Java - Duplicate Elimination

Use a one-dimensional array to solve the following problem: Write an application that inputs five numbers, each of which is between 10 and 100, inclusive. As each number is read, display it only if it is not a duplicate of a number already read. Provide for the "worst case," in which all five numbers are different. Use the smallest possible array to solve this problem. Display the complete set of unique values input after the user inputs each new value.

Write an Java application to calculate the product of a series of integers.

Write a Java application that calculates the product of a series of integers that are passed to method "product" using a variable-length argument list. Test your method with several calls, each with a different number of arguments.

Returning Error Indicators from Methods - Java

Modify the set methods in class Time2 of Fig. 8.5 to return appropriate error values if an attempt is made to set one of the instance variables hour, minute or second of an object of class Time to an invalid value. [Hint: Use boolean return types on each method.] Write a program that tests these new set methods and outputs error messages when incorrect values are supplied.

Huge Integer Class - Java

Create a class HugeInteger which uses a 40-element array of digits to store integers as large as 40 digits each. Provide methods input, output, add and subtract. For comparing HugeInteger objects, provide the following methods: isEqualTo, isNotEqualTo, isGreaterThan, isLessThan, isGreaterThanOrEqualTo and isLessThanOrEqualTo. Each of these is a predicate method that returns true if the relationship holds between the two HugeInteger objects and returns false if the relationship does not hold. Provide a predicate method isZero. If you feel ambitious, also provide methods multiply, divide, and remainder. [Note: Primitive boolean values can be output as the word "true" or the word "false" with f... click for more

Java - Quadrilateral, etc.

Write an inheritance hierarchy for classes Quadrilateral, Trapezoid, Parallelogram, Rectangle and Square. Use Quadrilateral as the superclass of the hierarchy. Make the hierarchy as deep (i.e., as many levels) as possible. Specify the instance variables and methods for each class. The private instance variables of Quadrilateral should be the x-y coordinate pairs for the four endpoints of the Quadrilateral. Write a program that instantiates objects of your classes and outputs each object's area (except Quadrilateral).