How to add new key with value in registry via java?

Question

I'm running tests on IE11. To do it I made some changes in registry. I have created new key 'FEATURE_BFCACHE' in folder 'FeatureControl'. Then I have added new 'DWord' value to 'FEATURE_BFCACHE' named 'iexplore.exe' with value '0'. I have done it manually. But now try to do it from my program. I wrote this but it does not work.

String[] c = new String[]{"reg", "add", "\"HKLM\\Software\\Wow6432Node\\Microsoft\\Internet Explorer\\Main\\FeatureControl\\FEATURE_BFCACHE\"",
                "/v", "\"iexplore.exe\"", "/t", "REG_DWORD", d", "0", "/f"};
try {
    new ProcessBuilder(c).start();
} catch (IOException e) {
    e.printStackTrace();
}

After some changes I have line that properly works in command line reg add "HKLM\\SOFTWARE\\WOW6432Node\\Microsoft\\Internet Explorer\\Main\\FeatureControl\\FEATURE_BFCACHE1" /t REG_DWORD /v iexplore.exe /d 0 /f but does not work from java code

System.out.println("Creating new folder");
String[] c = new String[]{"reg", "add", "\"HKLM\\SOFTWARE\\WOW6432Node\\Microsoft\\Internet Explorer\\Main\\FeatureControl\\FEATURE_BFCACHE1\"",
   "/t", "REG_DWORD", "/v", "iexplore.exe", "/d", "0", "/f"};
try {
    new ProcessBuilder(c).start();
} catch (IOException e) {
    e.printStackTrace();
}

Maybe to execute this command I need run as administrator?

Answer 1

Quoting strings is only needed when you run a command in a cmd promt or pass it as a single String, when you use a String array with a ProcessBuilder the quote characters will be passed to the called program as literal quote characters.

Try:

String[] c = new String[]{"reg", "add", "HKLM\\Software\\Wow6432Node\\Microsoft\\Internet Explorer\\Main\\FeatureControl\\FEATURE_BFCACHE",
            "/v", "iexplore.exe", "/t", "REG_DWORD", "/d", "0", "/f"};

Answer 2

修改注册表，我们需要以管理员身份执行命令行，因此，如果我以管理员身份打开IntelliJ Idea，它将起作用