Vertical orientation of JTabbedPane titles when the tab placement is set to LEFT

Question

As you can see from the image below, the Java text is horizontal. What I would like to do is get a vertical orientation of the JTabbedPane Titles.

While googling, I found that the only way is to add extra library. But I was wondering if this can be done without any extra library?

I would like for Title1 and Title2 to be vertically oriented and not horizontally

Answer 1

You can use a JLabel with a custom LabelUI as described in this answer, it gives the result I expected:

JTabbedPane tabPane = new JTabbedPane(JTabbedPane.LEFT);

// Add tabs with no text
tabPane.addTab(null, component1);
tabPane.addTab(null, component2);

// Create vertical labels to render tab titles
JLabel labTab1 = new JLabel("Tab #1");
labTab1.setUI(new VerticalLabelUI(false)); // true/false to make it upwards/downwards
tabPane.setTabComponentAt(0, labTab1); // For component1

JLabel labTab2 = new JLabel("Tab #2");
labTab2.setUI(new VerticalLabelUI(false));
tabPane.setTabComponentAt(1, labTab2); // For component2