3.1- Which statement(s) are true? Choose all that apply. a. This code prints "123" to the output. b. If you remove the "public" modifier from the ClassB, the code writes "123" to the output. c. If you remove the "public" modifier from the method myMethod, the code prints "123" to the output. d. This code does not compile 3.2- What do you expect if you remove the public keyword from the ClassB

3.1- Which statement(s) are true? Choose all that apply. a. This code prints "123" to the output. b. If you remove the "public" modifier from the ClassB, the code writes "123" to the output. c. If you remove the "public" modifier from the method myMethod, the code prints "123" to the output. d. This code does not compile 3.2- What do you expect if you remove the public keyword from the ClassB

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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/** 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 }
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Use Java program to add a method printReceipt to the CashRegister class. The method should print the prices of all purchased items and the total amount due. Hint: You will need to form a string of all prices. Use the concat method of the String class to add additional items to that string. To turn a price into a string, use the call String.valueOf(price). Also, the payment information will need to be the same as the price information. Here is the CashRegister class: /** A cash register totals up sales and computes change due.*/public class CashRegister{ private double purchase; private double payment; /** Constructs a cash register with no money in it. */ public CashRegister() { purchase = 0; payment = 0; } /** Records the sale of an item. @param amount the price of the item */ public void recordPurchase(double amount) { purchase = purchase + amount; } /** Processes a payment received from the customer. @param…
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Hello,,,. I hope you can help me with this code.. The questions to be answered are: (PLEASE REFER TO THE PHOTO FOR THE CODE)1. WHAT IS THE OUTPUT OF THE PROGRAM?2. HOW DOES THE PROGRAM WORK?
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Java code using other methods within the main method.