由 Flux.1 Dev 生成的 FLUX AI 图像

A vibrant, dynamic thumbnail design concept: Left: Java logo, bold red "JAVA" above smaller "Beginners Tutorial," all against a deep blue gradient background. Right: A stylized code editor window displaying simple Java code, overlaid with a play button icon. A stopwatch subtly suggests speed and simplicity. The overall style is a modern, clean, and engaging design, evoking a sense of excitement and accessibility for beginners.