double avg =   (double)ArrayOps.sumElements( ar1 ) / ar1.length ;   

End of the Chapter

You have reached the end of the chapter. Click on one of the following if you wish to review some method.

• array, as parameter Using an array parameter
• array, as parameter (picture) Picture of array objects and parameters.
• parameter, primitive Primitive type Parameters (in the printRange() method.)
• parameter, names Parameter names.
• error checking Error checking code in methods.
• return statement Returning a value (in the sum() method.)

The next chapter discusses how methods can change the values in an array.