Accept User Input And Then Print Its Average In A Serial Way

Mar 13, 2015

I want to write a program that accepts user input and then prints its average in a serial way.

Suppose i enter 5. I should get result 5 first time then i input 10 then it should return the average of (5 and 10) and then i enter say 20 it should return average of (5,10 and 20) and so on.

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Floyd Triangle - Accept Line Number From User And Print Only That Particular Line

Sep 10, 2014

Write a program that accepts the line number from the user and prints only that particular line from the Floyd triangle.

Example:
Input: 2
Output: 2 3

Input: 3
Output: 4 5 6

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Program That Takes User Odd Number And Print Prime Numbers Lower Than User Input

Nov 4, 2014

I have been struggling with this program for weeks. This program is supposed to take a user's inputted odd number and then print out all prime numbers lower than that number.

public class PrimeNumber
{
Scanner scan = new Scanner(System.in);
int userNum;
String neg;

public void getUserNum()

[code]...

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How To Change Value In Array Through User Input And Print Out Result

Dec 14, 2014

I have to do a small program about parking. In the 2-d array (parking lot), contains different kinds of cars, the user have to :

1)enter which car he wanna move,
2)what direction (w,a,s,d) and after that,
3) how many moves( not out of bound) he wants to make, and finally
4) we print out the new parking lot for his next move

And i am stuck at how to move the car to corresponding position and then prompt user for the next move?

For example:

I want to move A to the right by 1 (d)

擷取.PNG
print result:
擷取1.PNG

How do I do that? The code that i have right now

public class CarParkGame {
public static void main( String [] args) {
  String carPark[][] = new String [6][6] ;
carPark[0] = new String[] {"A","A","A","0","0","0"};
carPark[1] = new String[] {"b","0","0","0","0","c"};
carPark[2] = new String[] {"b","X","X","0","0","c","<exit>"};

[Code] .....

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Print Maximum And Minimum Values Of Integers From User Input

Apr 27, 2015

So I'm learning java from a website and I was tasked with creating a simple program which allows the user to enter a series of integers, then finally when they decide to input a non-integer the program will print the maximum and minimum values of the integers they entered. So for example if they entered 5, 4, 3 and 2 then enter a non-integer the program would output 5 (maximum value), then 2 on a new line (minimum value).

Here is my code:

import java.util.Scanner;
public class MaxMinPrinter {
public static void main(String[] args) {
Scanner in = new Scanner(System.in);
int max = Integer.MIN_VALUE;
int min = Integer.MAX_VALUE;

[Code] ....

And this is what the output looks like:

Actual output
-------------------------------------------
Enter an integer: 5
- 10
-
- Enter an integer: -4
- 8
- -6
-
- Enter an integer: 11
- -1
-
- Enter an integer: q
- -1
- -6

When it's supposed to look like this:

Expected output
-------------------------------------------
Enter an integer: 5
Enter an integer: 10
Enter an integer: -4
Enter an integer: 8
Enter an integer: -6
Enter an integer: 11
Enter an integer: -1
Enter an integer: q
11
-6

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User Input Student Information - Print Out Name With Grade In Descending Order

Nov 23, 2014

I had to make a program that allowed the user to enter the number of students and the students names and grades and then print out the name with the grade in descending order. right now I only have it where it prints the names out in descending order. how do I get it the print out with the grade?

Here is my code

import java.util.*; 
public class Grades {
public static void main(String[] args) {
Scanner input = new Scanner(System.in);
System.out.print("Enter the number of students: ");
int numofstudents = input.nextInt();

[Code] .....

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User Input 20 Char And Program Will Print Most Common - Exception In Thread Main

Dec 17, 2014

My program is user input 20 char and the program will print the most common. So I use another int arr which count the number appears in the original array. i know its not so Effective but I don't know why it run but it stop in the middle. I got this code :

Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: 20
at Ex2.common(Ex2.java:39)
at Ex2.main(Ex2.java:23)

import java.util.Scanner;
class Ex2 {
public static void main(String[] arg) {
Scanner reader = new Scanner (System.in);
char[] arr=new char[20];
System.out.println("Please enter 20 chars:");
for (int i=0;i<20;i++)

[Code] ....

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JTextField That Accept Only Integer Input?

Jul 5, 2014

I have a GUI with a JTextField. I need to check that the input entered by the user is made up of only integers.

For example I accept: 1, 10, 530, ...

I do not accept: -10, 1.5, -6 ...

I would like to implement this control by using a regular expression so I would have a code like that.

JTextField text = new JTextField();
String input = text.getText();
boolean bool = checkInteger(input);
if(bool)
System.out.println("Ok");
else
System.out.println("Error");

The checkInteger(String input) method should check if the input string is correct or not.

How can I do to implement this control with regular expressions?

Is there an easier way to do it?

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Program Will Only Accept Input From 1 String?

Jan 14, 2015

I am trying to create a fortune teller and everything is running fine except the program does not prompt you to answer the questions

Do you like donuts?
and
What did you have for breakfast?

Here is the code this is in Bluej :

import java.util.Scanner;
public class FortuneTeller {
public static void main(String[] args) {
Scanner keyboard = new Scanner(System.in);
System.out.println("Welcome to Fortune Teller");

[Code] .....

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How To Accept Enter As Empty Input

Nov 8, 2014

How can I get enter(return) as empty input from user?!

scanner.next will wait until I input a string ...

But I want it when I hit return sets the variable to empty string ...

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Accept Integer As Input - Display Even Or Odd

Apr 14, 2014

This program is supposed to accept an integer as an input and display the message that the number is even or odd. The main method calls a Boolean method. Write a method private static boolean iseven(int number and the message is printed from the Main method. This is what I have.

import java.util.Scanner;
public class OddorEven {
int number;
public static void main(String[] args) {
Scanner input = new Scanner(System.in);

[Code] ....

I know the message is not being printed from the Main method. I'm not sure how to do that.

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Program That Accept Input Of Positive Integer And Sum All Digits

Jan 28, 2015

I am attempting to write a program that accepts input of a positive integer, reports each digit and then the sum of all digits. This is what I have so far:

*/
 package numbersum;
import java.util.*; 
public class Week4NumberSum {
static Scanner console = new Scanner(System.in); 
/**
* @param args the command line arguments

[Code]...

It works if I enter 1234567891 (10 digits)
Enter a positive integer: 1234567891
digit: 1
digit: 2
digit: 3
digit: 4
digit: 5
digit: 6
digit: 7
digit: 8
digit: 9
digit: 1

The sum of the digits is 46

But if I enter 11 digits, it fails:

Enter a positive integer: 123456789123 (12)
Exception in thread "main" java.util.InputMismatchException: For input string: "123456789123"
at java.util.Scanner.nextInt(Scanner.java:2123)
at java.util.Scanner.nextInt(Scanner.java:2076)
at week4numbersum.Week4NumberSum.main(Week4NumberSum. java:26)

java - Scanner error with nextInt() - Stack Overflow gives me some infor for InputMismatchException - which I find described as In order to deal with this exception you must verify that the input data of your application meet its specification. When this error is thrown, the format of the input data is incorrect and thus, you must fix it, in order for your application to proceed its execution.

I don't understand why the 10 digit integer is OK but the 11 or > digit integer is a mismatch.

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Print Inputted Data - Name / Score And Average Using Array

Aug 22, 2014

Conditions : Need to print all the inputted data(name,score) and the average.

import java.util.Scanner;
public class Case2 {
public static void main(String[] args) {
Scanner input = new Scanner(System.in);
int[] score = new int[5];
String[] name = new String[5];
int ave = 0;

[Code] .....

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Sum And Average Of Input Numbers

Jan 25, 2014

How to create a simple program that can input number from 1 to n. and display the numbers which input by the user and also display the sum and average of it.

Ex.
Please input a number:
1 2 3 4 5 6 7 8 9 10

the sum numbers of 12345678910 is 55
the average number of 12345678910 is ______,

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Grade Input And Final Average

Sep 15, 2014

For this assignment you will be writing a grade book program. The program will work for one student. It will need to take as input the students name. The user will then be asked to input grades into three categories in this order:

1) homework;
2) quizzes;
3) tests.

The grades in a given category will be averaged to one number that is the average of all grades in that category. The final average will be the weighted average of each category, where homework is worth 25% quizzes are worth 25%, and test are worth 50%. Like this:

Homework Grades: 65, 70, 75, 80, 80 Homework Average: 74
Quiz Grades: 75, 80, 85, 80. Quiz Average: 80
Test Grades: 75, 80, 85, 75 Test Average: 78.75
Final Average = 0.25*HomeworkAvg + 0.25*QuizAvg + 0.50*TestAvg = 77.87

But i only have the average and i dont know how to move past that..

Heres my average code :

import java.util.Scanner;
public class Homework3 {
public static void main(String[] args) {
Scanner myScanner = new Scanner(System.in);
int gradeCount = 0;
int grades = 0;
int holder = 0;

[Code] .....

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Math On Three Numbers - Get Average / Sum And Number Entered By User

Feb 25, 2015

Java program : For this assignment you are going to write code for the following class:

MathOnThreeNumbers

Here are the specifications of class MathOnThreeNumbers:

Methods of class MathOnThreeNumbers:

1. inputThreeNumbers
2. getAverage
3. getSum
4. getNumberOne
5. getNumberTwo
6. getNumberThree

Constructor of class MathOnThreeNumbers

write a constructor that initializes the first, second, and three numbers to 1, 2, and 3 respectively.

Specs for the methods methods:

1.
name: inputThreeNumbers
accessibilty: public
arguments: none
what it does: asks the user for three numbers of type double

2.
name: getAverage
accessibilty: public
arguments: none
what it does: returns average of the three numbers

3.
name: getSum
accessibilty: public
arguments: none
what it does: returns sum of the three numbers

4.
name: getNumberOne
accessibilty: public
arguments: none
what it does: returns the first number entered by the user

5.
name: getNumberTwo
accessibilty: public
arguments: none
what it does: returns the second number entered by the user

6.
name: getNumberThree
accessibilty: public
arguments: none
what it does: returns the third number entered by the user

Here is an example of how the class MathOnThreeNumbers works. The following code produces the output displayed after the code.

MathOnThreeNumbers mm = new MathOnThreeNumbers();
System.out.println("first: " + mm.getNumberOne());
System.out.println("second: " + mm.getNumberTwo());
System.out.println("third: " + mm.getNumberThree());
mm.inputThreeNumbers();

[Code] .....

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Feb 26, 2014

It does not calculate the maximum, minimum or average of the 10 numbers that the user is prompted to input.

My code:

import java.util.Scanner;
public class moretest {
public static void main( String [ ] args ) {
int total = 0;
int number;
int minGrade = 101;

[code]...

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Feb 23, 2014

When input validation for the first months rainfall is non-negative, this results in correct average rainfall.

When input validation is used for the first months rainfall I'm prompted to input a positive number, which is 2.

When asked to input rainfall, in inches, for each month, I begin with input -3, I am again prompted to re-enter a positive, I enter 3. What happens is, whichever positive integer I input after I had entered a negative for the first months rainfall, the average would be off by the positive number inputted.

package averagerainfall;
import java.util.Scanner;
public class AverageRainfall
{
public static void main(String[] args)
{
int maxYears;
int totalMonths;

[Code] ....

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Sep 24, 2014

Using Bluejay. Need code that prompts user to enter 5 test scores and their names. Calculate the average and display.

First initial and last name , 5 test scores, and average

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Apr 9, 2014

Write a java program that will ask a user to input grades until the user inputs the sentinel value -1. The program should test each input to determine whether 0<=grade<=100. If the grade entered is within this range, the program should print "Grade accepted;" if not, the program should print "Invalid input".

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Accept String And Number Of Repetitions As Parameters And Print String Given Number Of Times

Oct 3, 2014

I'm having a hard time with this problem, this is what I have, but I can not use two integers, I have to use one integer and a string...

This is the question:

Write a method called printStrings that accepts a String and a number of repetitions as parameters and prints that String the given number of times. For example, the call:

printStrings("abc", 5);

will print the following output: abcabcabcabcabc

This is what I attempted:

public class printStringsproject {
public static void printStrings(int abc, int number) {
for (int i = 1; i <= number; i++) {
System.out.print("abc");
}
}
public static void main(String[] args) {
printStrings(1, 5);
}
}

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I have created a java gui application and I need to communicate through the serial port. I would like to open the serial port in the beginning of the application and then close it when the applications closes. The problem that I am having is that I created a method to open the serial port in the main function but I can not close the serial port on exit off the application. Is there away of having the serial port be setup so that all methods can access the serial port.

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Where To Input Segment To Get User Input Dialog

Apr 9, 2015

Where do I input this segment?

Scanner user_input = new Scanner( System.in );// This line goes at the top with the other global variables

public void getUserInput(){
System.out.print("Enter litres: ");
litres = user_input.nextDouble( );
System.out.print("Enter mileage: ");
mileage = user_input.nextDouble( );
System.out.print("Enter speed: ");
speed = user_input.nextDouble( );

[Code] ....

This is my client file.

class Client{
public static void main(String []args){
Bike R1=new Bike(5.0, 60.0,30.0);//create bike object with params
Bike R2=new Bike();//without params
System.out.println(R1.increaseSpeed());//calling methods
System.out.println(R1.maxDistance());
System.out.println(R2.increaseSpeed());
System.out.println(R2.maxDistance());
}
}

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Jun 4, 2014

Aim : display a serial number using two thread Say (odd numbers)t1=1,3,5,7....99, and (even no) t2=2,4,6,8......100

How to resolve this problem ?

output will be:
1
2
3
:
100

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Jul 19, 2014

My company is a transport company. We receive goods form partner and transport it to customers. There is a process that we must accept a number of kilograms into bill after we weigh goods by the electronic balance(the electronic balance have serial port plug in PC) . To decrease this process, I'm looking for a project "read serial port wrote in java applet". Who have code,

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Java - Getting Data RFID Serial Rs232 In JFrame Class

Apr 14, 2014

**Getting data on from rfid scanner as Serial rs232 port in JFrame**, in this case I have made a JFrame form and I have a JTextField for storing data rfid as a String. Actually, I found a class from internet that read the RFID reader as byte, now How To get data from my RFID Class to my JTextfield Jframe in my main class as String?

Here my RFID class :

package view;
import java.util.*;
import java.io.*;
import javax.comm.*;
public class ListPorts implements Runnable, SerialPortEventListener {
static CommPortIdentifier portId;
static Enumeration portList;

[Code] ....

Is it possible that my RFID class merge with my Main class ?

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