Create a method that returns a string where for every char in the original, there are two chars. Example: method ("wat") → "wwaatt" method ("java") → "jjaavvaa" method ("HelloWorld") → "HHeellooWWoorrlldd" Method declaration: public String method(String str){                 //answers here }

Q: Please do this in Java! 13. isPrime Method A prime number is a number that is evenly divisible only…

A: Prime numbers : A number is said to be a prime number if the factors of the number are 1 and itself.…

Q: Write a static method userPasswordMatch(): Takes 2 String (s1, s2) input Define a boolean variable…

A: Solution:   Given, Write a static method userPasswordMatch(): Takes 2 String (s1, s2) input…

Q: All methods in this class are public. -int ID -name -status (int ID, String name, String status)…

A: False. The methods belonging to the class are not public.

Q: How to code using Netbeans: 1.)Public int getHoursWorked()- optional (created in main method). 2.)…

A: The main() function along with the said functions in Java are shown in the following steps.

Q: In this class all the methods have public modifiers. Instructor -int ID -String name -String status…

A: SOLUTION: TRUE The class is basically the blueprint using which the objects are created. The method…

Q: 2. Write a program that simulates tossing a coin. Prompt the user for how many times to toss the…

A: Step 1 : STARTStep 2 : declare required variablesStep 3 : if result is 0 then return heads else…

Q: public Account(String name) - Constructor: create an account with the given name and initial balance…

A: In Java, classes are collections of variables and functions that operate on those variables. The…

Q: Write a program in Java called StringIndex. Create a method called printIndex that passes your…

A: Step 1: Declare class StringIndex. Step 2: Define the method printIndex() which takes a string as…

Q: Palindrome is a word that reads the same backward as forward, e.g., madam or racecar. Write a…

A: Please find the answer below :

Q: Write a method called upper that takes a lowercase character as a parameter and converts the…

A: Program: //imported Scanner for user input import java.util.Scanner; //created class public class…

Q: method5 that accepts a string as its parameter an vo letters of the parameter) in upper case…

A: Approach To convert the last two characters of a string "upperCase" in upper case, we will use the…

Q: 1. Write the method named shift3() You are given a String str. Return a new String where all of the…

A: The coding example as per the requirement will be as follows : public class Shift3 {      public…

Q: Part I Write a method that takes two parameters: integer n, char operation. If the given operation…

A: Required:

Q: Java programming-see attached

A: Ask the user to enter a word or phrase. Create a tool to separate vowels from the input. Remember…

Q: OR JAVA Write a method that takes a string as a parameter, and returns the inverse of the string.…

A: import java.util.*;class ReverseString{  public static void main(String args[])  {    String…

Q: This method returns a string with a number of horizontal bars that correspond to the bars parameter.…

A: To print this pattern, we have to get the ASCII values of the alphabets and then we can get the…

Q: write a public static method named replaceFirst that takes in a String s and a char c as arguments.…

A: logic:-  if string is null return null else if string is blank return blank else res =…

Q: IN JAVA When people enter their telephone numbers into a form they use many different formats. Some…

A: The JAVA Code is given below with code and output screenshot Happy Coding ?

Q: Write a public static method named getStringTitleCased that takes in 1 argument of type String and…

A: The answer of this question is as follows:

Q: * Returns a new string with s2 inserted in the middle of string sl * for example, insertInMiddle…

A: Write a method in Java that takes two strings s1, and s2 as the parameters, and returns a new string…

Q: Write a static method that draws an arrow line from astartingpoint to an ending point in a pane…

A: Program structure Import all necessary classes to create an arrow line. Create a class Line1 that…

Q: In Java, isn't a String an object? When I pass a String from method A to void method B as a…

A: Hey there, I am writing the required solution based on the above given question. Please do find the…

Q: The signature of "public int getStringLength(String str)" method is: O public int…

A: In the method signature, we do not have return type of method and the names of the parameters.

Q: What is the syntax to call the static method, animalExists? Choose one of the following from the…

A: The problem is based on the basics of classes and objects in java programming language.

Q: Below is the main method header: public static void main (String[] args) Identify the elements from…

A: Here the function is public static void main(String[] args)   This is a function from Java.

Q: Twin prime numbers, the difference between them is 2. Write a method that prints all duplicate…

A: Read the limit n. For i to n: Check which numbers are prime. then for those prime numbers, Check…

Q: Write a method specification for the method below. public String getDefinitionFromDictionary(String…

A: Solution:   Given, Write a method specification for the method below.public String…

Q: Code with comments and output screenshot. Thank you!!   Write a java method that receives a string…

A: Note: This code should be rewritten instead of copying to the compiler otherwise it will throw a…

Q: List the name and return type of this method: public String getCode(){ return code;}

A: Given Method is : public String getCode(){ return code;}   syntax for a method is as follows:…

Q: The makeSound() method for Pig should return: "name says: oink oink oink!" The makeSound() method…

A: java program using the interface  makeSound() method for Pig should return: "name says: oink oink…

Q: modify it to create a class that contains a static method; the method takes a string as a parameter…

A: Program:   import java.util.Scanner;   //class class ABC{         public static boolean…

Q: Add a static method, public static void changeLetter (StringBuilder sb, char letter) Convert all…

A: The function converts StringBuilder string into char array. For loop is used to iterate over the…

Q: this code, the integer on each line shows the line number that is not part of code: what is the…

A: Please find the answer below

Methods of StringBuilder class

The StringBuilder class can be used to create mutable strings. The methods defined in the StringBuilder class are widely used to manipulate and concatenate strings. It is a non-synchronized class which has public methods that can be accessed by multiple threads. It is not thread-safe.