JDK绿色安装 for windows

系统出问题了，实在解决不了，只好重装系统了！但是重装系统后，我电脑的中的JDK又得重装，很麻烦！所以找了一些解决办法，下面是做的记录:把下面代码保存为.vbs为扩展名，放在jdk目录下运行

        

curdir = createobject("Scripting.FileSystemObject").GetFolder(".").Path
regpath="HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\Environment\"
set  ws=wscript.createobject("wscript.shell")
temp=ws.regwrite(regpath & "JAVA_HOME",curdir)
temp=ws.regwrite(regpath & "CLASSPATH",".;%JAVA_HOME%\lib;%JAVA_HOME%\lib\tools.jar")
oldpath=ws.regread(regpath & "PATH")
newpath=oldpath & ";%JAVA_HOME%\bin;%JAVA_HOME%\jre\bin"
 ws.Environment("system").Item("PATH")=newpath
temp=ws.regread(regpath & "PATH")
wscript.echo "set ok"