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我注意到微软的 .NET Framework 4.x 和甲骨文的 JDK 8.x 系列之间有很强的相似之处。尽管新版本不断推出——如 .NET Core、.NET 6/7/8，JDK 11/17/21——这些旧版本却依然顽强存在。原因有几个： - 企业使用广泛，特别是在中型企业和中小型企业中。 - 行业惯性——团队在没有强有力的商业理由的情况下，不愿意重写已经在运行的系统。 - 在某些情况下，旧技术栈更稳定，经过“实战检验”，特别是对于像 WinForms 或厚客户端应用这样的用例。有点讽刺的是，即使在今天，新的 Windows 安装中默认的 .NET 版本仍然是 4.6（或相近版本），而不是闪亮的新 .NET 8/9。与此同时，甲骨文仍然提供 JDK 8——尽管是在付费支持的框架下——就像微软继续通过 Windows 更新为 .NET 4.x 提供补丁一样。最终，这些旧版本将会被淘汰。但考虑到它们的稳定性和广泛的工业应用，我觉得那一天可能是几十年而不是几年后。我很想听听你的看法——你认为这个过渡将如何展开？有没有好的例子显示团队成功地从 4.x 或 8.x 迁移？

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I've noticed a strong parallel between Microsoft's .NET Framework 4.x and Oracle's JDK 8.x series. Even though newer versions keep rolling out — .NET Core, .NET 6/7/8, JDK 11/17/21 — these older versions just won’t die.A few reasons:- Heavy enterprise usage, especially in midcaps and MSMEs.- Industry inertia — teams hesitate to rewrite working systems without a compelling business reason.- In some cases, older stacks are more stable and “battle-tested”, especially for use cases like WinForms or thick-client apps.It's kind of ironic that even today, the default .NET version baked into fresh Windows installs is 4.6 (or nearby), not the shiny new .NET 8/9. Meanwhile, Oracle still offers JDK 8 — albeit behind a paid support wall — much like Microsoft continues to patch .NET 4.x via Windows Update.Eventually, these older branches will be sunset. But given their stability and widespread industrial use, I feel like that day might be decades away rather than years.Curious to hear — how do you see this transition unfolding? And are there any good examples where teams actually migrated away from 4.x or 8.x successfully?

.NET 4.x 和 JDK 8.x 是企业软件的“僵尸”运行时吗？