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Discuss the concept of parameters. What are parameters for? What is the difference between formal parameters and actual parameters? Give an example in Java code that illustrates formal parameters and actual parameters.


Give an example of a while loop, then provide the equivalent do-while loop and for loop. Then give a different example of a do-while loop along with the equivalent while loop and for loop. Finally give an example of a for loop along with the equivalent while loop and do-while loop. Use your examples to illustrate the advantages and disadvantages of each looping structure and describe those disadvantages and advantages.
Use an example to briefly explain the features of a structured program.
Write the pseudocode for a program that will continue prompting a user for a value whilst the total of all values remain less than 100. The program must keep track of the number of times the loop executes and display the number of times the loop executed once the loop had finished executi
Write the pseudocode for an application that will:
a. Prompt a user for three numbers.
b. Store the values entered by a user in an array as they are provided by
the user.
c. Ask a user if they would like to search for a value:
i. If the user wishes to search for a value, the user needs to be
prompted for a value to search for. If the value is found, a
notification needs to be provided to the user.
d. Use a for loop to cycle through the arrays in order to calculate and
display the total of the values stored in the array.

The application should use a text file to capture the whole vehicle accidents data structure. To do this, add two methods to your center class:

1.    A method to save the content of the created Java structure into a text file.

2.    A method to restore the saved content back into an appropriate Java data structure for next run time.

Java provides a facility to create your own Exceptions which are basically derived classes of Exception. Write a class that defines a duplicate exception. The duplicate exception will be thrown if accidents are duplicated in the accidents list.


Design and implement a separate testing class to test the designed classes and check if classes meet the requirements.




By means of examples, explain what programming environments and users environments refer to.
Produce the equivalent 'for loop for the while loop. Make use of pseudo code to formulate
how do you write the pseudocode for an application that will:
a. Prompt a user for three numbers.
b. Store the values entered by a user in an array as they are provided by
the user.
c. Ask a user if they would like to search for a value:
i. If the user wishes to search for a value, the user needs to be
prompted for a value to search for. If the value is found, a
notification needs to be provided to the user.
d. Use a for loop to cycle through the arrays in order to calculate and
display the total of the values stored in the array

and how would you write pseudocode for a program that will continue prompting a user for a
value whilst the total of all values remain less than 100. The program must
keep track of the number of times the loop executes and display the number of
times the loop executed once the loop had finished executing.
how to draw item at home create a Java console program that uses println() statements to draw that item.
One way to determine how healthy a person is by measuring the body fat of
the person. The formulas to determine the body fat for female and male are
as follows:
Body fat formula for women:
A1 ¼ (Body weight  0.732) + 8.987
A2 ¼ Wrist measurement (at fullest point) / 3.140
A3 ¼ Waist measurement (at navel)  0.157
A4 ¼ Hip measurement (at fullest point)  0.249
A5 ¼ Forearm measurement (at fullest point)  0.434
B ¼ A1 + A2 – A3 – A4 + A5
246 | Chapter 4: Control Structures I: Selection
Body fat ¼ body weight – B
Body fat percentage ¼ body fat  100 / body weight
Body fat formula for men:
A1 ¼ (Body weight  1.082) + 94.42
A2 ¼ Waist measurement  4.15
B ¼ A1 – A2
Body fat ¼ body weight – B
Body fat percentage ¼ body fat  100 / body weight
Write a program to calculate the body fat of a person.
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