Prompt User To Enter A String
Feb 15, 2015
I am suppose to design a problem the prompts the user to enter a String. Based on the input from the user, have the program prompt with a full description of the playing card entered. Below is a table of the notation and meaning:
Notation Meaning
A Ace
2...10 Card Values
J Jack
Q Queen
K King
D Diamonds
H Hearts
S Spades
C Clubs
Use the .charAt(...) to extract each character from the user's input and build a switch statement to determine the full description.
import java.util.Scanner;
public class PlayingCardIdentifier {
public static void main(String[] args) {
Scanner input = new Scanner(System.in);
System.out.print("Enter a card notation: ");
String s = input.nextLine();
[code]...
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Jun 1, 2014
The exercise sounds like this : Write a program that prompts the user to enter an integer from 1 to 15 and displays a pyramid , as shown in the following sample run (my code displays correctly the first 9 lines):
1
2 1 2
3 2 1 2 3
4 3 2 1 2 3 4
5 4 3 2 1 2 3 4 5
6 5 4 3 2 1 2 3 4 5 6
7 6 5 4 3 2 1 2 3 4 5 6 7
The problem is when i input a number greater then 9 as it requires 2 spaces . I m pritty sure i solved it incorrectly or at lost not optimal as i m using a string that decreases on each line to create the pyramid effect.
import java.util.*;
public class C5_17 {
public static void main(String[] args){
Scanner input = new Scanner(System.in);
System.out.println("Enter the number of lines: ");
[Code] ....
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Oct 31, 2014
My full instructions are to Design a Java interface called Priority that includes two methods and two constants. The methods are setPriority and getPriority. The constants are MIN_PRIORITY with value 1 and MAX_PRIORITY with value 6. The interface should define a way to establish numeric priority among a set of objects. Design and implement a class called Task that represents a task (such as on a to-do list) that implements the Priority interface. Assume that Task has two attributes (instance data): name and priority. Define the Task constructor to accept and initialize the name of the task. Each newly created Task should have priority equal to MIN_PRIORITY (the constructor should initialize priority to MIN_PRIORITY). Priorities can be changed using setPriority method. Create a driver class TaskDriver that should do the following: prompt the user to enter three tasks and their priorities, and then print the tasks in the order of decreasing priorities. If the user enters an invalid priority that is less than MIN_PRIORITY or greater than MAX_PRIORITY, then the user should be asked to enter priority again until a valid priority value is entered.
So far I have:
public interface Priority
{
public void setPriority(int level);
public int getPriority();
[Code].....
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Oct 19, 2014
So I have this program where i have to prompt user to enter a the value of their savings for n number of weeks (quarters dimes nickels pennies) and the program outputs the total of savings an average of saving per week and an estimation of saving per year.
I managed to do the first step but the problem is that when they enter the value of their savings i don't know how to save the value of each(quarters dimes nickels and pennies) to make the calculations? Here is what i have so far
import java.util.Scanner;
public class yearlySavings
{
public static void main(String[] args) {
Scanner kb = new Scanner(System.in);
int numberOfWeeks = 0; // initialize value of numberOfWeeks
[Code] .....
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Nov 25, 2014
I did a problem from my book which is "Write a method that displays an n-by-n matrix. Each element is 0 or 1, which is generate randomly. Write a test program that prompts the user to enter n and displays the n-by-b matrix".
So if a user would enter 3, and output could be 0 1 1
0 1 0
1 0 1
So here's my question... I was able to get the program to work in the way my book describes (by just writing the code in the class with the main), but for practice, I want to learn how to do this OOP-style...
I'm not sure how to do this, though, since the method is a void method, so I can't seem to call it within a toString method.
import java.util.Scanner;
public class MatrixTest {
public static void main(String[] args) {
Scanner input = new Scanner(System.in);
System.out.println("Enter an int");
int number = input.nextInt();
MatrixClass mc = new MatrixClass(number);
[Code] .....
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Oct 8, 2014
Basically I need to make a program prompts the user for an integer, check to make sure the length entered by the user is a power of 2 and at least 2. Then I need to convert from base e to base 2 then I need to print the tick marks of a ruler based of the value of the length.
I got the whole converting thing working and the check for a power of 2, that wasn't an issue because it didn't require any recursion. I just don't know how to print out the proper tick mark values.
The way it is supposed to work is that it needs to look like this. Say the user enters 8;
012131210
012345678
Or if the user enters 16;
01213121412131210
01234567890123456
The bottom row is pretty much just the index value, that I print fine.
The top row though is supposed to be the length of the ticks on a ruler, with the middle most value being the value of the conversion from base e to base 2 from above. I can get that printed and what I get just looks like this.
For 8;
000030000
012345678
For 16;
00000000400000000
01234567890123456
As you can see I can get the middle value and the index values below but I don't know how to use recursion to get the right numbers.
Here's my current code.
import java.util.*;
public class TickMarks {
public static void main (String args[]){
Scanner input = new Scanner(System.in);
boolean looping = true;
while(looping == true){
System.out.print("Please enter a length: ");
[Code]...
Now the methods isPowerOfTwo() and printLength() both work fine. However, I'm not sure how to get the left and right side working.
My thoughts were to split the length in half and get a left and right side. I gave both of them arrays so I can keep track of the values. Now as you've seen above I get all zeros and I know it's because that's the default value in an array, I just don't know how to get the proper values.
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Sep 8, 2014
I am wanting this program to prompt the user to enter a maximum value and a minimum value and the program should in theory generate a random number for the output. Here is my logic:
int maxRange1;
int minRange1;
static int range;
static Random gen;
Then in my mail argument:
gen = new Random();
Scanner input = new Scanner(System.in);
System.out.print("Enter the maximum number: ");
int maxRange1 = input.nextInt();
[Code] ....
I am able to return both the user prompts and get the inputted answer to appear but I am not getting a response for the prompt "The random number is: ".
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Apr 15, 2015
public static void getInput(int [] student, int []test1,int []test2,int []test3,
int [] test4, int [] test5) {
int stuId = 0;
int t1 = 0;
int t2 = 0;
int t3 = 0;
int t4 = 0;
int t5 = 0;
int h = 0;
char answer = '@';
[Code] ....
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Nov 16, 2014
Write a method named diceSum that prompts the user for a desired sum, then repeatedly rolls two six-sided dice until their sum is the desired sum. Here is the expected dialogue with the user:
Desired dice sum: 9
4 and 3 = 7
3 and 5 = 8
5 and 6 = 11
5 and 6 = 11
1 and 5 = 6
6 and 3 = 9
This is my code:
import java.util.Scanner;
import java.util.Random;
public class mod {
public static void main(String[] args) {
diceSum();
[Code] .....
it works for numbers 2 - 4, but any number from 5 - 12 just prints one output, which is not the correct desired sum.
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Mar 3, 2014
I am having a problem with code that I've written, the problem occurs when I try to prompt for user input at the end of the first loop. What happens is the println fires but the prompt never does and it exits the loop.
Java Code:
import java.util.Scanner;
public class Lab3test
{
public static void main( String[] arguments )
{
//Variable declaration
[Code] ....
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Sep 10, 2014
I am still relatively new to java and am working on a lab program. I have already met the requirements and am trying to spice my code up with a loop that prompts the user to say if the program should run again. This is what I have so far:
package lab2;
import java.util.Scanner;
public class OrderedPairTest{
public static void main(String[] args){
boolean retry = true;
while(retry == true){
[code]....
However, it is giving me an error after the user inputs "y" in for the answer to run again. What did I do wrong?
Error code is: Exception in thread "main" java.util.NoSuchElementException: No line found at java.util.Scanner.nextLine(Unknown Source) at lab2.OrderedPairTest.main(OrderedPairTest.java:11)
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Nov 7, 2014
So it is the question: This program implements a simple "decoder ring". It will prompt the user for a message to decode and decode the message based on the following substitution rules:
ABCDEFGHIJKLMNOPQRSTUVWXYZ will map to
ZEBRASCDFGHIJKLMNOPQTUVWXY
abcdefghijklmnopqrstuvwxyz will also map to
ZEBRASCDFGHIJKLMNOPQTUVWXY
any other characters (like space, punctuation, will map to themselves)
so if it sees an 'A' (or an 'a'), it will map to 'Z', etc... All i could think of is this but can't figure out the rest.
import java.util.Scanner;
public class DecoderRing
{
public static void main(String[] args)
{
String1[] = 'A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P','Q','R','S','T','U','V','W','X','Y','Z';
String2[] = 'Z','E','B','R','A','S','C','D','F','G','H','I','J','K','L','M','N','O','P','Q','T','U','V','W','X','Y';
}
}
Not sure, what things are necessary such as switch statements or if and else or for loops and such...
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Feb 11, 2015
I have to create a program that asks a user to enter an amount for rows and an amount for columns. After they input both amounts, they must fill in the matrix with values (values of double data type). After they enter the values, the program is suppose to search the matrix for the element with the highest value. Once it is found, the user will be prompted with the location of the highest value within the array. I got it to work as to where the user inputs the values and he/she will receive a location of an element. However what they receive is incorrect.
For example
"Enter number of rows: 3
Enter number of columns: 4
Enter values: 23.5 6 13 2
1 5 6 3
7 5 9 2"
Once they enter the last value, they will be prompted with
"The highest element is located in 34".
As you can tell, the highest element is located in 01. I think when the user is prompted with the values that they enter for the rows and columns. How can I modify my code as to where it shows the actual location of the highest value?
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Jun 7, 2015
Write a program that prompts the user to input an integer and then outputs both the individual digits of the number and the sum of the digits.
Now I have a code for spacing out the integers, and I have a separate code for adding the digits. But I am not sure how to merge them together. Both of them work independently
Spacing code:
import java.util.*;
public class SumoftheIntegers
{
static Scanner console=new Scanner(System.in);
public static void main(String []args) {
int num1, test, rem;
int counter = 0;
[Code]...
Now the sum of the integers code:
import java.util.Scanner;
public class sum
{
public static void main(String[] args)
{
// Create a Scanner
Scanner input = new Scanner(System.in);
// Enter amount
System.out.print("Enter an integer: ");
int integer = input.nextInt();
[Code]...
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Apr 13, 2014
Write a program that prompts the user for an input number and checks to see if that input number is greater than zero. If the input number is greater than 0, the program does a multiplication of all the numbers up to the input number starting with the input number. For example if the user inputs the number 9, then the program displays the following sum:
9 * 8 * 7 * 6 * 5 * 4 * 3 * 2 * 1 = 362880
That's the question I'm getting and so far all I've got is
import java.util.Scanner;
public class Lab4Q3
{
public static void main (String[] args)
{
int keyboard;
[Code] .....
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Jan 21, 2015
This program simply adds integers to an ArrayList and then prompt the user if they would like to delete specific numbers that they don't want.
The output that I get when I want to delete numbers like 2 and 4 from 1 2 3 4 5 is 1 2 3 4 5 instead of 1 3 5.
Java Code:
import java.util.ArrayList;
import java.util.Scanner;
public class AL
{
// A regular array like int arr[] has to have its size declare before run-time and it's not dynamic which mean it can not grow or expand on its own.
static Scanner input = new Scanner(System.in);
// You have to use reference types(Integer, Double, Float); not primitive types(int).
[Code] .....
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Oct 7, 2014
I'm currently taking a Java Programming module in college, the program we are using is jGrasp and I'm currently stuck on one aspect of the language.
I did VB last year and I enjoyed it and got good grades so I'm comfortable with Java in terms of compiling the code correctly and getting it to run with no errors.
But for a project we got yesterday, the user must be able to enter data (e.g. an answer) into jGrasp without using a GUI. This is the case because we won't be dealing with GUIs until next semester.
I'm able to handle the rest of the project, but the part which I can't figure out is how the user can interact with jGrasp without the aid of a GUI.
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Oct 5, 2014
I am learning Java on my own, and I am creating little programs to do so.The program below asks the user to input text and hit enter. When user does that, it asks if that is correct. If the user enters "y," the program ends. That's good.If the users enters "n," the strGrategul is set to empty which triggers the while statement to start over again. That's good. However, when the program asks the user to "Tell me one thing you are grateful for..." it doesn't wait for user input. Instead it skips to "You said ''? Enter 'y' or 'n'" It thinks the user enter an empty line.
public static void main(String[] args) {
String strGrateful = "";
String strGoal = "";
String strContinue = "";
Scanner scn = new Scanner(System.in);
[code]....
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Apr 21, 2014
I'm trying to write a program where the user has the option to enter either an int or double but whatever input I enter just gets cast to a double. Do I even have the right Idea by using if else statements?
import java.util.*;
public class VS
{
public static void main(String[] args) {
Scanner Input = new Scanner(System.in);
System.out.println("Please enter a number");
if (Input.hasNextDouble()) {
[Code] ....
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Oct 13, 2014
so I had to create a program that allows the user to enter a day using a number and then enter a year and after they did that it would create an entire calendar for that year ..so I have that but the only issue is I can not get the numbers to line up neatly.how to do the entire thing in loops, I tried a couple in here..what this would look like as loops instead of switches and cases and if else
import java.util.Scanner;
public class Calendar {
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
[code]....
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Feb 11, 2015
Write a program called ProductCatalog that prompts the user to enter the number of products in the product catalog. The program should then prompt the user for the name and the price of each product in the product catalog. Once all of the products have been entered, the program should output the product information (name and price) of the most expensive product in the catalog. Your solution must use a for loop repetition structure and should use the Product class included in labfiles05.zip to keep track of the product with the highest price. Here is sample output:
Enter the number of products: 3
Enter the name of product 1: iPod
Enter the price of product 1: 158.99Enter the name of product 2: iPad
Enter the price of product 2: 518.99
Enter the name of product 3: iPadMini
Enter the price of product 3: 304.49
Most Expensive: Product [name=iPad, price=518.99]
Your solution should not use an array to keep track of all the product information entered.
I am having trouble with my code, with the For loop and then calling the methods from the Product class into the ProductCatalog. How should I approach this program.
Here is the Product program.
public class Product
{
private String name;
private double price;
public Product(String theName, double thePrice) {
name = theName;
price = thePrice;
[Code]...
Here is the ProductCatalog class where I call the methods from Product class. The For loop is what I am having trouble with as well.
import java.util.Scanner;
public class ProductCatalog
{
public static void main(String[] args) {
double number;
String product = " ";
double productCount = 0;
[Code]...
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Jan 6, 2014
I am trying to get a user to enter an integer (registration number) between 500 and 5000. if it is below 500 and over 5000 the user should get a prompt "invalid number" and "non-numeric character". See my code below. it is not working when i enter invalid numbers.
import java.util.*;
public class Infomation{
public static void main(String args []) {
Scanner in = new Scanner(System.in);
System.out.print("Student Number:");
int sn=in.nextInt();
[Code] ....
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Feb 18, 2014
Create a Java application that prompts the user to enter their personal details: First name, last name, gender, address, suburb, postcode, and phone number. Then the program displays all of your personal details to the screen as illustrated. Name the file PersonDetails.jav
package exe
import java.util.*;
public class Review2 {
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
System.out.print("Enter your full name: ");
String name = scanner.next();
[Code]...
If you cant tell straight away how i have stuffed up, what is happening is this;
When i am promoted to enter my name, 'John Smith'. The word 'John' would be stored in the name variable, while 'Smith' is stored under gender, so the next prompt is then 'Whats your address?'
So its only assigning one word per variable, now as far i understand, a string should not work that way. So where is my mistake?
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May 6, 2014
Create an application that allows a user to enter values for an array of seven Salesperson objects. Offer the user the choice of displaying the objects in order by either ID number or sales value.
import java.util.*;
public class SalesPersonSort
{
public static void main(String args[]) {
int[] id = new int[7];
int[] salesValue = new int[7];
final int END = 999;
[Code] ....
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Sep 2, 2014
I'm using Jgrasp and my prompt is asking me to write a program where the program prompts the user to enter 4 grades between 0 and 100. And you have to display the grades, and the program has to calculate the minimum grade, the maximum grade and the average.I'm just having problems with the max?
// Import Java Scanner.
import java.util.Scanner;
// Name Class.
public class Practice_4_1
[code]...
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Feb 5, 2014
I am starting a program that is dealing with arrays. My issue, allowing a user to enter 'x' number of people into an array. How do I first allow them to enter the size of an array, and then enter strings (list) into that array. In addition to this, I need to specify the number of boxes of cookies sold by each person and keep a tally of the number of people selling cookies in each category (e.g. 1-10, 11-20...etc). Instead of having a number 100000, I want the user to enter that size, 'x'.
import java.util.Scanner;
public class cookie {
public static void main(String[] args) {
Scanner input = new Scanner(System.in);
int x = 100;
double saleCount[] = new double [x];
String[] girlScout = new String[100000];
[code]....
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