Java Program Discussion Assignment

Java Program Discussion Assignment
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Learning Objective: Practice with the use of generic methods. Practice creating custom exceptions. Ability to overload a generic method. Practice with arrays.
Using the example code for the generic PrintArray provided below, modify the code to overload the generic method of PrintArray twice for each of the following:
· take two additional integer arguments, low and high, entered by the user. When you call the method with these arguments, it prints out only the portion of the array that is between the two subscripts. Your program needs to validate that the low and high are within the range of the array bounds. If either is out of range, then the overloaded PrintArray method should throw a custom exception for InvalidSubscriptException. The exception should be caught by the main program and an error message to the user should notify them of the issue and allow them to enter a correct value. If no exception is thrown, then printArray should return the number of elements printed.
· Create the custom exception InvalidSubscriptException with the following method header; “public class InvalidSubscriptException extends RuntimeException” and should include a String message parameter as part of an overloaded constructor for the custom exception object.
· Overload the generic PrintArray with a non-generic version of the method that specifically prints an array of Strings (you can make up your own names to use in the array) in neat, tabular format as shown below:
The following names are in the array;
Tom Abdul Han Mark
Sara Hamilton Anna Tatiana
You will need to modify the main program to exercise all versions of the overloaded method. For the addition of two integer arguments, you need to exercise both versions of printArray on all three array types (integer, double, and character). For the non-generic version, you need to show the ability to exercise the method and print out the nicely formatted string array content.
Make sure to submit your java code file(s) and your execution screenshots. Don’t forget to include a program header with your name, section, assignment title, and a description of the program. The execution screenshots are required for credit. Make sure to submit your own original code. SafeAssign has been enabled to verify originality of code.
// Using generic methods to print array of different types.
public class GenericMethodTest
// generic method printArray
public static void printArray( E[] inputArray )
// display array elements
for ( E element : inputArray )
System.out.printf( “%s “, element );
} // end method printArray
public static void main( String args[] )
// create arrays of Integer, Double and Character
Integer[] integerArray = { 1, 2, 3, 4, 5, 6 , 7, 8, 9, 10};
Double[] doubleArray = { 1.1, 2.2, 3.3, 4.4, 5.5, 6.6, 7.7 , 8.8, 9.9, 10.1};
Character[] characterArray = { ‘I’, ‘S’, ‘2’, ‘4’, ‘7’ ,’ ‘ , ‘i’, ‘s’, ‘ ‘ , ‘f’, ‘u’, ‘n’};
System.out.println( “Array integers:” );
printArray( integerArray ); // pass an Integer array
System.out.println( “\nArray doubles:” );
printArray( doubleArray ); // pass a Double array
System.out.println( “\nArray characters:” );
printArray( characterArray ); // pass a Character array
} // end main
} // end class GenericMethodTest

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