java能对注册表进行操作吗?__public_String_Win_int_private_

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java能对注册表进行操作吗?

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本文导语: 该如何实现？ | 通过JNI实现，有5个文件： 1、Win32RegKey.java /** * @version 1.00 1997-07-01 * @author Cay Horstmann */ import java.util.*; public class Win32RegKey { public Win32RegKey(int theRoot, String thePath...

该如何实现？

通过JNI实现，有5个文件：
1、Win32RegKey.java
/**
* @version 1.00 1997-07-01
* @author Cay Horstmann
*/

import java.util.*;

public class Win32RegKey
{  public Win32RegKey(int theRoot, String thePath)
   {  root = theRoot;
      path = thePath;
   }
   public Enumeration names()
   {  return new Win32RegKeyNameEnumeration(root, path);
   }
   public native Object getValue(String name);
   public native void setValue(String name, Object value);

   public static final int HKEY_CLASSES_ROOT = 0x80000000;
   public static final int HKEY_CURRENT_USER = 0x80000001;
   public static final int HKEY_LOCAL_MACHINE = 0x80000002;
   public static final int HKEY_USERS = 0x80000003;
   public static final int HKEY_CURRENT_CONFIG = 0x80000005;
   public static final int HKEY_DYN_DATA = 0x80000006;

   private int root;
   private String path;

   static
   {  System.loadLibrary("Win32RegKey");
   }
}

class Win32RegKeyNameEnumeration implements Enumeration
{  Win32RegKeyNameEnumeration(int theRoot, String thePath)
   {  root = theRoot;
      path = thePath;
   }

   public native Object nextElement();
   public native boolean hasMoreElements();

   private int root;
   private String path;
   private int index = -1;
   private int hkey = 0;
   private int maxsize;
   private int count;
}

class Win32RegKeyException extends RuntimeException
{  public Win32RegKeyException() {}
   public Win32RegKeyException(String why)
   {  super(why);
   }
}
2、Win32RegKeyTest.java
/**
* @version 1.00 1997-07-01
* @author Cay Horstmann
*/

import java.util.*;

public class Win32RegKeyTest
{  public static void main(String[] args)
   {  Win32RegKey key = new Win32RegKey(
         Win32RegKey.HKEY_CURRENT_USER,
         "Software\Microsoft\MS Setup (ACME)\User Info");

      key.setValue("Default user", "Bozo the clown");
      key.setValue("Lucky number", new Integer(13));
      key.setValue("Small primes", new byte[]
         { 2, 3, 5, 7, 11 });

      Enumeration enum = key.names();

      while (enum.hasMoreElements())
      {  String name = (String)enum.nextElement();
         System.out.print(name + " = ");

         Object value = key.getValue(name);

         if (value instanceof byte[])
         {  byte[] bvalue = (byte[])value;
            for (int i = 0; i