Recogize operators, and fractions... Test output...
do not actually do anything with the words yet but making progress.

So Test output...

$ java -ea FractionCalculatorTest
FractionTestCalculator tests verbose output:
debug call to process with inputString =" 1/2   +   1 "
debug word= "1/2"
debug word= "+"
debug word= "1"
ERROR get FAIL for test "Simple parsing and operation: input of " 1/2   +   1 " should give "3/2". Actually "" is output.".
FractionCalculatorTest: 1 tests FAIL.
Exception in thread "main" java.lang.AssertionError: FractionCalculatorTest failed 1 tests
	at FractionCalculatorTest.simpleTests(FractionCalculatorTest.java:42)
	at FractionCalculatorTest.main(FractionCalculatorTest.java:16)