e836. 设置JTabbedPane中卡片的提示语

There are two ways to set a tool tip on a tab. The first is to specify it when the tab is created; the second way is to set it using JTabbedPane.setToolTipTextAt().

    // Create a tabbed pane
    JTabbedPane pane = new JTabbedPane();
    
    // Add a tab with a tool tip
    String label = "Tab Label";
    String tooltip = "Tool Tip Text";
    pane.addTab(label, null, component, tooltip);
    
    // Get index of new tab
    int index = pane.getTabCount()-1;
    
    // Get current tool tip
    tooltip = pane.getToolTipTextAt(index);
    
    // Change tool tip
    tooltip = "New Tool Tip Text";
    pane.setToolTipTextAt(index, tooltip);

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