Write a public class called Main and implement class/static methods for each of the following. Please don't use builtin Java methods for these: 1. (1) Print your full name. public static void displayName 2. (2) Print a 1-dimensional int array (elements should appear on 1 line with spaces between them). public static void displayArray 3. (2) Print a 2-dimensional int array (one row per line). 4. (2) Determine if two 1-dimensional arrays are equal (return boolean). 5. (3) Determine if two 2-dimensional arrays are equal (return boolean). 6. (2) Find the sum of a 1-dimensional array (return int). 7. (3) Find the sum of a 2-dimensional array (return int). 8. (5) Multiply two matrices (2-dimensional arrays) together like so (return int[][]): { {1, 2}, {4, 1}, matA = X matB { {2, 2}, {2, 2}, = matc = { {2, 4}, {8, 2}, } While you are writing these methods, include tests and output for them in your main method

Write a public class called Main and implement class/static methods for each of the following. Please don't use builtin Java methods for these: 1. (1) Print your full name. public static void displayName 2. (2) Print a 1-dimensional int array (elements should appear on 1 line with spaces between them). public static void displayArray 3. (2) Print a 2-dimensional int array (one row per line). 4. (2) Determine if two 1-dimensional arrays are equal (return boolean). 5. (3) Determine if two 2-dimensional arrays are equal (return boolean). 6. (2) Find the sum of a 1-dimensional array (return int). 7. (3) Find the sum of a 2-dimensional array (return int). 8. (5) Multiply two matrices (2-dimensional arrays) together like so (return int[][]): { {1, 2}, {4, 1}, matA = X matB { {2, 2}, {2, 2}, = matc = { {2, 4}, {8, 2}, } While you are writing these methods, include tests and output for them in your main method

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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1. For each statement, circle the response that best completes it. For the first nine statements, consider this Java method and the array shown to its right. array public static int linkSum(int'a, int startLoc, int sunlimit) ( startLoc; int sun 0, 1 while (1>0 & sun sunlimit) { aun- sum + a[i]; 1 = a[i]; } return dum; (i) The expression linkSum (junk, 3, 12) evaluates to a. 13 b. 22 c. 10 d. 1 (ii) The call linkSum (junk, b. 4 a. 1 c. 5 (iii) The call linkSum (junk, Array IndexOutOfBoundsException a. 1 c. 5 0 1 2 3 4 5 6 7 Junk 1 0141711131-1101 211 startLoc d. 6 ,20) results in an infinite loop. e. none of above ,15) results in an being thrown. d. 6 e. none of above b. 2 (iv) In the method above (applied to any array), we can be sure that at the moment that the loop terminates. a. a[i] startLoc || sun >= sunlimit d. 1 = sumlinit c. 1 <0 & sum e. none of the above (v) In the method above, each of int and static is a(n) a reserved word b. variable c. expression (vi) In the method…
Please help to solve this codes. In Java public interface ShapesInterface{ public double getArea(); // This method returns the area of a 2 dimensional shape // or the surface are of a 3 dimensional shape. public double getVolume(); // This method returns the volume of a 3 dimensional shape // or 0 for a 2 dimensional shape. public void displayArea(); // This method displays the name of the shape and its area, // If the shape is 2 dimensional it displays the 2 dimensional area // If the shape is 3 dimensional it displays the surface area of the shape public void displayVolume(); // This method displays the name of the shape and its volume, // This method displays the volume of a 3 dimensional shape and 0 for a 2 dimensional shape. }
Q2: Write the Java code corresponding to the following UML diagram. Then, create two objects from the main method and print their areas and perimeters. Polygon {abstract} # color: String # numberOfSides: int + Shape() + Shape(color:String, numberOfSides:int) + getColor(): String + setColor(color:String): void + getNumberOfSides(): int + setNumberOfSides(sides:int): +abstract getArea(): double +abstract getPerimeter(): double Triangle - sides: int[ ] + Triangle(color:String, numberOfSides:int) + addSide(index:int, sideValue: int): void + getSide(index:int): int + getArea(): double + getPerimeter(): double
Method Overloading is a feature that allows a class to have two or more methods having same name, if their argument lists are different. Argument lists could differ in: 1. Number of parameters. 2. Data type of parameters. 3. Sequence of Data type of parameters. Write different version of method sum() that display the sum of the values received as parameter according to the following main method content: public static void main(String[] args) { sum ( 10, 10 ); sum ( 10, 10, 10 ); sum ( 10.0, 10.0 ); sum ( 10, 10.0 ); sum ( 10.0, 10); } You have to define five functions with the specified types. Then, demonstrate the Argument Promotion concept by reducing the number of method to two.
Write a Java class in which you include the following: 1. A main method that: a. Declares a-one dimensional array of 10 integer elements. b. Asks the user to fill the array. c. Ask the user to enter an integer x. d. Calls the method in question 2. e. Print the result of the method. 2. A java method named "find" that accepts a one-dimensional array as a first parameter, and an integer x as a second parameter. The method should find and return the number of occurrences of x in the array.
In C# using an array Implement the inventory manager class. This class must have methods that do the following: Add a new item to the inventory manager. Remove an item from the inventory manager. Re-stock an item in the inventory manager. Display the items in the inventory manager. Search for an item in the inventory manager by at least two criteria (name, price, quantity, etc.). Test the inventory manager class with a driver program or unit tests. This may be a console application.
Construct a Java class ArrayMethods that includes the static methods described in the table below. Method Return Formal Method Function Name Турe Parameters A populated array Returns the index of the minimum value in the array. of integers. A populated array of integers. findMin int findMax int Returns the index of the maximum value in the array. double A populated array Returns the statistical mean of the values in the array. mean of integers. An empty array of Populates the array with a series of integer values between 0 Integers. populate None and 100 (inclusive) that are randomly generated. Sample input/output is given below: Populated array: [24, 90, 5, 78, 11, 71, 58, 73, 80, 14] The minimum value is at index: 2 The maximum value is at index: 1 The statistical mean is: 50.4
Assume the following method is added to the ArrayQueue class. What does this method do? public void undefined() { if(size < 2) return; if(size == capacity) reallocate(); rear = (rear + 1)%capacity; int f = (front + 1)%capacity; theData[rear] = theData[f]; size++; } Makes the front as rear and the rear as front, if the number of elements in the queue is at least 2. Adds the front element of the queue at the rear of the queue, if the number of elements in the queue is at least 2. Adds the second element of the queue at the rear of the queue, if the number of elements in the queue is at least 2. Exchanges the first and the last elements of the queue, if the number of elements in the queue is at least 2.
java-Math is a class and the following notation is correct: Math.sqrt(4.77); what you can tell from notation: sqrt is a per-object method sqrt is a per-class method sqrt is a per-class data field sqrt is a per-object data field
in computer programming: java Create a rectangle class that can compute the area and the sum of its sides. Create a specialized method that will allow the class to compare other rectangle objects. The comparison should identify the larger rectangle according to the object’s area. You should be able to implement the class where the user provides rectangle dimensions. The program should be able to display which of the rectangle inputs is larger using the Rectangle class method that you defined. Sample output: Enter Length R1: 1 Enter Width R1: 1 Enter Length R2: 2 Enter Width R2: 2 Results: R1 Area: 1 R1 Sum: 2 R2 Area: 4 R2 Sum: 4 R2 is the bigger Rectangle! Note: All characters in boldface are user inputs.
FOR JAVA Write a Java class named Book, which has a name, an author and a pub- lisher. This class must also have a static field (an array with length 100) which holds names of all constructed books, and a static method which returns the number of constructed books.
in java Write a RainFall class that stores the total rainfall for each of 12 months into an array ofdoubles. The program should have methods that return the following:• the total rainfall for the year• the average monthly rainfall• the month with the most rain• the month with the least rainDemonstrate the class in a complete program.Input Validation: Do not accept negative numbers for monthly rainfall figures.