel.

I was able to successfully add a text field and search button on the NORTH by using another panel and adding it to the original panel.

JPanel panelShop = new JPanel();

    // Example of items in the scrollbar list
    String[] results = { "Result 1", "Result 2", "Result 3", "Result 4"};
    JList searchList = new JList(results);
    searchList.setLayoutOrientation(JList.VERTICAL);
    // Sets the number of items to display without requiring to scroll
    //searchList.setVisibleRowCount(4);
    panelShop.add(searchList, BorderLayout.WEST);

The problem is the last line of code, when I'm trying to add the JList to the WEST border of the original panel.

Nothing shows up.

Thanks!

Answer 1

try this

public class TextJpanel extends JFrame {

public TextJpanel() {
    JPanel panelShop = new JPanel();
    panelShop.setLayout(new GridLayout());
    // Example of items in the scrollbar list
    String[] results = { "Result 1", "Result 2", "Result 3", "Result 4" };
    JList searchList = new JList(results);
    searchList.setLayoutOrientation(JList.VERTICAL);
    // Sets the number of items to display without requiring to scroll
    // searchList.setVisibleRowCount(4);
    panelShop.add(searchList, BorderLayout.WEST);
    add(panelShop);
}

public static void main(String[] args) {
    TextJpanel test = new TextJpanel();
    test.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    test.setSize(200, 200);
    test.setVisible(true);

}
}

make sure if you want to use the gridlayout for a JPanel then u have to set a GridLayout manager to this panel.