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CMIS: Java Homework 4

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Homework 4

This assignment demonstrates your understanding of the String, StringBuffer, StringBuilder classes, along with classes in the java.time package and the use of command line arguments. This homework consists of 2 programming assignments worth 25 points each.

Before attempting this project, be sure you have completed all of the reading assignments, hands-on labs, discussions, and assignments to date.

1. Write a Java program the displays the State bird and flower. The program should prompt the user to enter a State and print both the State bird and flower. The user should be able to enter a State without worrying about case. (e.g. Users could enter Maryland, maryland, MARYLAND or any other possible combination of lower and upper case characters. States may also contain leading and trailing white spaces. Hint: Store the State information in a multi- dimensional array. The program should continue to prompt the user to enter a state until “None” is entered. You will need to do some research to find the State birds and flowers. Here is a sample run:

      Enter a State or None to exit:
      Bird: Baltimore Oriole
      Flower: Black-eyed Susan
      Enter a State or None to exit:
      Bird: Blue Hen Chicken
      Flower: Peach Blossom
      Enter a State or None to exit:

2.  Design a class named Clock. The class contains private data fields for startTime and stopTime, a no argument constructor that initializes the startTime to the current time, a method named start() that resets the startTime to the given time, a stop() method that sets the endTime to the given time and a getElapsedTime() method that returns the elapsed time in seconds. Create a TestClock class to construct a Clock instance and return the elapsed time. Command line arguments should be used to send the start and end times. You should use the java.time classes. Here is sample run:

            java TestClock 11:45:12 11:48:13
            Elapsed time in seconds is: 181

Submission requirements:

Functionality of the code.

Meaningful variable names and prompts applied.

Class names are written in UpperCamelCase.

Variable names are written in lowerCamelCase.

Constant names are in written in All Capitals.


Braces use K&R style. Your deliverables include all Java files (.java) and a single word (or PDF) document. The Java files should be named appropriately for your applications. Your word document should include screen shots showing the successful compiling and running of each application, and a detailed description of the test plan for each application. The test plan should include the input, expected output, actual output and if the test case passed or failed. 

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