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* fix(java): 重启后外部改动不增量编译导致 NoClassDefFoundError (#2527) * feat(scheme): support a selection foreground colour (#2446) Settings › Editor › Color Scheme › General › Editor gains a Selection foreground attribute next to Selection background, wired to a new --fg-editor-selection token. The editor paints selected text with it (.cm-openidea-selected, including the diff viewer); unset it keeps the previous rendering, with syntax colours showing through (token default: inherit). .icls import/export round trips it via SELECTION_FOREGROUND. * test(themes): palette themes inherit selection foreground from base Solarized/One keep the base default (preserve syntax colours on selection); record that intent in INHERITED_FROM_BASE. * fix(java): re-stamp mtime-preserving external edits before launch builds Launch fingerprints detect external edits via content hash, but the Maven rebuild that triggers is timestamp-incremental: sources whose mtime did not advance are skipped, so the rebuild compiles nothing and the stale snapshot is re-recorded as fresh. After an IDE restart the launch then reuses those stale classes (NoClassDefFoundError). Session::build now diffs the stored fingerprint against the fresh one, re-stamps (bumps mtime on) sources whose content changed while (length, mtime) stayed the same, and re-scans before building, so the rebuild actually recompiles them and the record written afterwards matches. Related to #2476 * feat(mybatis): navigate and complete #{} in annotation SQL (#2461) Annotation @Select/@Insert/@Update/@Delete SQL strings now resolve Definition, and complete parameter names after #{. Works without any XML (pure-annotation mappers). Also fixes parse_java splitting statements on braces/semicolons inside string literals. * feat(mybatis): silence clippy type-complexity with LitSpan alias
The IDE you know, rebuilt in Rust.
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OpenIDEA brings the IntelliJ IDEA way of working — its keymap, its tool windows, its search-everything habits — to a native app with a Rust core.
Editor, code insight, debugger, Git, terminal, database and HTTP clients, for 60+ languages. Builds for macOS, Windows and Linux.
Benchmark
Opening freqtrade (Python, ~770 files) with warm caches, median of 5 runs:
| OpenIDEA | IntelliJ IDEA 2026.2.3 | |
|---|---|---|
| Window with the project | 0.9 s | 3.1 s |
| Ready (CPU settled) | 1.1 s | 13.2 s |
| Memory (USS, all processes) | 169 MB | 2011 MB |
| CPU time until ready | 2.4 s | 47.9 s |
| Idle CPU | 4 % of a core | 7 % of a core |
| Quit | 0.3 s | 5.9 s |
A release build of OpenIDEA from main and IDEA with default settings and plugins, on
Windows 11, 32-core AMD, 62 GB RAM.
IDEA analyses Python more deeply, so "ready" doesn't mean the same work on
both sides. Both are measured from the outside, the same way: see
perf/compare to run it on your machine and projects.
Plugins
Plugins add actions, completion, quick fixes, tool windows, custom editors, themes, file icons and languages. They run as sandboxed WebAssembly components; themes, icon themes and languages need no code at all.
Install them from Settings › Plugins, or start your own with
openidea-plugin new — see Writing OpenIDEA plugins and
the official plugins. The plugin API is still a preview.
Community
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Discord — questions, feedback and release news.
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WeChat group — scan to join:
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Contributing: see CONTRIBUTING.md and the contributor docs.
License
Apache 2.0. Bundled third-party assets are listed in THIRD_PARTY_LICENSES.md.
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