Android.bat file is missing in sdk\tools folder also i do not having AVD & SDK manager in tools so i can replace them

Probably all the contents of the sdk/tools folder are missing as well?

Best method to solve this issue is to go to the sdk/temp folder.There you will find a zip file with a name like "tools_r24.0.1-windows" (version number will be different)

Copy it to someplace and extract it. Inside the extracted folder you'll have a folder named 'tools'

Copy that folder to sdk/ and replace the current tools folder in sdk/

And voila! SDK and AVD will work again and all your virtual devices will be restored!

The Best Solution i have is download the SDK Tools Only From: http://developer.android.com/sdk/index.html

->Other Download Options->SDK Tools Only->android-sdk_r24.*.*-windows.zip
Update: Web content updated now you need to go to the section below

"Get just the command line tools" (Download tools according to your operating system)

.
and extract it into your sdk location where the tools required.

I actually don't understand, why you don't download it from somewhere else, but here is the Android.bat:

@echo offrem Copyright (C) 2007 The Android Open Source Projectremrem Licensed under the Apache License, Version 2.0 (the "License");rem you may not use this file except in compliance with the License.rem You may obtain a copy of the License atremrem      http://www.apache.org/licenses/LICENSE-2.0remrem Unless required by applicable law or agreed to in writing, softwarerem distributed under the License is distributed on an "AS IS" BASIS,rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.rem See the License for the specific language governing permissions andrem limitations under the License.rem Useful links:rem Command-line reference:rem   http://technet.microsoft.com/en-us/library/bb490890.aspxrem don't modify the caller's environmentsetlocalrem Set up prog to be the path of this script, including following symlinks,rem and set up progdir to be the fully-qualified pathname of its directory.set prog=%~f0rem Grab current directory before we change itset work_dir=%cd%rem Change current directory and drive to where the script is, to avoidrem issues with directories containing whitespaces.cd /d %~dp0rem Check we have a valid Java.exe in the path.set java_exe=call lib\find_java.batif not defined java_exe goto :EOFset jar_path=lib\sdkmanager.jar;lib\swtmenubar.jarrem Set SWT.Jar path based on current architecture (x86 or x86_64)for /f "delims=" %%a in ('"%java_exe%" -jar lib\archquery.jar') do set swt_path=lib\%%a:MkTempCopy    rem Copy android.bat and its required libs to a temp dir.    rem This avoids locking the tool dir in case the user is trying to update it.    set tmp_dir=%TEMP%\temp-android-tool    xcopy %swt_path% %tmp_dir%\%swt_path% /I /E /C /G /R /Y /Q > nul    copy /B /D /Y lib\common.jar         %tmp_dir%\lib\        > nul    copy /B /D /Y lib\commons-codec*     %tmp_dir%\lib\        > nul    copy /B /D /Y lib\commons-compress*  %tmp_dir%\lib\        > nul    copy /B /D /Y lib\commons-logging*   %tmp_dir%\lib\        > nul    copy /B /D /Y lib\dvlib.jar          %tmp_dir%\lib\        > nul    copy /B /D /Y lib\guava*             %tmp_dir%\lib\        > nul    copy /B /D /Y lib\httpclient*        %tmp_dir%\lib\        > nul    copy /B /D /Y lib\httpcore*          %tmp_dir%\lib\        > nul    copy /B /D /Y lib\httpmime*          %tmp_dir%\lib\        > nul    copy /B /D /Y lib\layoutlib-api.jar  %tmp_dir%\lib\        > nul    copy /B /D /Y lib\org-eclipse-*      %tmp_dir%\lib\        > nul    copy /B /D /Y lib\sdk*               %tmp_dir%\lib\        > nul    copy /B /D /Y lib\swtmenubar.jar     %tmp_dir%\lib\        > nul    rem jar_path and swt_path are relative to PWD so we don't need to adjust them, just change dirs.    set tools_dir=%cd%    cd /d %tmp_dir%:EndTempCopyrem The global ANDROID_SWT always override the SWT.Jar pathif defined ANDROID_SWT set swt_path=%ANDROID_SWT%if exist "%swt_path%" goto SetPath    echo ERROR: SWT folder '%swt_path%' does not exist.    echo Please set ANDROID_SWT to point to the folder containing swt.jar for your platform.    goto :EOF:SetPathrem Finally exec the java program and end here.REM set REMOTE_DEBUG=-Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=y,address=8000call "%java_exe% %REMOTE_DEBUG%" "-Dcom.android.sdkmanager.toolsdir=%tools_dir%" "-Dcom.android.sdkmanager.workdir=%work_dir%" -classpath "%jar_path%;%swt_path%\swt.jar" com.android.sdkmanager.Main %*rem EOF