codex-java-lsp
Server Configuration
Describes the environment variables required to run the server.
| Name | Required | Description | Default |
|---|---|---|---|
| JDTLS_BIN | No | 指定 jdtls 可执行文件。 | |
| JDTLS_FILEWATCH | No | 设为 `off` 可关闭 JDT LS 文件监听。 | |
| JDTLS_JAVA_HOME | No | 指定运行 JDT LS 的 Java home。 | |
| JAVA_LSP_JDTLS_XMX | No | 覆盖 JDT LS heap，例如 `2g`。 | |
| JAVA_LSP_LOMBOK_JAR | No | 指定 Lombok javaagent。 | |
| JAVA_LSP_IDLE_TTL_MS | No | repo 空闲后自动停止 JDT LS 的时间。 | |
| JAVA_LSP_PROJECTS_JSON | No | 覆盖 projects.json 路径。 | |
| JAVA_LSP_MAX_ACTIVE_REPOS | No | 限制同时活跃的 JDT LS repo 数。 | |
| CODEX_JAVA_LSP_RUNTIME_DIR | No | 覆盖用户级 runtime 目录。 | |
| JAVA_LSP_PROJECT_JAVA_HOME | No | 指定默认项目 JDK。 | |
| JAVA_LSP_PROJECT_JAVA_HOME_<ALIAS> | No | 为某个 alias 指定项目 JDK，alias 会转成大写并把非字母数字替换成 `_`。 | |
| JAVA_LSP_DOCUMENT_SYMBOL_TIMEOUT_MS | No | documentSymbol warm-index 等待预算。 | |
| JAVA_LSP_DOCUMENT_SYMBOL_GLOBAL_CONCURRENCY | No | documentSymbol 全局并发。 | |
| JAVA_LSP_DOCUMENT_SYMBOL_PER_REPO_CONCURRENCY | No | documentSymbol 单 repo 并发。 |
Capabilities
Features and capabilities supported by this server
| Capability | Details |
|---|---|
| tools | {
"listChanged": true
} |
Tools
Functions exposed to the LLM to take actions
| Name | Description |
|---|---|
| java_statusB | Return repo, JDT LS, watcher, source index, and router cache status; pass start=true to start JDT LS. |
| java_impactC | Build a compact Java impact plan with source-index routing, internal rg summary, optional bounded LSP enrichment, and read plan. |
| java_symbolB | Search workspace symbols by query or inspect hover/definition/implementation at a file position. |
| java_referencesC | Return summary-only references for a precise Java symbol position. |
| java_diagnosticsC | Open Java files and return JDT LS diagnostics after a short wait. |
| java_restartC | Restart the current JDT LS session; clear cache only when explicitly requested. |
| java_shutdownB | Stop the current JDT LS child process while keeping the MCP server alive. |
Prompts
Interactive templates invoked by user choice
| Name | Description |
|---|---|
No prompts | |
Resources
Contextual data attached and managed by the client
| Name | Description |
|---|---|
No resources | |
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