Introduction to Java Programming and Data Structures, Comprehensive Version (11th Edition)
11th Edition
ISBN: 9780134670942
Author: Y. Daniel Liang
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Videos
Textbook Question
Chapter 6, Problem 6.19PE
(Triangles) Implement the following two methods:
/ ** Return true if the sum of every two sides is
* greater than the third side.*/
public static boolean isValid(
double side1 , double side2, double side3)
/** Return the area of the triangle. */
public static double area(
double side1, double side2, double side3)
Write a test program that reads three sides for a triangle and uses the isValid method to test if the input is valid and uses the area method to obtain the area. The program displays the area if the input is valid. Otherwise, it displays that the input is invalid. The formula for computing the area of a triangle is given in
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
Implement the following two methods:/** Return true if the sum of every two sides is* greater than the third side. */public static boolean isValid(double side1, double side2, double side3) /** Return the area of the triangle. */public static double area(double side1, double side2, double side3)Write a test program that reads three sides for a triangle and uses the isValidmethod to test if the input is valid and uses the area method to obtain the area.The program displays the area if the input is valid. Otherwise, it displays thatthe input is invalid.
Implement the following two functions:
// Returns true if all the sides of the triangle // are same.
bool isValid(double side1, double side2, double side3)
// Returns the perimeter of an equilateral triangle.double perimeter(double side1)
The formula for computing the perimeter is perimeter = 3 * side. Write a test program that reads three sides for a triangle and computes the perimeter if the input is valid. Otherwise, display that the input is invalid.
Q1) Write a method that checks whether two words are anagrams. Two words are anagrams if they contain the same letters in any order. For example, "silent" and "listen" are anagrams. Write a test program that prompts the user to enter two strings and, if they are anagrams, displays "anagram", otherwise displays "not anagram".
Note: The header of the method is as follows:
public static boolean isAnagram(String s1, String s2)
Sample Input #1:
Enter two strings:
Silent
listen
Sample Output #1:
The string “Silent” and “listen” are anagrams.
Sample Input #1:
Enter two strings:
teach
peach
Sample Output #1:
The string “teach” and “peach” aren’t anagrams.
Chapter 6 Solutions
Introduction to Java Programming and Data Structures, Comprehensive Version (11th Edition)
Ch. 6.4 - What are the benefits of using a method?Ch. 6.4 - Prob. 6.4.2CPCh. 6.4 - How do you simplify the max method in Listing 6.1...Ch. 6.4 - Prob. 6.4.4CPCh. 6.4 - Prob. 6.4.5CPCh. 6.4 - Prob. 6.4.6CPCh. 6.4 - Prob. 6.4.7CPCh. 6.4 - Write method headers (not the bodies) for the...Ch. 6.4 - Identify and correct the errors in the following...Ch. 6.4 - Prob. 6.4.10CP
Ch. 6.5 - Prob. 6.5.1CPCh. 6.5 - Identify and correct the errors in the following...Ch. 6.5 - Prob. 6.5.3CPCh. 6.5 - Prob. 6.5.4CPCh. 6.6 - Prob. 6.6.1CPCh. 6.6 - Prob. 6.6.2CPCh. 6.7 - What is hexCharToDecimal ( B)) ? What is...Ch. 6.8 - What is method overloading? Is it permissible to...Ch. 6.8 - What is wrong in the following program? public...Ch. 6.8 - Given two method definitions, public static double...Ch. 6.9 - Prob. 6.9.1CPCh. 6.9 - What is the scope of a local variable?Ch. 6 - (Math: pentagonal numbers) A pentagonal number is...Ch. 6 - (Sum the digits in an integer) Write a method that...Ch. 6 - (Palindrome integer) Write the methods with the...Ch. 6 - (Display an integer reversed) Write a method with...Ch. 6 - (Sort three numbers) Write a method with the...Ch. 6 - (Display patterns) Write a method to display a...Ch. 6 - (Financial application: compute the future...Ch. 6 - (Conversions between Celsius and Fahrenheit) Write...Ch. 6 - Prob. 6.9PECh. 6 - (Use the isPrime Method) Listing 6.7,...Ch. 6 - (Financial application: compute commissions) Write...Ch. 6 - (Display characters) Write a method that prints...Ch. 6 - (Sum series) Write a method to compute the...Ch. 6 - (Estimate ) can be computed using the following...Ch. 6 - (Financial application: print a tax table) Listing...Ch. 6 - Prob. 6.16PECh. 6 - Sections 6.10 and 6.11 6.17 (Display matrix of 0s...Ch. 6 - (Check password) Some Websites impose certain...Ch. 6 - (Triangles) Implement the following two methods: /...Ch. 6 - (Count the letters in a string) Write a method...Ch. 6 - (Phone keypads) The international standard...Ch. 6 - (Math: approximate the square root) There are...Ch. 6 - (Occurrences of a specified character) Write a...Ch. 6 - (Display current date and time) Listing 2.7,...Ch. 6 - Prob. 6.25PECh. 6 - (Palindromic prime) A palindromic prime is a prime...Ch. 6 - (Emirp) An emirp (prime spelled backward) is a...Ch. 6 - (Mersenne prime) A prime number is called a...Ch. 6 - (Twin primes) Twin primes are a pair of prime...Ch. 6 - (Game: craps) Craps is a popular dice game played...Ch. 6 - (Financial: credit card number validation) Credit...Ch. 6 - (Game: chance of winning at craps) Revise...Ch. 6 - (Current date and time) Invoking System....Ch. 6 - (Print calendar) Programming Exercise 3.21 uses...Ch. 6 - (Geometry: area of a pentagon) The area of a...Ch. 6 - (Geometry: area of a regular polygon) A regular...Ch. 6 - (Format an integer) Write a method with the...Ch. 6 - (Generate random characters) Use the methods in...Ch. 6 - (Geomentry: point position) Programming Exercise...
Additional Engineering Textbook Solutions
Find more solutions based on key concepts
What types may the STL stack be based on? By default, what type is an STL stack based on?
Starting Out with C++ from Control Structures to Objects (9th Edition)
Define each of the following terms: supertype subtype specialization entity cluster completeness constraint enh...
Modern Database Management (12th Edition)
1. Read the problem statement. 2. Formulate the algorithm using pseudocode and top-down, stepwise refinement. 3...
Java How To Program (Early Objects)
The contents of this type of file can be viewed in an editor such as Notepad. a. text file b. binary file c. En...
Starting Out with Python (4th Edition)
A(n) _____ is a set of well-defined steps for performing a task or solving a problem.
Starting Out With Visual Basic (7th Edition)
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, computer-science and related others by exploring similar questions and additional content below.Similar questions
- - Use java RECURSION to print out this shape. - You need to call the method 2 times - use 2 or 3 for loops hints: - for (int i = 0; i < ?????; i++) sout(" ") - for (int i = 0; i < ?????; i++) sout(symbol) - put different if statements when you call yourself, one gets activated when you go up, one gets activated when you go down. - This method should be used; public static void printShape4(int row, char symbol, int currentRow) { } !!! do not use other methods, everything should be inside this methodarrow_forward2) Two integers are said to be relatively prime if their greatest common divisor (GCD) is one. For example 12 and 13 are relatively prime, but 12 and 14 are not. a. Write a method called relativelyPrime that accepts two integer parameters A and B. The method should output if A, and B are relatively prime or nat. Use the following method header: public static void relativelyPrime(int A, int B) b. Write a test program (main) to test the method by asking the user to input two positive integers X and Y. Then the program will call the method relativelyPrime to output if X and Y are relatively prime or not. Sample Run 1: Enter Two positive integers X and Y: 12 13 12 and 13 are relatively prime Sample Run 2: Enter Two positive integers X and Y: 12 14 12 and 14 are not relatively primearrow_forwardWrite a method that generates and outputs a random permutation of numbers between 1 and 5. A sample output of the method is 2, 4, 1, 3, 5.(C# CONSOLE PROGRAMMİNG)arrow_forward
- (Written in Java or Python) Write a program that allows a user to select 3 points on a graphics panel. Then, draw a triangle using these 3 points. Allow the user to specify a number of random points to be generated inside of the triangle. For each random point that is within the boundaries of the triangle draw a small dot at each of the points that are halfway between the randomly generated point and each vertex of the triangle. Do not draw the randomly generated point. Allow the user to repeat the process without removing the old dots. Allow the user to clear the screen.arrow_forwardMethod to check if x is power of 2*/ static boolean isPowerOfTwo (int x) { /* First x in the below expression is for the case when x is 0 */ return x!=0 && ((x&(x-1)) == 0); }.arrow_forward4- Write a program that reads the average of 30 students and find the number of pass students , the number of fail students then print the results. 5- Write a program that reads 20 numbers then find the number of negative and positive numbers and the number of numbers equal to zero and print the results. 6- Write a program to read three numbers A,B,C then find whether A,B,C can form the sides of a triangle, if yes compute the parameter of the triangle , if no print the massage ( not a triangle), then determine whether A,B,C form the side of an (a)) equilateral triangle ,b) isosceles triangie ,c)) right angle triangle Hint: ( A,B,C can form a triangle if each side is less than the sum of the other two sides)arrow_forward
- List all correct answers where applicable. 1. Analyze the following code: boolean even = false; if (even = true) { System.out.println("It is even"); } a. The program has a compile error. b. The program has a runtime error. c. The program runs fine but displays nothing. d. The program runs fine and displays It is even. 2. Suppose x = 1, y = -1, and z = 1. What is the output of the following statement? if (x > 0) if (y > 0) System.out.println("x > 0 and y > 0"); else if (z > 0) System.out.println("x < 0 and z > 0"); a. x > 0 and y > 0; b. x < 0 and z > 0; c. x < 0 and z < 0; d. no output. 3. Suppose isPrime is a boolean variable, which of the following are correct for testing if isPrime is true. a. if (isPrime = true) b. if (isPrime == true) c. if (isPrime) d. if (!isPrime = false) e. if (!isPrime == false) 4. Which of the following are possible output from invoking Math.random()? a. 3.43 b. 0.5 c. 0.0 d. 1.0 5. Suppose you write…arrow_forward21. Consider the following method: public static void sketch(int x1, int y1, int x2, int y2, int n) ( if (n <= 0) O else ( } drawLine(x1, y1, x2, y2); Assume that the screen looks like a Cartesian coordinate system with the origin at the center, and that drawLine connects (x1,y1) to (x2,y2). Assume also that x1, y1, x2, and y2 are never too large or too small to cause errors. Which picture best represents the sketch drawn by the method call int xm (x1 + x2 + y1 - y2) / 2; int ym (y1 + y2 + x2-x1) / 2; sketch(x1, y1, xm, ym, n - 1); sketch (xm, ym, x2, y2, n - 1); sketch(a, 0, -a, 0, 2) where a is a positive integer? (A) <-a y -a y a X (B) (D) -a y + -a -a aarrow_forwardProblem specification: There is a grid of NXN squares. We can easily determines how many different rectangles (squares are excluded) there are in the grid. For example, in a 3X3 grid, you can find 22 different rectangles, marked as the green rectangles. You can see that we did not count the red ones as they are squares. In this assignment, you will write a Java program that takes the value of N as input and determines the total area of all the rectangles in the grid. Assume that the smallest squares in the grid have length 1. So a 3X2 rectangle will have an area of 6. For example, the total area of all the rectangles in the 3X3 grid is 66.…arrow_forward
- (language: Intellij-Java) Part One: Create a method which takes two int parameters and swaps them. Print the values before and after swapping. (Example: ‘before swap: x = 5, y = 10; after swap: x=10, y=5). Part2: Write a method which gets a value from the user and convert that value from Celsius to Fahrenheit: - For Celsius to Fahrenheit conversion use: F = 9*C/5 + 32 - Print the result of the conversion Part3: Create a method which takes an integer array input from the user and reverses the elements in the array. Print the reversed array. - For example, the expected “reversed” result for an array [5,33,0,8,2] is [2,8,0,33,5] - Don't use any inbuilt/existing array reverse method. Try to write the reversing logicarrow_forward42) Look at the following method: public static int test2 (int x, int y) if (x < y) { return -5; } else { return (test2 (x - y, y + 5) + 6) ; } } What is returned for test2 (10, 20)? A) -5 B) 1 C) 6 D) 10 43) This term is used for methods that directly call themselves. A) Simple recursion C) Absolute recursion B) Direct recursion D) Native recursion 44) If the base case in a recursive method is never reached: A) The result will always be off by one. C) The method will call itself indefinitely. B) The method will call itself only once. D) The method will never call itself. 45) A(n) is an object that is generated in memory as the result of an error or an unexpected event. A) exception C) default exception handler B) exception handler D) error message 46) All of the exceptions that you will handle are instances of classes that extend this class. A) Exception C) IOException B) RunTimeException D) Error 47) All exceptions are instances of dasses that extend this class. A) Throwable C)…arrow_forward(Number of days in a year) Write a method that returns the number of days in a year using the following header: public static int numberOfDaysInAYear(int year)Write a test program that displays the number of days in year from 2000 to 2020.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Database System ConceptsComputer ScienceISBN:9780078022159Author:Abraham Silberschatz Professor, Henry F. Korth, S. SudarshanPublisher:McGraw-Hill Education
Starting Out with Python (4th Edition)Computer ScienceISBN:9780134444321Author:Tony GaddisPublisher:PEARSON
Digital Fundamentals (11th Edition)Computer ScienceISBN:9780132737968Author:Thomas L. FloydPublisher:PEARSON
C How to Program (8th Edition)Computer ScienceISBN:9780133976892Author:Paul J. Deitel, Harvey DeitelPublisher:PEARSON
Database Systems: Design, Implementation, & Manag...Computer ScienceISBN:9781337627900Author:Carlos Coronel, Steven MorrisPublisher:Cengage Learning
Programmable Logic ControllersComputer ScienceISBN:9780073373843Author:Frank D. PetruzellaPublisher:McGraw-Hill Education
Database System Concepts
Computer Science
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:McGraw-Hill Education
Starting Out with Python (4th Edition)
Computer Science
ISBN:9780134444321
Author:Tony Gaddis
Publisher:PEARSON
Digital Fundamentals (11th Edition)
Computer Science
ISBN:9780132737968
Author:Thomas L. Floyd
Publisher:PEARSON
C How to Program (8th Edition)
Computer Science
ISBN:9780133976892
Author:Paul J. Deitel, Harvey Deitel
Publisher:PEARSON
Database Systems: Design, Implementation, & Manag...
Computer Science
ISBN:9781337627900
Author:Carlos Coronel, Steven Morris
Publisher:Cengage Learning
Programmable Logic Controllers
Computer Science
ISBN:9780073373843
Author:Frank D. Petruzella
Publisher:McGraw-Hill Education
Program to find HCF & LCM of two numbers in C | #6 Coding Bytes; Author: FACE Prep;https://www.youtube.com/watch?v=mZA3cdalYN4;License: Standard YouTube License, CC-BY