diff --git a/PCL.Mac.Core/Managers/JavaManager.swift b/PCL.Mac.Core/Managers/JavaManager.swift
index 1ff0c32..db0e641 100644
--- a/PCL.Mac.Core/Managers/JavaManager.swift
+++ b/PCL.Mac.Core/Managers/JavaManager.swift
@@ -19,6 +19,14 @@ public final class JavaManager {
     private init() {
         do {
             self.javaRuntimes = try JavaSearcher.search()
+            log("Java 搜索完成，共 \(javaRuntimes.count) 个：")
+            for javaRuntime in javaRuntimes {
+                let type: String = .init(describing: javaRuntime.type).padding(toLength: 4, withPad: " ", startingAt: 0)
+                let version: String = .init(describing: javaRuntime.version).padding(toLength: 10, withPad: " ", startingAt: 0)
+                let arch: String = .init(describing: javaRuntime.architecture).padding(toLength: 8, withPad: " ", startingAt: 0)
+                let impl: String = javaRuntime.implementor.padding(toLength: 24, withPad: " ", startingAt: 0)
+                log("\(type) \(version)\t\(arch)\t\(impl)\t\(javaRuntime.executableURL.path)")
+            }
         } catch {
             err("搜索 Java 失败：\(error.localizedDescription)")
             self.javaRuntimes = []
diff --git a/PCL.Mac.Core/Models/JavaRuntime.swift b/PCL.Mac.Core/Models/JavaRuntime.swift
index 692301c..517134d 100644
--- a/PCL.Mac.Core/Models/JavaRuntime.swift
+++ b/PCL.Mac.Core/Models/JavaRuntime.swift
@@ -21,7 +21,14 @@ public struct JavaRuntime {
     /// `java` 可执行文件 URL。
     public let executableURL: URL
     
-    public enum JavaType {
+    public enum JavaType: CustomStringConvertible {
         case jdk, jre
+        
+        public var description: String {
+            switch self {
+            case .jdk: "JDK"
+            case .jre: "JRE"
+            }
+        }
     }
 }
diff --git a/PCL.Mac.Core/Services/JavaSearcher.swift b/PCL.Mac.Core/Services/JavaSearcher.swift
index 4b05b17..3126e01 100644
--- a/PCL.Mac.Core/Services/JavaSearcher.swift
+++ b/PCL.Mac.Core/Services/JavaSearcher.swift
@@ -120,14 +120,21 @@ public enum JavaSearcher {
     private static func findJavaBundles() throws -> [URL] {
         var bundleDirectories: [URL] = []
         
-        for directory in javaDirectories {
+        for directory in javaDirectories where FileManager.default.fileExists(atPath: directory.path) {
             bundleDirectories.append(contentsOf: try FileManager.default.contentsOfDirectory(at: directory, includingPropertiesForKeys: nil))
         }
         // Homebrew
-        let homebrewDirectories: [URL] = try FileManager.default.contentsOfDirectory(at: URL(fileURLWithPath: "/opt/homebrew/opt"), includingPropertiesForKeys: nil)
-            .filter { $0.lastPathComponent.starts(with: "openjdk@") }
-        for directory in homebrewDirectories {
-            bundleDirectories.append(directory.appending(path: "libexec").appending(path: "openjdk.jdk"))
+        let homebrewRoot: URL = .init(fileURLWithPath: "/opt/homebrew/opt")
+        if FileManager.default.fileExists(atPath: homebrewRoot.path) {
+            do {
+                let homebrewDirectories: [URL] = try FileManager.default.contentsOfDirectory(at: homebrewRoot, includingPropertiesForKeys: nil)
+                    .filter { $0.lastPathComponent.starts(with: "openjdk@") }
+                for directory in homebrewDirectories {
+                    bundleDirectories.append(directory.appending(path: "libexec").appending(path: "openjdk.jdk"))
+                }
+            } catch {
+                err("搜索 Homebrew 目录失败：\(error.localizedDescription)")
+            }
         }
         return bundleDirectories.filter { FileManager.default.fileExists(atPath: $0.appending(path: "Contents/Home/release").path) }
     }
diff --git a/PCL.Mac/App/AppDelegate.swift b/PCL.Mac/App/AppDelegate.swift
index c073931..4c01b84 100644
--- a/PCL.Mac/App/AppDelegate.swift
+++ b/PCL.Mac/App/AppDelegate.swift
@@ -45,6 +45,7 @@ class AppDelegate: NSObject, NSApplicationDelegate {
             try SwiftScaffolding.Logger.enableLogging(url: URLConstants.logsDirectoryURL.appending(path: "swift-scaffolding.log"))
         }
         _ = LauncherConfig.shared
+        _ = JavaManager.shared
         executeTask("清理临时文件") {
             for url in try FileManager.default.contentsOfDirectory(at: URLConstants.tempURL, includingPropertiesForKeys: nil) {
                 try FileManager.default.removeItem(at: url)