Can I use Java in React Native?

With React Native, you create one codebase that works on both Android and iOS . And it doesn’t just “work”—it compiles to native Java and Swift code. Specifically, React Native creates a bridge between web UI components and their native Java/Swift counterparts.

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What does native module mean?

In node, most modules are written in javascript. Some modules, like the fs module are written in C/C++, as you can’t edit files from plain javascript. IIRC, these modules are called ‘native’ because the code for these modules is slightly different depending on the OS node runs on .

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