Write a method called friendlyNumbers that accepts two 4-digit integer parameters n1 and n2. The method will display whether n1 and n2 are friendly number or not. The header of the method is: public static void friendlyNumbers (int n1, int n2) Note that two integers are friendly if the first digit and the last digit of both numbers are the same. For example 3451 and 3981 are friendly numbers because both numbers starts with 3 and ends with 1, but 3450 and 4650 are not.
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- Write a method that prints numbers using the following header:public static void printNumbers(int num1, int num2, intnumberPerLine)This method prints the characters between num1 and num2 with the specifiednumbers per line. Write a test program that prints ten characters per line from 1to 100. Numbers are separated by exactly one space.1. Write the following method that returns the intersecting point between two lines (p1, p2) and (p3, p4): public static Point2D getIntersecting Point ( Point 2D pl, Point2D p2, Point 2D p3, Point2D p4); The method returns null if the two lines are parallel. Write a test program that prompts the user to enter three points and displays the center point. Here is a sample run. (Hint: for finding the intersecting point between two lines, see Programming Exercise 8.31.) Enter x1, yl, x2, y2, x3, y3, x4, y4: 2 2 5 -1.0 4.0 2.0 -1.0 -2.0 The intersecting point is at (2.88889, 1.1111) Enter x1, yl, x2, y2, x3, y3, x4, y4: 2 2 7 6.0 4.0 2.0 -1.0 -2.0 The two lines are parallel1. Write the following method that returns the intersecting point between two lines (p1, p2) and (p3, p4): public static Point 2D getIntersecting Point ( Point 2D pl, Point 2D p2, Point 2D p3, Point2D p4); The method returns null if the two lines are parallel. Write a test program that prompts the user to enter three points and displays the center point. Here is a sample run. (Hint: for finding the intersecting point between two lines, see Programming Exercise 8.31.) Enter x1, yl, x2, y2, x3, y3, x4, y4: 225 -1.0 4.0 2.0 -1.0 -2.0 The intersecting point is at (2.88889, 1.1111) The two lines are parallela- Write a method called even ToZero that takes as parameter an integer 'limit'. The method prints on the screen all the even numbers from 'limit' down to 0 (inclusive). Use the following method header: public static vold even ToZero(int limit) b- Usc the above method to write a test program which rcads from the uscr a positive integer and prints all the even numbers from this integer down to 0 via invoking the method even ToZero. Note: Assume that the user will enter a positive integer. (Do ror check if the inpul is positive of not). Sample Run 1: Enter a positive inLeger: 5 The even numbers from 5 down to-0 ace 4 2 0 Sample Run 2: Enter a positive integer: 9 The ever numbers from 9 down to 0 ace &6 nal ExamJava: The class will contain the following static methods: reverseS – A method that displays a string reversely on the console using the following signature: public static void reverseS(String s) printSub1 – print all substrings of a string (duplicated substrings are allowed, but loops are not allowed). The method signature: public static void printSub1(String s) printSub2 – print all substrings of a string (duplicated substrings are not allowed, but loops are allowed). The method signature: public static void printSub2(String s) Note: All methods should be RECURSIVE. Any predefined classes that are based on Set are not allowed. Allow the user to input the string! In the main method, read a string from the user and output the reversed string and substrings to the screen: Sample Run: Please input a string: abcd The reversed string: dcba The substrings of the input string: abcd abc ab a b bc b c bcd bc b c cd c d The substrings of the input string: a ab abc…JAVA Write a class that calculates add, subtraction, and multiplication. The class should include the following methods: Constructor : initialize all values to 0 getAsk() : Ask users to input two integer numbers. This method calls Distribute() method. Distribute() : Ask users to choose which calculation he/she wants. This method calls a method that can add, subtract, or multiply based on the user's option. CalAdd() : add two numbers CalSub() : subtract two numbers CalProduct() : multiply two numbers toString() : toString method that display result of operation. The program should be designed to test the class developed. Your program might look like the following: public class CalculateNumTesting{ public static void main(String[] args){ CalculateNum calculation = new CalculateNum(); calculation.getAsk(); System.out.println(calculation); } }1. Write a program that takes three numbers (a,b,c) from the user as input and finds the median of the three. The program has a method called median that takes 3 numbers as the parameter and returns the median. Use if-then-else statements to find the median. You can assume the three numbers are not the same. Sample Example: Enter 3 numbers 10 13 The median is 10 public class Median{ public static void main(String[] args){ Scanner input = new int a = int b = int c =Question 2 Write a method int countMultiplesofFive (int x, int y) that returns the number of multiples of 5 bounded between x and y inclusive. In the main, ask the user to enter two positive numbers (both must be positive, if users enter a negative value, they keep reentering values until both numbers are positive). Use the method countMultiplesofFive to find and print how many multiples of 5 exists between the two entered numbers inclusive. Sample run 1: First random: 11 Second random: 80 There are 14 umber that are multiple of five between 11 and 80 Sample run 2: First random: 75 Second random: 33 There are 9 number that are multiple of five between 33 and 75basic java please Write a void method named emptyBox()that accepts two parameters: the first parameter should be the height of a box to be drawn, and the second parameter will be the width. The method should then draw an empty box of the correct size. For example, the call emptyBox(8, 5) should produce the following output: ***** * * * * * * * * * * * * ***** The width of the box is 5. The middle lines have 3 spaces in the middle. The height of the box is 8. The middle columns have 6 spacesThe area of a pentagon can be computed usingthe following formula: Write a method that returns the area of a pentagon using the following header:public static double area(double side)Write a main method that prompts the user to enter the side of a pentagon anddisplays its area. Here is a sample run:Enter the side: 5.5 ↵EnterThe area of the pentagon is 52.04444136781625C# Part 1: In your program, write a method that accepts a positive integer and returns true if the number is a prime number and false otherwise. Note that 2 is the only even prime number. An odd integer is prime if it not divisible by any odd integer less than or equal to the square root of the number. Part2: A prime number whose reversal is also a prime number is called emirp. For example, 11, 13, 79 and 359 are emirps. Write a program that outputs to a ListBox the first 100 emirps. Your program must contain the method from Part 1 that returns true if a number is prime; false otherwise and another method that returns the reversal of a positive number. You can reverse the integer in the following way: • Convert the integer into a string value = num.ToString(); • Use the following code to reverse the integer string newNum = “”; for (int l = value.Length; l > 0; l--) newNum = newNum + value[l-1]; Also, your program should have a TextBox that will accept a positive integer from the…Write a method that returns the lcm (least common multiple) of an unspecified number of integers. The method header is specified as follows: public static int lcm(int... numbers) Write a test program that prompts the user to enter five numbers, invokes the method to find the lcm of these numbers, and displays the lcm.SEE MORE QUESTIONS