Registrierungszugriffe mit Java 

public final class Main
{

  public static void print( final java.io.InputStream inputStream )
  throws java.io.IOException
  { /*var*/ java.lang.String line = null;
    final java.io.InputStreamReader inputStreamReader
    = new java.io.InputStreamReader( inputStream );
    final java.io.BufferedReader bufferedReader
    = new java.io.BufferedReader( inputStreamReader );
    while(( line = bufferedReader.readLine() )!= null )
    java.lang.System.out.println( line ); }

  public static void exec( final java.lang.String w )
  throws
  java.io.IOException            /* exec    */,
  java.lang.InterruptedException /* waitFor */
  { java.lang.System.out.println( w );
    final java.lang.Process processw = java.lang.Runtime.getRuntime().exec( w );
    { java.lang.System.err.println( "[waitFor" );
      processw.waitFor();
      java.lang.System.err.println( "waitFor]" ); }
    print( processw.getInputStream() );
    print( processw.getErrorStream() ); }

  public static void main( final java.lang.String[] args )
  throws
  java.io.IOException /* exec */,
  java.lang.InterruptedException /* waitFor */
  { final java.lang.String s = "HKCU\\Software\\JavaSoft\\Prefs\\Example20150414212011"
    +( int )( java.lang.Math.random() * 1e9 );
    java.lang.System.out.println( s );
    exec( "REG ADD " + s +  " /v Data /t REG_BINARY /d fe340ead /f" );
    exec( "REG QUERY " + s +  " /v Data /t REG_BINARY /z" ); }}