I'm not technical. Can I work with iDev?

Absolutely. Most of our clients are non-technical. Just tell us what you want the end result to look like — we handle all the technical details.

How much does it cost to hire iDev?

We quote individually based on project scope and complexity. Initial consultation is completely free — we give you a clear quote after understanding your needs. No fit, no charge.

How big is the iDev team?

A few core members, each capable of delivering full-stack independently. We flexibly assign people based on project scale and can run multiple projects simultaneously.

What happens after project delivery?

We provide complete code and documentation at handover. For ongoing feature development or maintenance, we offer monthly or per-project arrangements. Most clients choose long-term collaboration.

What if I'm not satisfied with the project midway?

We confirm with you at every stage before moving forward. If the direction is off, we adjust immediately. If it truly can't continue, completed work is settled normally and all code is yours.

我完全不懂技术，能合作吗？

当然可以。我们的大部分客户都不是技术背景。你只需要告诉我们你想要什么效果，技术实现的事情完全由我们来处理。

费用大概是多少？

根据项目复杂度和功能范围单独报价。初次沟通完全免费，我们会在了解需求后给出明确报价，合适再开始，不合适不收费。

团队有几个人？

核心团队几个人，都是能独立交付的全栈开发者。根据项目规模灵活安排人手，可以同时推进多个项目，不用等排期。

项目做完以后怎么维护？

交付时会提供完整的代码和文档。后续如果需要功能迭代或维护，可以按月或按次合作。大部分客户选择了长期合作。

做到一半不满意怎么办？

每个阶段交付前都会和你确认。如果方向不对，我们及时调整。如果实在无法继续，已完成的部分正常结算，代码归你。

Java 21到Java 23：新特性演进全景

Java 21 to 23: A Panoramic View of New Features

| iDev Tech | 2026-04-28T10:00:00

回顾Java 21至Java 23的重要新特性，包括虚拟线程、模式匹配、结构化并发和值类型。

Review of major features from Java 21 to 23 including virtual threads, pattern matching, structured concurrency, and value types.

Java 21 (LTS)虚拟线程（JEP 444）：轻量级线程，一个JVM可运行数百万个虚拟线程。模式匹配for switch（JEP 441）：switch表达式支持类型模式和守卫条件。Record Patterns（JEP 440）：在pattern matching中解构Record类型。字符串模板（Preview）。Java 22Unnamed Variables（JEP 456）：使用下划线_忽略不需要的变量。Stream Gatherers（Preview）：自定义中间操作扩展Stream API。Foreign Function & Memory API成为正式特性。Java 23Scoped Values（Preview）：替代ThreadLocal的更安全的线程间数据共享机制。Structured Concurrency（Preview）：将相关的并发任务视为一个工作单元，简化错误处理和取消操作。Primitive Types in Patterns。

Java 21 (LTS)Virtual Threads (JEP 444): Lightweight threads allowing millions per JVM. Pattern Matching for switch (JEP 441): switch expressions with type patterns and guards. Record Patterns (JEP 440): Destructuring Record types in pattern matching. String Templates (Preview).Java 22Unnamed Variables (JEP 456): Use underscore _ to ignore unneeded variables. Stream Gatherers (Preview): Custom intermediate operations extending Stream API. Foreign Function & Memory API becomes a standard feature.Java 23Scoped Values (Preview): A safer alternative to ThreadLocal for inter-thread data sharing. Structured Concurrency (Preview): Treating related concurrent tasks as a single unit of work, simplifying error handling and cancellation. Primitive Types in Patterns.

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