public static void main(String[] args) { MethodTrace trace0bj = new MethodTrace(); traceObj.square(5); System.out.print(" and "); traceObj.divide(4,2); }
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- Java- Consider this method declaration: void quiz(int i) { if (i > 1) { quiz(i/2); quiz(i/2); } system.out.print(“*”); } How many asterisks are printed by the method call quiz(4) ?Identify errors from the following program and correct them. import java.swing.*; import java.awt.*; public class Cake extends Panel { public final double CREAM_CHEESE = 0.50 public final double BUTTER = 0.25; public final double PEACH_JELLY = 0.75; public final double BLUEBERRY_JAM = 0.75; private JCheckBox creamCheese; private JCheckBox butter; private JCheckBox peachJelly; private JCheckBox blueberryJam; public Cake() { setLayout new GridLayout(4, 1)); creamCheese = new JCheckBox("Cream cheese"); butter = new JCheckBox("Butter"); peachJelly = new JCheckBox("Peach jelly"); blueberryJam = new JCheckBox("Blueberry jam"); setBorder(BorderFactory.createTitledBorder("Cake Decorations")); add(creamCheese); add(butter); add(peachJelly); add(blueberryJam); } public double getDecorationCosts() { double decorationCosts = 0; if (creamCheese.isSelected()) decorationCosts += CREAM_CHEESE; if (butter.isSelected()) decorationCosts += BUTTER; if (peachJelly.isSelected())…Please ASaP. Complete method printPopcornTime(), with int parameter bagOunces, and void return type. If bagOunces is less than 2, print "Too small". If greater than 10, print "Too large". Otherwise, compute and print 6 * bagOunces followed by " seconds". End with a newline. Example output for ounces = 7: 42 seconds import java.util.Scanner; public class PopcornTimer {public static void printPopcornTime(int bagOunces) { /* Your solution goes here */ } public static void main (String [] args) {Scanner scnr = new Scanner(System.in);int userOunces; userOunces = scnr.nextInt();printPopcornTime(userOunces);}} .
- Write a java program as in the next class diagram, such as: SimpleCalc2() method only calls find method. find() method: asks the user to enter two numbers and a math operation like(+,-,*./) and prints the result like (inputs and outputs only)The Fibonacci sequence begins with 0 and then 1 follows. All subsequent values are the sum of the previous two, for example: 0, 1, 1, 2, 3, 5, 8, 13. Complete the fibonacci() method, which has an index, n (starting at 0), as a parameter and returns the nth value in the sequence. Any negative index values should return -1. Ex: If the input is: 7 the output is: fibonacci(7) is 13Write a recursive method in java public static long numPaths(int r, int c) which can solve the following scenario: a checker is placed on a checkerboard. What are the fewest moves to get to the upper left corner(0,0)? You can only move sideways or vertically. No diagonal moves. Once you have that calculation, how many different ways are there to get to the upper left corner? this is my code but I am getting stock overflow, I'm not reaching my base case. public static long numPaths(int r, int c) { //base case if (r==0 && c==0 || r==0 || c==0) return 1; else { return numPaths(r, c--) + numPaths(r--, c); } }
- A dog is running up a staircase with n steps and can hop either 1 step, 2 steps, or 4 steps at a time. Implement a method to count how many possible ways the dog can run up the stairs. Note that for n = 1, 2, and 4 there are 1, 2, 6 ways to run up the stairs, respectively. [Adapted from CCI, pg. 150]Manually trace the execution of the following Java code segment: (c) if the following method is declared: public static void drawLine(int num, char ch) { for (int i = 1; i <= num; i++) { System.out.print(ch); } } What does the statement drawLine(10, ‘$’) do?JAva Implement a class Robot that simulates a robot wandering on an infinite plane. The robot is locatedat a point with integer coordinates and faces north, south, east, or west. Supply methods:public void turnLeft()public void turnRight()public void move()public Point getLocation()public String getDirection()The turnLeft and turnRight methods change the direction but not the location. The move method movesthe robot by one unit in the direction it is facing. The getDirection method returns a string “N”, “S”,“E”, “W”. For the new object, the initial location and facing should be specified. For the initial facing, 0means north, 1 means east, 2 means south, and 3 means west.A tester class, RobotTester, has been provided as follows to help you how to implement the Robot class.Therefore, implement the Robot class such that the following RobotTester class can be executed withoutany changes.import java.awt.Point;/**A class to test the Robot class.*/public class RobotTester{/**Tests the…
- Implement the following method to move a pawn piece in chess: public class Pawn extends Piece { public Pawn(int x, int y, Side side, Board board) { super(x, y, side, board); } @Override public boolean canMove(int destX, int destY) { if((destX > 7 || destY > 7 ) || (destX < 0 ||destY < 0)) { return false; }else {Given the following recursive method: public static int think(int x) { if(x<10) if(x%2!=0) return x; else return 0; else if(x%2!=0) return x%10 + think(x/10); else return think(x/10); } Trace (in details) the calling of the above method with any input from your choice such that the returned value will be 194.2.3: Method definition: Volume of a pyramid. Define a method pyramidVolume with double parameters baseLength, baseWidth, and pyramidHeight, that returns as a double the volume of a pyramid with a rectangular base. Relevant geometry equations: Volume = base area x height x 1/3Base area = base length x base width.(Watch out for integer division). import java.util.Scanner; public class CalcPyramidVolume { //answer goes here// public static void main (String [] args) { Scanner scnr = new Scanner(System.in); double userLength; double userWidth; double userHeight; userLength = scnr.nextDouble(); userWidth = scnr.nextDouble(); userHeight = scnr.nextDouble(); System.out.println("Volume: " + pyramidVolume(userLength, userWidth, userHeight)); }}