By default, all new tabs are enabled, which means the user can select them. A tab can be disabled to prevent the user from selecting it.

    // Create a tabbed pane

    JTabbedPane pane = new JTabbedPane();

    // Add a tab

    pane.addTab("Tab Label", component);

    // Get index of the new tab

    int index = pane.getTabCount()-1;

    // Determine whether the tab is enabled

    boolean enabled = pane.isEnabledAt(index);

    // Disable the tab

    pane.setEnabledAt(index, false);