Write a Java program with two methods, main and exchange that asks to input two double variables, then prints them, and calls the exchange method to exchanges the values of these two variables. The exchange method receives two values for its parameters, prints them, then exchange values of parameters and prints their new values.

Write a static method in Java that takes an integer as an input parameter and returns the count of digit 1 in the input integer. The input parameter will always be greater than 0.

Computer Science Write a Java program that reads a line and a line segment and then determines whether they intersect or not. When they overlap completely, consider that as intersecting. Use variables ((lp1x, lp1y), (lp2x, lp2y)) to represent a line and ((sp1x, sp1y), (sp2x, sp2y)) to represent a line segment

Instead of receiving references, Java's method parameters get values as their input. In what specific ways does this manifest itself?

Write the following programs in Java: In the Converter class write the static method, bin2decimal(String bin). The parameter for this method is an unsigned (nonnegative) binary number represented by a string. The method returns the decimal equivalent for the binary parameter, as an integer.If the binary string is invalid (contains characters other than ‘0’ and ‘1’), the method returns -1. Convert from a binary (b) string with up to 16 digits to decimal (d) using the following formula:? = ?0 + ?1 ×ばつ 2 + ?2 ×ばつ 22 +⋯+ ?7 ×ばつ 215where b0, b1, ?2, ... ?7 are the binary digits in order of increasing significance. For example, 1101 is: 1 +たす 0×ばつかける2 +たす 1×ばつかける22 +たす 1×ばつかける23 =わ 13 in decimal. Side note: You may NOT use the decode method of the Long wrapper class instead of this formula. In the Converter class write another static method, english2encrypted(String english). The parameter for this method is a word or sentence represented by a string. The word or sentence should only contain letters (no digits,...

Is the static block always run execute first in java. Explain it with java code. Considering a class with one variable and static block.explain both conditions when static execute first and other is when the static block does not execute

Write a Java procedural program that helps organise travellers with a specific travel company arriving at an airport, telling them which queue to join based on their hotel. The program asks each traveller what their hotel is (the choices are the Seaview for which they need to join Queue 1, the Majestic for which they need to join Queue 4 and the Grand for which they need to join Queue 7) and tells them the right queue. There are 1330 travellers with the tour company and each will use the program as they arrive. After all have indicated their hotel, the program then prints the percentage in each hotel. * See image for an example run of the program. Percentages should be printed truncated to two decimal places. Do this using a method you write yourself that multiplies by 100, converts to an integer then divides by 100. * must make use of a counter-controlled for loop, be in procedural programming style (not OOP)

Java

Write a program using java programing language. Write a Java class (called ShowNum) that displays the same number of asterisks (row and columns) as is input in 2 numbers. Your class should have a default constructor (number1 is 0, number2 is 0) and another constructor that inputs 2 numbers (integers). You'll need accessor methods for the numbers and a display method that displays as follows: Input: 2, 7 ******* ******* Demo the class in a client (called ShowNumClient) that allows the user to run the program as many times as they want (enter number and use display method). The user will signal with a sentinel (-1), when they want to terminate the client. Make sure that each number entered in the client is between 1 and 30.

Write a JAVA procedural program (procedural programming) that works out the amount a person has to pay for parking in a carpark in a tourist town. If they say they are disabled, they are told it is free. Otherwise they enter the numberof hours as a whole number (1-8) that they wish to park as well as whether they have an "I live locally"badge or are an old age pensioner both of which leads to a discount. The program tells them the cost to park.The calculation is done in this program as follows. If they are disabled it is free. Otherwise ... Take numberof hours they wish to park and give a basic charge:• 1 hour: 3.00 pounds• 2-4 hours: 4.00 pounds• 5-6 hours: 4.50 pounds• 7-8 hours: 5.50 poundsNext modify the resulting charge based on whether they are local or not:• If local: subtract 1 pound• If OAP: subtract 2 poundsYour program MUST include methods including ones that- asks for the hours and returns the basic charge.- asks whether they live locally / are an OAP and returns the amount...

Write a FULL Java procedural program for one human player to play a "Higher or Lower" card game. In this game, each card has a value from 1..10 inclusive. There are 4 of each value in the deck, i.e., 40 cards in total. Cards are not replaced in the deck once drawn, i.e., no more than 4 of each value will be drawn. The program starts by asking the player for a target score. The game proceeds in a series of rounds with the program repeatedly drawing and showing a card from the deck to the player one at a time. Each time, it asks the player to enter "h" (higher) or "l" (lower) to guess whether the next card drawn will be higher or lower in value. The player gains a point if they guess correctly. The game continues until the player guesses incorrectly or the target score is reached. When the game ends, it prints either a "You win!" or a "Nice try, you scored ..." message as illustrated below. The image provided shows two examples of the required program behaviour: (bold is keyboard input...