import java.util.*; public class Main{ public static void main(String[] args) { Scanner sc= new Scanner(System.in); int a1= sc.nextInt(); int b1=sc.nextInt() ; int c1=b1/2; int i =1 ; while(i<=c1){ for( int j=1 ; j<=c1-i ; j++){ System.out.print(" "); } for (int k=1; k<=a1; k++){ System.out.print("="); } System.out.print("\n"); a1=a1+2; i++; } } } a) provide commented code for the following code

import java.util.Scanner;/** This program computes the time required to double an investment with an annual contribution.*/public class DoubleInvestment{ public static void main(String[] args) { final double RATE = 5; final double INITIAL_BALANCE = 10000; final double TARGET = 2 * INITIAL_BALANCE; Scanner in = new Scanner(System.in); System.out.print("Annual contribution: "); double contribution = in.nextDouble(); double balance = INITIAL_BALANCE; int year = 0; // TODO: Add annual contribution, but not in year 0 do { year++; double interest = balance*(RATE/100); balance = (balance+contribution+interest); } while(balance< TARGET); System.out.println("Year: " + year); System.out.printf("Balance: %.2f%n", balance); }}

Complete the isExact Reverse() method in Reverse.java as follows: The method takes two Strings x and y as parameters and returns a boolean. The method determines if the String x is the exact reverse of the String y. If x is the exact reverse of y, the method returns true, otherwise, the method returns false. Other than uncommenting the code, do not modify the main method in Reverse.java. Sample runs provided below. Argument String x "ba" "desserts" "apple" "regal" "war" "pal" Argument String y "stressed" "apple" "lager" "raw" "slap" Return Value false true false true true false

Fix all logic and syntax errors. Results Circle statistics area is 498.75924968391547 diameter is 25.2 // Some circle statistics public class DebugFour2 { public static void main(String args[]) { double radius = 12.6; System.out.println("Circle statistics"); double area = java.Math.PI * radius * radius; System.out.println("area is " + area); double diameter = 2 - radius; System.out.println("diameter is + diameter); } }

1 public class Main { 1234567 7 8 9 10 11 ENERGET 12 13 14 15 16 17 18} public static void main(String[] args) { String present = ""; double r = Math.random(); // between 0 and 1 if (r>>>

public class Qla { Run | Debug public static void main (String [] args) { int n = 1000; int mySum 0; %3D for (int i = n; i>= 0; i--) { %3D if (i % 2 == 0) { mySum += i; } } Stdout.println(mySum);

Fix all errors to make the code compile and complete. //MainValidatorA3 public class MainA3 { public static void main(String[] args) { System.out.println("Welcome to the Validation Tester application"); // Int Test System.out.println("Int Test"); ValidatorNumeric intValidator = new ValidatorNumeric("Enter an integer between -100 and 100: ", -100, 100); int num = intValidator.getIntWithinRange(); System.out.println("You entered: " + num + "\n"); // Double Test System.out.println("Double Test"); ValidatorNumeric doubleValidator = new ValidatorNumeric("Enter a double value: "); double dbl = doubleValidator.getDoubleWithinRange(); System.out.println("You entered: " + dbl + "\n"); // Required String Test System.out.println("Required String Test:"); ValidatorString stringValidator = new ValidatorString("Enter a required string: "); String requiredString =...

using System;public static class Lab3_2{public static void Main(){// declare the variables and constantsconst double FLAT = 1.25;double weight;double cost, pricePerKg = 0;// Input the weightConsole.Write("Enter a positive weight of the package => ");weight = Convert.ToDouble(Console.ReadLine());// Determine the cost per kilogramif (weight <= 0)Console.WriteLine("*** Invalid weight");else if (weight < 1)pricePerKg = 0.25;else if (weight <= 3.5)pricePerKg = 0.5;else (weight > 3.5)pricePerKg = 1.0;// Compute the cost to send the packageif (weight > 0)cost = weight * pricePerKg + FLAT;elsecost = 0;// Output the resultsConsole.WriteLine("The cost to send the package is {0:C}",cost);Console.ReadLine();}} Remove the error from the given program and run it for input weight 2.5.

import java.util.Scanner; public class LabProgram { // Recursive method to draw the triangle public static void drawTriangle(int baseLength, int currentLength) { if (currentLength <= 0) { return; // Base case: stop when currentLength is 0 or negative } // Calculate the number of spaces needed for formatting int spaces = (baseLength - currentLength) / 2; if (currentLength == baseLength) { // If it's the first line, don't output spaces before the first '*' System.out.println("*".repeat(currentLength) + " "); } else { // Output spaces and asterisks System.out.println(" ".repeat(spaces) + "*".repeat(currentLength) + " "); } // Recursively call drawTriangle with the reduced currentLength drawTriangle(baseLength, currentLength - 2); } public static void drawTriangle(int baseLength) { drawTriangle(baseLength, baseLength); } public static...

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()?

public class Animal { public static int population; private int age; } public Animal (int age) { this.age = age; population++; } + msg); public void say (String msg) { System.out.print("Saying: " System.out.print(" for "); System.out.print(getHuman Years()); System.out.println(" years."); } public int getHuman Years() { return age; } public class Mammal extends Animal { private String species; public Mammal(String species, int age) { super (age); this. species species; } } } = public int getHuman Years() { if (species.equals("dog")) 1 else return super.getHumanYears() * 7; return super.getHumanYears(); €

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...

using System; class HelloWorld { static void Main() { int rows=21; int columns=76; for(int i=0;i<rows;i++) //for loop for printing the pattern for 21 rows { for(int j=1;j<=columns;j++) //for loop for printing the pattern in 76 columns { if((i+j)%7!=1 ) //if the addition of i and j does not give remainder of 1 when divided by 7 then Console.Write("-"); //print dash - on console else //otherwise peint a space on console Console.Write(" "); } Console.WriteLine(); //print a newline for printing on new row... } } }