I need to create a pseudocode for the code below.

package oneProgramHW4;

import javax.swing.JOptionPane;

public class oneProgramHW4 {

//1.Write and test the following method that calculates and returns the area of a rectangle.

public static float rectangleArea(double length, double width) {

double area = 0;

area = (length * width);

float result = (float) area;

return (float) result;

}

//2.Write and test the following method that determines whether a given number is even.

//If it is even, return true, if it is odd, return false.

public static boolean isEven(int num) {

if(num % 2 == 0) {

return true;

}

else {

return false;

}

}

//3.Write and test the following method that accepts two integer parameters, i and j,

//and then returns the sum of the numbers from i to j.

public static int sum(int i, int j) {

return Integer.sum(i, j);

}

//4.Write and test the following method that determines accepts an integer value n

//returns the sum of the first n natural numbers.

public static int sumN(int n) {

int sum=0;

for(int x=1;x<=n;x++)//calculating sum of first n natural numbers

sum+=x;

return sum;

}

//5. Write and test the following method that accepts an integer value n

//displays n lines of 5 stars each.

public static void printNLines(int a) {//took semicolon out

String s = "";

//Generating given number of lines

for(int i = 1; i <= a; i++) {

//For getting five stars

for(int j=0; j<5; j++) {

//Adding *

s += "*";

}

//Adding new lines

s += " ";

}

//Displaying string

JOptionPane.showMessageDialog(null, s);

}

public static void main(String[] args) {

//test my method

//prompt user to chose from menu

//main loop

int mainMenu = 0;

String menuDisplay = ("Please chose from the following options: 1. Caculate rectangle area 2. Find if number is even 3. Return the sum of numbers 4. Returns the sum of the first n natural numbers 5. Displays lines of 5 stars each. 6. Exit ");

mainMenu = Integer.parseInt(JOptionPane.showInputDialog(null, menuDisplay));

//change selection to if else if

if(mainMenu ==1) {

double length = 0;

double width = 0;

//Prompt for length and width

length = Integer.parseInt(JOptionPane.showInputDialog(null, "Please enter length"));

width = Integer.parseInt(JOptionPane.showInputDialog(null, "Please enter width"));

// calculate rectangle area

JOptionPane.showMessageDialog(null, "The rectangle area is "+ rectangleArea(length,width));

mainMenu = Integer.parseInt(JOptionPane.showInputDialog(null, menuDisplay));

}

//Write and test the following method that determines whether a given number is even.

//If it is even, return true, if it is odd, return false.

else if(mainMenu ==2) {

//even number

int num = 0;// variable

//prompt for number

num = Integer.parseInt(JOptionPane.showInputDialog(null, "Please enter your number"));

JOptionPane.showMessageDialog(null, isEven(num));

mainMenu = Integer.parseInt(JOptionPane.showInputDialog(null, menuDisplay));

}//3.Write and test the following method that accepts two integer parameters, i and j,

//and then returns the sum of the numbers from i to j.

else if(mainMenu ==3) {// accepts and returns the sum of the numbers from i to j.

int i = 1;

int j = 1;

i = Integer.parseInt(JOptionPane.showInputDialog(null,"Please enter number one" + i));

j = Integer.parseInt(JOptionPane.showInputDialog(null, "Please enter number two" + j));

// calculate the sum of numbers

JOptionPane.showMessageDialog(null, " The sum is " + sum(i, j));

mainMenu = Integer.parseInt(JOptionPane.showInputDialog(null, menuDisplay));

}

//4.Write and test the following method that determines accepts an integer value n

//returns the sum of the first n natural numbers.

else if(mainMenu == 4) {

int n = 0;

//sum of the first n natural numbers

//sum of first 5 numbers is 55

n = Integer.parseInt(JOptionPane.showInputDialog(null, "Please enter first n number to calculate"));

JOptionPane.showMessageDialog(null, "The sum of the first " + n + " numbers is " + sumN(n));

mainMenu = Integer.parseInt(JOptionPane.showInputDialog(null, menuDisplay));

}

//5. Write and test the following method that accepts an integer value n

//displays n lines of 5 stars each.

else if(mainMenu == 5){

int a = Integer.parseInt(JOptionPane.showInputDialog(null, "Please enter number of lines to print "));

printNLines(a);

mainMenu = Integer.parseInt(JOptionPane.showInputDialog(null, menuDisplay));

}

else if (mainMenu == 6) {

System.exit(1);

}

}

}