How do I create a code that has a public static method named replaceFirst that takes in a String s and a char c as arguments. The method will return a modified String replacing the first character with the one that was passed in. (Do not print out the String) Java

Please help me fix this program. It is constantly saying I have duplicates of class main and many more Main. Java is below as well as my gui which is the photos (the gui is my problem) import java.util.*; public class Main { //Inputs a one character string and returns True if the character is a letter (i.e. a to z or A to Z). Returns false if it is not. A function to check that the password or encryption key is valid. public static boolean isALetter(char letter){ if( (letter >= 'a' && letter = 'A' && letter =-32767 && encryptKey

PROBLEM STATEMENT: Use string interpolation to insert "INSERTED" into to the parameter str! public class StringInterpolation{public static String solution(String str){// ↓↓↓↓ your code goes here ↓↓↓↓return null;. Can you Help me with this Question The Language is Java

Need two methods in Java to be used in a different class first method returns Julian day from date entered ex:(8/12/21) Second method returns the reformatted date in Julian format

python-Exercise 1 Write a python program to display the greater number between 2 numbers. The numbers are given by user. Input : 17 -6 Output: The greatest number is 17 2.Use a class and add a method called greatestNumber

In this assignment you will demonstrate your knowledge of debugging by fixing the errors you find in the program below. Fix the code, and paste it in this document, along with the list of the problems you fixed.This example allows the user to display the string for the day of the week. For example, if the user passed the integer 1, the method will return the string Sunday. If the user passed the integer 2, the method will return Monday. This code has both syntax errors and logic errors. Hint: There are two logic errors to find and fix (in addition to the syntax errors).Inport daysAndDates.DaysOfWeek;public class TestDaysOfWeek {public static void main(String[] args) {System.out.println("Days Of week: ");for (int i = 0;i < 8;i++) {System.out.println("Number: " + i + "\tDay Of Week: " + DaysOfWeek.DayOfWeekStr(i) )}}}package daysAndDatespublic class DaysOfWeek {public static String DayOfWeekStr(int NumberOfDay) {String dayStr = ""switch (NumberOfDay) {case 1:dayStr =...

task-5 Change Summation Integers problem to Finding the minimumproblem. Make sure you properly wrote/updated all text messages, method names,and math calculations.Hint: You can use java.lang.Math.min() method.Example: System.out.printf("The min of the integers %4d and %4d and %4dis %7d\n", a, b, c, MinTest(a, b, c));Submit the source code files (.java files) and the console output screenshots

Need help with 8,9, and 10 if possible. Java Coding

True or False: (a) In a debugger, we can choose whether to step into, step over, or step out of a particular method call. (b) Debuggers, tests, and println() statements are all legitimate ways to help us find errors in our code.

public class utils { * Modify the method below. The method below, myMethod, will be called from a testing function in VPL. * write one line of Java code inside the method that adds one string * to another. It will look something like this: * Assume that 1. String theInput is 2. string mystring is ceorge неllo, пу nane is * we want to update mystring so that it is неllo, пу nane is Ceorge */ public static string mymethod(string theInput){ System.out.println("This method combines two strings."); Systen.out.println("we combined two strings to make mystring); return mystring;

/** 2. Write the method named countChar() * You are given a String str, and a char ch. Return the number of times that ch appears inside str, but ignore case. * * * Oh, and you can't use the classification methods in the Character class. Use plain if statements, remembering that you can check if ch is lowercase by checking if it is between lowercase 'a' and lowercase 'z', inclusive. Likewise, check if between 'A' and 'Z' for capital. To convert lowercase to uppercase, subtract the difference between lowercase 'a' and uppercase 'A' ('a'-'A') from the lowercase character. Add this difference to convert from uppercase to lowercase. * * * * * * Examples: countChar("Abcdefg", 'a') returns 1 countChar("xxXx", 'x') returns 4 countChar("", 'q') returns 0 * * @param str the String to search through @param ch the char to count (not case sensitive) @return the count of ch in str * */ public int countChar(String str, char ch) { // Complete the countChar method here }

Program to compute interest = p * r * t, where p = 10ドルK, rate = 6%, t = 10 years; these values are to be passed from main() Besides main() the program has two methods: one that computes the interest and on that rounds interest to two decimal places public class DisplayInterest public static void main(String[] args) call a method that will do the computation with values for the above variables; with the exception of year, they are double main() displays computed interest after rounding computation method() rounding method() Note:- Please type and execute this java program and also need an output for this java program.

(In Java language) Create a class Called NetflixDemo Create two objects "user1" and "user2" of the Netflix class pictured below) Set various class variables for the Netflix class using these two objects. Call various methods of Netflix class using these two objects. public class Netflix {public String movies [] = new String[10];public String trendingTop5 [] = new String[5];public String continueWatching [] = new String[5];public String username;public String password;private boolean isAuthenticated;public double balance;public int subscriberSinceYear;public static void logininfo() {Scanner input = new Scanner(System.in);System.out.println("Enter the username");String username = input.nextLine();System.out.println("Enter the password");String password = input.nextLine();boolean isAuthenticated = true;System.out.println(isAuthenticated + " , You have successfully logged in ");System.out.println();}public static void trendingList(){Scanner input = new...