Sierra

Reduces verbose Java boilerplate by using XML markup, as shown in the GreetingTest example where XML is more readable and concise than the equivalent programmatic code.

Provides intuitive panels like RowPanel and ColumnPanel that simplify complex alignments, demonstrated in grid examples with precise cell positioning and spacing attributes.

Includes advanced UI elements such as charts, date pickers, and validated inputs not in standard Swing, illustrated in utility component examples like charts and suggestion pickers.

Supports modern styling and SVG icons through FlatLaf, enabling automatic theme adaptation, as seen in button groups and dark mode charts examples.