Question

我想检查JDK是否已安装。

我不想检查C:\Program Files\Java\jdk1.8.0_25是否存在，因为用户可能安装了旧版本。我想检查C:\Program Files\Java 中是否包含字符串jdk。

我能这样做吗？

Answer 1

是

步骤1：获取所有目录名称的列表。 Link

步骤2：检查一个或多个是否包含searchstring。 Link

Answer 2

Dim Installed = (
    From i In My.Computer.FileSystem.GetDirectories("C:\Program Files\Java")
    Where i.ToLower Like "*jdk*").Any

Answer 3

简单的注册表检查。您需要添加错误捕获等。

Dim rk As RegistryKey
Dim sk As RegistryKey
Dim currentVerion As String


rk = Registry.LocalMachine

sk = rk.OpenSubKey("SOFTWARE\\JavaSoft\\Java Runtime Environment")
If sk Is Nothing Then
    'Does not exist (IE Could not open it).
Else
    currentVerion = sk.GetValue("CurrentVersion").ToString()
End If

Answer 4

直接来自MSDN。

Try
    Dim dirPath As String = "your directory where JDK might be present" 
    Dim dirs As List(Of String) = New List(Of String)(Directory.EnumerateDirectories(dirPath))
    For Each folder In dirs
        ' Logic to check existence of word "JDK" from end
        ' If found break
    Next
Catch UAEx As UnauthorizedAccessException
    ' Error Handling
Catch PathEx As PathTooLongException
    ' Error Handling
End Try

我可以检查一个目录是否只存在其名称的一部分吗？

4 个答案: