Big Java Late Objects
2nd Edition
ISBN: 9781119330455
Author: Horstmann
Publisher: WILEY
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Chapter 5, Problem 11PP
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Implement a new concat method in the String class you worked on for HW2. The method should return a new String object that represents the text you would end up with if the argument String were "added onto the end of" this String. For example, in the code below, the String object answer should represent the text "bookstore" and true should be printed the screen.
char[] bookA = {'b', 'o', 'o', 'k'};
char[] storeA = {'s', 't', 'o', 'r', 'e'};
char[] bookstoreA = {'b', 'o', 'o', 'k', 's', 't', 'o', 'r', 'e'};
String book = new String(bookA);
String store = new String(storeA);
String bookstore = new String(bookstoreA);
String answer = book.concat(store);
System.out.println(answer.equals(bookstore));
In the text area below, type in your definition of the concat method. (In other words, type in the code that should replace the //TODO comment.) Your code cannot call any methods.
public class String {
private char[] data;
public String(char[] value) {
data = new…
Write a program that prints out the letters of a word, one on each line, in the format "The letter is a."
Write a method lastNameFirst that takes a string containing a name such as "Harry Smith" or "Mary Jane Lee", and that returns the string with the last name first, such as "Smith, Harry" or "Lee, Mary Jane".
Chapter 5 Solutions
Big Java Late Objects
Ch. 5.1 - Consider the method call Math.pow(3, 2). What are...Ch. 5.1 - What is the return value of the method call...Ch. 5.1 - The Math.ceil method in the Java standard library...Ch. 5.1 - It is possible to determine the answer to Self...Ch. 5.2 - What is the value of cubeVolume(3)?Ch. 5.2 - Prob. 6SCCh. 5.2 - Provide an alternate implementation of the body of...Ch. 5.2 - Declare a method squareArea that computes the area...Ch. 5.2 - Consider this method: public static int...Ch. 5.3 - What does this program print? Use a diagram like...
Ch. 5.3 - Prob. 11SCCh. 5.3 - What does this program print? Use a diagram like...Ch. 5.4 - Prob. 13SCCh. 5.4 - What does this method do? public static boolean...Ch. 5.4 - Implement the mystery method of Self Check 14 with...Ch. 5.5 - How do you generate the following printout, using...Ch. 5.5 - Prob. 17SCCh. 5.5 - Prob. 18SCCh. 5.5 - Prob. 19SCCh. 5.5 - The boxString method contains the code for...Ch. 5.6 - Consider the following statements: int...Ch. 5.6 - Consider this method that prints a page number on...Ch. 5.6 - Consider the following method that computes...Ch. 5.6 - The comment explains what the following loop does....Ch. 5.6 - In Self Check 24, you were asked to implement a...Ch. 5.7 - Explain how you can improve the intName method so...Ch. 5.7 - Prob. 27SCCh. 5.7 - What happens when you call intName(0)? How can you...Ch. 5.7 - Trace the method call intName(72), as described in...Ch. 5.7 - Prob. 30SCCh. 5.8 - Which lines are in the scope of the variable i...Ch. 5.8 - Which lines are in the scope of the parameter...Ch. 5.8 - The program declares two local variables with the...Ch. 5.8 - There is a scope error in the mystery method. How...Ch. 5.8 - Prob. 35SCCh. 5.9 - Consider this slight modification of the...Ch. 5.9 - Consider this recursive method: public static int...Ch. 5.9 - Consider this recursive method: public static int...Ch. 5.9 - Prob. 39SCCh. 5.9 - The intName method in Section 5.7 accepted...Ch. 5 - In which sequence are the lines of the Cubes.java...Ch. 5 - Write method headers for methods with the...Ch. 5 - Give examples of the following methods from the...Ch. 5 - Prob. 4RECh. 5 - Consider these methods: public static double...Ch. 5 - Prob. 6RECh. 5 - Design a method that prints a floating-point...Ch. 5 - Write pseudocode for a method that translates a...Ch. 5 - Describe the scope error in the following program...Ch. 5 - For each of the variables in the following...Ch. 5 - Prob. 11RECh. 5 - Perform a walkthrough of the intName method with...Ch. 5 - Consider the following method: public static int...Ch. 5 - Consider the following method that is intended to...Ch. 5 - Suppose an ancient civilization had constructed...Ch. 5 - Give pseudocode for a recursive method for...Ch. 5 - Give pseudocode for a recursive method that sorts...Ch. 5 - Write the following methods and provide a program...Ch. 5 - Write the following methods and provide a program...Ch. 5 - Prob. 4PECh. 5 - Prob. 5PECh. 5 - Prob. 6PECh. 5 - Prob. 7PECh. 5 - Prob. 8PECh. 5 - Write methods public static double...Ch. 5 - Write a recursive method public static String...Ch. 5 - Write a recursive method public static boolean...Ch. 5 - Use recursion to implement a method public static...Ch. 5 - Use recursion to determine the number of digits in...Ch. 5 - Write a method that computes the balance of a bank...Ch. 5 - Write a method that tests whether a file name...Ch. 5 - It is a well-known phenomenon that most people are...Ch. 5 - Prob. 3PPCh. 5 - Use recursion to compute an, where n is a positive...Ch. 5 - Leap years. Write a method public static boolean...Ch. 5 - In Exercise P3.13 you were asked to write a...Ch. 5 - Prob. 10PPCh. 5 - Write a program that reads two strings containing...Ch. 5 - Prob. 12PPCh. 5 - Write a program that reads words and arranges them...Ch. 5 - Prob. 14PPCh. 5 - Write a program that reads two fractions, adds...Ch. 5 - Write a program that prints the decimal expansion...Ch. 5 - Write a program that reads a decimal expansion...Ch. 5 - Write two methods public static void...Ch. 5 - Write a program that reads in the width and height...Ch. 5 - Repeat Exercise P5.19 with hexagonal circle...Ch. 5 - Postal bar codes. For faster sorting of letters,...Ch. 5 - Write a program that reads in a bar code (with :...Ch. 5 - Write a program that converts a Roman number such...Ch. 5 - A non-governmental organization needs a program to...Ch. 5 - Having a secure password is a very important...Ch. 5 - Prob. 30PPCh. 5 - Prob. 31PPCh. 5 - Electric wire, like that in the photo, is a...Ch. 5 - The drag force on a car is given by FD=12v2ACD...
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- Write a program that gets 2 string variables and 2 integer variables from the user, concatenates (joins them together with no space) and displays the strings, then multiplied the two numbers on a new line and displays them with two decimal points.arrow_forwardWrite a method called flipMap() that takes in a map from string keys to string values, and returns a "reverse" or "inverse" version of...arrow_forwardYour task: Remove any word that does not start with a capital letter. For instance, for the input text of "Hello, 2022 world!", we should get "Hello, 2022 !".arrow_forward
- Write a java program that enables the user to enter a string and an index,then cuts the letter in the given index(only cuts the single letter). Then prints the new string without that letterarrow_forwardWrite a program that reads in a string containing three words separated by commasand then outputs that string with each word in a different line.arrow_forwardWrite a method that takes a String and a character as inputs and returns the number of instances of the input character within the input String. For example, if "banana" and 'a' are input into the method, it should return 3. If "apple" and 'p' are input, it should return 2arrow_forward
- An obvious continuation is to use random numbers to create namesfor the stars and planets. Instead of creating random strings of characters, names usually follow certain rules. Select a set of real-world names (e.g. from J.R.R. Tolkien’sworld) and invent a set of rules that they follow. Design and implement a methodthat creates new names based on the set of rules and random numbers.arrow_forwardWrite a method getTopLevelDomain that accepts URL in String format then returns the top level domain. Write in java and use test case examples as result.arrow_forwardWrite a Java program that gets a list of numbers from the user and prints:arrow_forward
- Write a program that reads 10 numbers, finds the largest number, prints it, finds the smallest number, and prints itarrow_forwardcan you solve this please? Adopt appropriate Java animation code to implement the video in the file “test4.wmv” and given that the parametric equation for a circle. x=r*cos(t) y=r*sin(t) with t in range [0, 2p] and r is the radius of the circle. (the circle goes in a loop like in the images, i did my best to try to explain it , please try to do it ) and here is a sample of what they want me to use : package javaapplication1;import java.awt.*;import java.awt.event.*;import javax.swing.*;import java.awt.geom.*;import java.util.Random;import javax.imageio.*;import java.io.File;import java.io.IOException;import java.awt.image.BufferedImage;import java.awt.event.*;import java.util.Calendar; public class JavaApplication1 extends JApplet { public static void main(String[] args) { JFrame frame=new JFrame(); frame.setTitle("hello"); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); JApplet applete =new JavaApplication1(); applete.init();…arrow_forwardFor this problem you will write a method that prints out a pyramid. The boxes in each layer of the pyramid are stacked directly on top of one another (i.e. not offset between two boxes below). For example, below are shown two pyramids, one with base 5 and one with base 6. [] [][] [][][] [][][][] [][][][][] [][][][][][]arrow_forward
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