public class TrafficLightViewer 2 { 1 3. public static void main(String[] args) 4 Rectangle rl = new Rectangle(50,20,20,60); Ellipse cl Ellipse cl.setColor(Color.RED); Ellipse cl.fil); = new Ellipse(30,40,20,20); 8 9 Ellipse c2 Ellipse c2.setColor(Color.YELLOW); Ellipse c2.fil1(); 10 = new Ellipse(30,70,20,20); 11 12 13 = new Ellipse(30,100,20,20); Ellipse c3 Ellipse c3.setColor(Color.GREEN; Ellipse c3.fill(); 16 17 18 } 19 LO O 4 56 709
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- class WaterSort { Character top = null; // create constants for colors static Character red= new Character('r'); static Character blue = new Character('b'); static Character yellow= new Character('g'); // Bottles declaration public static void showAll( StackAsMyArrayList bottles[]) { for (int i = 0; i<=4; i++) { System.out.println("Bottle "+ i+ ": " + bottles[i]); } } public static void main(String args[]) { //part 1 //create the bottle StackAsMyArrayList bottleONE = new StackAsMyArrayList<Character>(); System.out.println("\nbottleONE:"+ bottleONE+ " size:" + bottleONE.getStackSize()+" uniform? "+ bottleONE.checkStackUniform());…public class Geometry{public static void main(String[] args){//asks for user's choice Scanner in = new Scanner(System.in);displayMenu();selectOption(choice);System.out.println("Enter your choice (1-3): ");int choice1 = in.nextInt();System.out.println("Thanks for using the Geometry Calculator - Goodbye!");//Prints if input is a number that is not one of the choiceswhile(choice1 < 1 || choice1 > 3 ){System.out.println("Invalid choice. Please enter 1 - 3: ");choice1 = in.nextInt();}}/**Displays the menu*/public static void displayMenu(){System.out.println("Welcome to the Geometry Calculator Application");System.out.println("1. Calculate the Area of a Circle");System.out.println("2. Calculate the Area of a Rectangle");System.out.println("3. Calculate the Area of a Triangle");}/** This method calculates the area of the circle@return the area of the circle*/public static double circle()// calculates the area of the circle{Scanner in = new Scanner(System.in);System.out.println("What is…Double any element's value that is less than controlValue. Ex: If controlValue = 10, then dataPoints = {2, 12, 9, 20} becomes {4, 12, 18, 20}. import java.util.Scanner; public class StudentScores { public static void main (String [] args) { Scanner scnr = new Scanner (System.in); final int NUM_POINTS = 4; int [] dataPoints new int [NUM_POINTS]; int controlValue; int i; controlValue = scnr. nextInt (); for (i = 0; i < dataPoints.length; ++i) { = scnr.nextInt (); dataPoints [i] } /* Your solution goes here * / for (i = 0; i < dataPoints.length; ++i) { System.out.print (dataPoints[i] + %3D " ") ; } System.out.println ();
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- Trace through the following program and show the output. Show your work for partial credit. public class Employee { private static int empID = 1111l; private String name , position; double salary; public Employee(String name) { empID ++; this.name 3 пате; } public Employee(Employee obj) { empID = obj.empĪD; пате %3D оbj.naте; position = obj.position; %3D public void empPosition(String empPosition) {position = empPosition;} public void empSalary(double empSalary) { salary = empSalary;} public String toString() { return name + " "+empID + " "+ position +" $"+salary; public void setName(String empName){ name = empName;} public static void main(String args[]) { Employee empOne = new Employee("James Smith"), empTwo; %3D empOne.empPosition("Senior Software Engineer"); етрOпе.етpSalary(1000); System.out.println(empOne); еmpTwo empTwo.empPosition("CEO"); System.out.println(empOne); System.out.println(empTwo); %3D етpОпе empOne ;First snippet public static void main(String[] args) { Dog aDog = new Dog("Max"); Dog oldDog = aDog; // we pass the object to foo foo(aDog); // aDog variable is still pointing to the "Max" dog when foo(...) returns aDog.getName().equals("Max"); // true aDog.getName().equals("Fifi"); // false aDog == oldDog; // true } public static void foo(Dog d) { d.getName().equals("Max"); // true // change d inside of foo() to point to a new Dog instance "Fifi" d = new Dog("Fifi"); d.getName().equals("Fifi"); // true } Second snippt public static void main(String[] args) { Dog aDog = new Dog("Max"); Dog oldDog = aDog; foo(aDog); // when foo(...) returns, the name of the dog has been changed to "Fifi" aDog.getName().equals("Fifi"); // true // but it is still the same dog: aDog == oldDog; // true } public static void foo(Dog d) { d.getName().equals("Max"); // true // this changes the name of d to be "Fifi" d.setName("Fifi"); } What is the difference between the first code snippet and the second?…public class Ex08FanTest { public static void main (String[] args){ Ex08Fan fan1= new Ex08Fan(); Ex08Fan fan2= new Ex08Fan(); fan1.setOn(true); fan1.setSpeed(3); fan1.setRadius(10); fan1.setColor("yellow"); fan2.setOn(true); fan2.setSpeed(2); fan2.setRadius(5); fan2.setColor("blue"); fan2.setOn(false); System.out.println("Fan 1:\n" + fan1.toString()); System.out.println("\nFan 2:\n" + fan2.toString()); }}
- public static void main(String[] args) { int a; int b; int c; c = quad(0,1, 2); b = quad(1, 2, 3); a = quad(5, 6, 7); c = c +b+ a; } private static int quad(int a, int b, int c) { int r; r= a +b+ c; return r; } For the code above, how many entries does the activation record for method quad have? During the execution of main, at most how many activation records are existent on the run-time stack?dict1 = {(1,1,1):"red", (2,1,-1):"green", (0,-1,1):"red", (0,0,-2):"blue"}In this case, there are 2 red points, and their centroid is at ( (1+0)/2, (1-1)/2, (1+1)/2 ) = (0.5, 0, 1)Considering that in this example there is only one green and one blue point, they are representing the respective color's centroid. Hence, your function should return the following dictionary:{"red":(0.5,0.0,1.0), "green":(2.0,1.0,-1.0), "blue":(0.0,0.0,-2.0)}public class worksheet3_1 { public static void main(String[] arg) { ShadowingExample example = new ShadowingExample(); example.x = 99; example.sampleMethod(); }}class ShadowingExample { int x; public void sampleMethod() { int x = 0; System.out.println("the value of local variable x = " + ………………………………………………); System.out.println("the value of instance variable x = " + …………………………………………); }} what should be written in the second print statement so that the output is: the value of instance variable x = 99 what should be written in the first print statement so that the output is: the value of local variable x = 0 options are: samplemethod.x this.x shadowingexample.x x Answer 1 Question 1