Building android game error Win32Exception

Here is the red error:

Error building Player: Win32Exception: ApplicationName='java.exe', CommandLine='-Xmx1024M -Dcom.android.sdkmanager.toolsdir="C:/Program Files (x86)/Android/android-sdk	ools" -Dfile.encoding=UTF8 -jar "C:/Program Files (x86)/Unity/Editor/Data/BuildTargetTools/AndroidPlayer\sdktools.jar" - ', CurrentDirectory='C:\Users\Dell\Desktop\TheGame'

It has to do with android sdk or java version and I have forgot the instruction on how to install all these anybody help

go to http://forum.unity3d.com/threads/80552-Error-building-Player-Win32Exception-ApplicationName-java.exe?p=517034

maybe your android sdk is new or
you don’t install the java jdk or
the JAVA_HOME variable is not set : )