Answered: 1 import java.util.Scanner; 2 3 public…

1 import java.util.Scanner; 2 3 public class DeclaringVariables { public static void main(String[] args) { 4 5 6 * Your solution goes here */ 7 System.out.println(numHouses); } 8 9

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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Similar questions

Examine this code and determine what happens when it is run: 1 public class Test { int x; 2 3 public Test(String t){ System.out.println("Test"); } public static void main(String[] args) { Test test = new Test ("boo"); System.out.println(test.x); } 4 5 6 7 8 10 } The program has a compile error because Test does not have a default constructor. The program has a compile error because System.out.println method cannot be invoked from the constructor. ) The program runs successfully and prints out: Test O The program has a compile error because you cannot create an object from the class that defines the object.
1 import java.util.Scanner; 2 3 public class LabProgram { m & in 6780 4 5 7 } public static void main(String[] args) { /* Type your code here. */ }
public class main { public static void main(String [] args) { Dog dog1=new Dog(“Spark”,2),dog2=new Dog(“Sammy”,3); swap(dog1, dog2); System.out.println(“dog1 is ”+ dog1); System.out.println(“dog2 is ”+ dog2); } public static void swap(Dog a, Dog b) { String nameA = a.getName(); String nameB = b.getName(); a.setName(nameB); b.setName(nameA); } What is the output of the main()?
Given string inputStr on one line and integers idx1 and idx2 on a second line, output "Match found" if the character at index idx1 of inputStr is equal to the character at index idx2. Otherwise, output "Match not found". End with a newline. Ex: If the input is: eerie 4 1 then the output is: Match found Note: Assume the length of string inputStr is greater than or equal to both idx1 and idx2.
Using Java.
import java.util.Scanner;public class MP2{public static void main (String[] args){//initialization and declarationScanner input = new Scanner (System.in);String message;int Option1;int Option2;int Quantity;int TotalBill;int Cash;int Change;final int SPECIALS = 1;final int BREAKFAST = 2;final int LUNCH = 3;final int SANDWICHES = 4;final int DRINKS = 5;final int DESSERTS = 6;//For the Special, Breakfast, Lunch Optionsfinal int Meals1 = 11;final int Meals2 = 12;final int Meals3 = 13;final int Meals4 = 14;//First menu and First OptionSystem.out.println("\t Welcome to My Kitchen ");System.out.println("\t\t SPECIALS");System.out.println("\t\t [2] BREAKFAST MEALS");System.out.println("\t\t [3] LUNCH MEALS");System.out.println("\t\t [4] SANDWICHES");System.out.println("\t\t [5] DRINKS");System.out.println("\t\t [6] DESSERTS");System.out.println("\t\t [0] EXIT");System.out.print("Choose an option ");Option1 = input.nextInt();//first switch case statementsswitch(Option1){case (SPECIALS):message…
2-7 Given the code below, which lines are valid and invalid.
import java.util.Scanner; public class LabProgram { /* Define your method here */ public static void main(String[] args) { Scanner scnr = new Scanner(System.in); /* Type your code here. */ }}
import java.util.Scanner;public class main{public static void main(String[] args){Scanner sc = new Scanner(System.in):int year, day, weekday;String month;String outday = "";System.out.printf("Enter the month%n");month = sc.nextLine();System.out.printf("Enter the day%n");month = sc.nextInt();weekay = find_day(month, day);outday = out_weekday(weekday);System.out.printf("The day is: %s%n", outday);}} Change the program from the previous example to take command line arguments instead of using the Scanner. For example, running the program like this:> java OutDays March 14will output the weekday string (which is Thursday) on the console for March 14, 2019). public static void main(String[] args){ int year, day, weekday; String month; String outday = ""; // #### your code here for accessing the command line arguments weekday = find_day(month, day); outday = out_weekday(weekday); System.out.printf("The day is: %s%n", outday);}
I have this code: import java.util.Scanner; public class CalcTax { public static void main(String[] args) { Scanner sc = new Scanner(System.in); // Welcome message System.out.println("Welcome to my tax calculation program."); // Declare the variables int i, pinCode, maxRetries = 3; String choice; // Get the PIN code for (i = 0; i < maxRetries; i++) { System.out.print("Please enter the PIN code: "); pinCode = sc.nextInt(); if (pinCode == 5678) { break; } System.out.println("Invalid pin code. Please try again."); } if (i == maxRetries) { System.out.println("Invalid pin code. You have reached the maximum number of retries."); System.exit(0); } // Get the income, interest, deduction, and paid tax amount double income, interest, deduction, paidTax; do { System.out.print("Please…