Zed Java

This extension adds support for the Java language.

Configuration

Settings

You can optionally configure the version of JDTLS (the language server) to download or the class path that JDTLS uses in your Zed settings.

If Lombok support is enabled via JDTLS initialization option (initialization_options.settings.java.jdt.ls.lombokSupport.enabled), this extension will add Lombok as a javaagent to the JVM arguments for JDTLS. You can also configure the version of Lombok to use via setting the version at settings.lombok_version.

Below is a configuration example for this extension:

{
  "lsp": {
    "jdtls": {
      "settings": {
        "classpath": "/path/to/classes.jar:/path/to/more/classes/",
        "jdtls_version": "1.40.0", // This is the default value
        "lombok_version": "1.18.34" // Defaults to latest version if not set
      }
    }
  }
}

Initialization Options

There are also many more options you can pass directly to the language server, for example:

{
  "lsp": {
    "jdtls": {
      "initialization_options": {
        "bundles": [],
        "workspaceFolders": ["file:///home/snjeza/Project"],
        "settings": {
          "java": {
            "home": "/usr/local/jdk-9.0.1",
            "errors": {
              "incompleteClasspath": {
                "severity": "warning"
              }
            },
            "configuration": {
              "updateBuildConfiguration": "interactive",
              "maven": {
                "userSettings": null
              }
            },
            "trace": {
              "server": "verbose"
            },
            "import": {
              "gradle": {
                "enabled": true
              },
              "maven": {
                "enabled": true
              },
              "exclusions": [
                "**/node_modules/**",
                "**/.metadata/**",
                "**/archetype-resources/**",
                "**/META-INF/maven/**",
                "/**/test/**"
              ]
            },
            "lombokSupport": {
              "enabled": false // Set this to true to enable lombok support
            },
            "referencesCodeLens": {
              "enabled": false
            },
            "signatureHelp": {
              "enabled": false
            },
            "implementationsCodeLens": {
              "enabled": false
            },
            "format": {
              "enabled": true
            },
            "saveActions": {
              "organizeImports": false
            },
            "contentProvider": {
              "preferred": null
            },
            "autobuild": {
              "enabled": false
            },
            "completion": {
              "favoriteStaticMembers": [
                "org.junit.Assert.*",
                "org.junit.Assume.*",
                "org.junit.jupiter.api.Assertions.*",
                "org.junit.jupiter.api.Assumptions.*",
                "org.junit.jupiter.api.DynamicContainer.*",
                "org.junit.jupiter.api.DynamicTest.*"
              ],
              "importOrder": ["java", "javax", "com", "org"]
            }
          }
        }
      }
    }
  }
}

Example taken from JDTLS's initialization options wiki page.

You can see all the options JDTLS accepts here.