Java: An Introduction to Problem Solving and Programming (7th Edition)
Java: An Introduction to Problem Solving and Programming (7th Edition)
7th Edition
ISBN: 9780133766264
Author: Walter Savitch
Publisher: PEARSON
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Chapter 3.1, Problem 7STQ

Explanation of Solution

Comparison of “int” variables:

If “x1” and “x2” are two variables of type “int”, then the values of the variables are compared as “x1 == x2”.

Example:

//Import necessary header files

import java.util.*;

//Define the class

class Main

{

    //Define the main() method

    public static void main(String[] args)

    {

        //Initialize the variables

        int x1 = 10;

        int x2 = 10;

        //Check the condition

        if(x1 == x2)

        {

            //True, print the statement

            System...

Explanation of Solution

Comparison of “int” variables:

  • • If “x1” and “x2” are two variables of type “string”, then the values of the variables are compared as “x1.equals(x2)”.
    • ○ The method “equals()” mention the operator “= =”.
    • ○ It always returns the Boolean values, it doesn’t throw any exception.

Example:

//Import necessary header files

import java.util.*;

//Define the class

class Main

{

    //Define the main() method

    public static void main(String[] args)

    {

        //Initialize the string variables

        String x1 = "10"

        String x2 = "10"

        //Check the condition

        if(x1.equals(x2))

        {

            //True, print the statement

            System...

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Students have asked these similar questions
Suppose variable1 and variable2 are two variables that have been given values.How do you test whether they are equal when the variables are of type int? Howdo you test whether they are equal when the variables are of type String?
2. How do you use "else if" and "else"?
What kind of string value will be cast false by using bool() function, although only zero are cast false in integer type? And how about the other type?

Chapter 3 Solutions

Java: An Introduction to Problem Solving and Programming (7th Edition)

Ch. 3.2 - Suppose number is a variable of type int that has...Ch. 3.2 - What output is produced by the following...Ch. 3.2 - What output is produced by the following...Ch. 3.2 - What output is produced by the following...Ch. 3.3 - What output is produced by the following code?Ch. 3.3 - Suppose you change the code in the previous...Ch. 3.3 - What output is produced by the following code?Ch. 3.3 - What output is produced by the following code?Ch. 3.3 - Suppose you change the first line of the code in...Ch. 3.3 - Prob. 20STQCh. 3.4 - Prob. 21STQCh. 3.4 - Prob. 22STQCh. 3.4 - Write code for a JOptionPane dialog that will ask...Ch. 3 - Write a fragment of code that will test whether an...Ch. 3 - Write a fragment of code that will change the...Ch. 3 - Suppose you are writing a program that asks the...Ch. 3 - Prob. 4ECh. 3 - Consider the following fragment of code: What is...Ch. 3 - We would like to assess a service charge for...Ch. 3 - What is the value of each of the following boolean...Ch. 3 - The following code fragment will not compile. Why?...Ch. 3 - Prob. 9ECh. 3 - Consider the boolean expression (2 5) (x 100))....Ch. 3 - Write a switch statement to convert a letter grade...Ch. 3 - Consider the previous question, but include + or ...Ch. 3 - Imagine a program that displays a menu of five...Ch. 3 - Repeat the previous exercise, but define an...Ch. 3 - Repeat Exercise 13, but use a multibranch if-else...Ch. 3 - Given that the int variable temp contains a...Ch. 3 - Write Java statements that create a yes-or-no...Ch. 3 - A number x is divisible by y if the remainder...Ch. 3 - Write a program to read in three nonnegative...Ch. 3 - Write a program that reads three strings from the...Ch. 3 - Write a program that reads a one-line sentence as...Ch. 3 - Write a program that allows the user to convert a...Ch. 3 - Write a program that inputs an integer. If the...Ch. 3 - Prob. 7PCh. 3 - Repeat Programming Project 5 of Chapter 2, but...Ch. 3 - Repeat any of the previous Practice Programs using...Ch. 3 - Suppose that we are working for an online service...Ch. 3 - Write a program that reads a string from the...Ch. 3 - Repeat the calorie-counting program described in...Ch. 3 - Repeat Programming Project 5 but in addition ask...Ch. 3 - Repeat Programming Project 11 in Chapter 2, but if...Ch. 3 - Write a program to play the rock-paper-scissor...Ch. 3 - Prob. 9PPCh. 3 - Repeat Programming Project 8 in Chapter 1, but add...
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