Windows: environment variables Java

Usually we define the environment variables for Java in this way:

JAVA_HOME-> C:\Program Files\Java\jdkx.x.x_xx

Path-> C:\Program Files\Java\jdkx.x.x_xx\bin

but the best way to define the environment variables for java is the following:

JAVA_HOME-> C:\Program Files\Java\jdkx.x.x_xx

Path-> %JAVA_HOME%\bin