Input In Else If Ladder?
Jul 24, 2014
So I'm currently self learning java. Currently I'm trying to write my own code with an else-if ladder to spit out the data on different types of ships. For some reason, when I put in the input, it always puts in my final else statement instead of the other ones. I've ran this code manually inputting a char (in the code the variable is ch) to see if the else-if ladder runs properly, and it does. But for some reason the input isn't running the ladder right.
class Ships {
public static void main (String arg[])
throws java.io.IOException {
char ch;
int length, beam, draft, min, max;
[Code].....
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Nov 12, 2014
I am trying to write a program that will generate a QR Code from an input text and also display some information about the input/output bits. So far I have created the frame and what to do next. And I'm not sure if I am on the right track since my level of programming is not that great. By the way, I am using zxing libraries from GitHub. I know, there are plenty of generators online for the QR Code, but that is not what I am looking for. As you can see on the attached image, I am more interested in the efficiency of encoding 2D data. Also, I noticed that almost all the online projects regarding 2D codes are for Android. Which is not very useful.
// QR Code Generator
package qrcode;
import javax.swing.JFrame;
import javax.swing.JButton;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JTextField;
import javax.swing.border.EtchedBorder;
import javax.swing.border.TitledBorder;
[Code]....
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Jul 14, 2014
So I was going to try to create a program that prompts input and creates a file (That didn't exist before) with that input as name.Then, the program prompts inputs after stating questions such as 1 + 1, then if the user inputs an answer, put "Question # = Correct "or" Wrong.Code SO Far:
Java Code:
import java.io.BufferedReader;
import java.io.File;
import java.io.InputStreamReader;
public class File_Read {
public File_Read() {//File_Read is the Interactive object
[code]....
So that it puts the Correct or Wrong into the file.
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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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Mar 4, 2014
Why do i not get a value 0 when my input is 0.
import java.util.Scanner;
public class Dec2Hex {
public static void main(String[] args){
int dec;
String hexStr = "";
int radix = 16;
[Code] .....
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Nov 13, 2014
I have been coding in my class at school (Grade 11 Computer science) and i just downloaded the program on my computer at home, unfortunately i cannot access my computer notes at home and i also dont remember certian specifics of coding, so my question is how would i get user input to create a program. The comments are the parts i dont remember. (I am trying to slowly build my memory with this stuff)
Here is my code so far:
import java.util;
[highlight=java]
public class hello_world {
public static void main(String[] args) {
string name;
//WHAT DO I PUT HERE????
[code]....
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Oct 14, 2014
I have it so it gives me the sum of any digit, i just cant figure out how to get only the odd digits to add up. for example if I were to type 123. The odd numbers = 4 but using this program i get 6
class SumOfDigits {
public static void main(String args[]) {
int sum = 0;
System.out.println("Enter multi digit number:");
[Code] ....
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Apr 24, 2014
Im trying to get the user to input the rows one by one but my input stops after the first. the examples i looked at in my book had this way i used as well. i are my rows and j are my columns. What is the correct way to do it?
import java.util.Scanner;
public class Exercise08_01 {
public static void main(String[] args) {
[Code]....
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Apr 19, 2014
I'm working on creating a dice game and getting the users input is giving me a really hard time. I have the main game working but this part I'm stuck on. The problem is that it's not giving me the chance to enter the second input when I ask for the game.
//Create Scanner object
Scanner keys = new Scanner(System.in);
//Get chips
[Code]....
*****This is what I get when I run it
run:
How much money would you like to change? 50
You now have $50 in chips.
What game do you want to play? You did not pick dice.
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Jul 24, 2014
I'm trying to get the input of several JComboBoxes and execute a statement depending on which option the user chose for example if destination combo Box = japan duration combo box = 10 days and hotel combox = hotel then print line "welcome" I have tried many options but not getting the desired outcome. at the moment I'm using an if statement with only 2 of 3 of the J combo boxes but it's not working here's my code:
String[] Dest = new String[] {"Select Destination","Crete", "Paris", "Croatia"};
String[] Accomodation = new String[] {"Select your Accomodation","Hotel", "Villa", "Bed in Breakfast","Youth Hostel"};
JComboBox<String> comboDest1 = new JComboBox<String>(Dest);
JComboBox<String> comboAccom1 = new JComboBox<String>(Accomodation);
[code]....
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Oct 24, 2014
I need to write an input validation while using the do-while statement. I feel like most of it is good except that it gets stuck inside the brackets of the do statement. After I enter an input, it just keeps asking me over and over for an input. Then I have to make it s if you enter an input that is out of range, you have to keep entering an input until it is in range.
Java Code:
do
{
System.out.print("Please enter the amount of spaces the letters will shift... ");
shift = uInput.nextInt();
} mh_sh_highlight_all('java'); Java Code: public class ShiftEncoderDecoderDriver
{
public static void main(String[] args)
[code]....
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Nov 5, 2014
I think the problem in this is that the variable max is initialised as 0. Afterwards it remains in the while loop only, so the output is always 0. I dont know how to bring the last max value out of loop and print it.
import java.util.Scanner;
/**
*
* @author
* @version
*/
public class TEST1
[Code].....
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Apr 8, 2015
Here is my code, basically I'll tell you what my program is suppose to do, I want to be able to leave the text box's empty if I like I want to skip 1 or more or all if I like skipping just basically means 0 but getting this error, it's forcing me to type in them all.
Exception in thread "AWT-EventQueue-0" java.lang.NumberFormatException: For input string: ""
at java.lang.NumberFormatException.forInputString(Unk nown Source)
at java.lang.Integer.parseInt(Unknown Source)
at java.lang.Integer.parseInt(Unknown Source)
at StockControl.addToStock(StockControl.java:86)
[Code] .....
My code :
import java.awt.BorderLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JButton;
import javax.swing.JLabel;
import javax.swing.JTextField;
[Code] .....
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Oct 11, 2014
Is there a way you can control user input?
For example, is it possible to only allow the user to enter digits?
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Mar 24, 2015
how I can change my code so that somebody can actually input the specified file path, rather than having it fixed in the code. I previously used
Scanner in = new Scanner(System.in);
System.out.println("What is the filename?");
String input = in.nextLine();
File file = new File(input);
But then the program would not display the frequencies.
import java.io.File;
import java.util.*;
/*
This program will allow the user to enter in a text file name, when prompted the program will anaylser the text and display the frequencies
*/
public class AssP {
public static void main(String[] args ) {
Scanner scan;
try {
Scanner scanner = scan = new Scanner(new File("C:/Users/Mary/workspace/Assingment/src/test.txt"));
[code]....
This is my current code and I need to so the user can load their own files.
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Feb 4, 2014
I have been given a piece of work to do for College that requires me to format user input. For example: This is an example of text that will have straight left and right margins after formatting
will transform into:
This..is..an.example
of..text..that..will
have..straight..left
and...right..margins
after.....formatting
The user inputs the width, in the case above being 20. Each line has to therefore be 20 characters long. All spaces are to be replaced with full stops.
This.is.an.example.o
f.text.that.will.hav
e.straight.left.and.
right.margins.after.
formatting..........
public class Main {
public static void main ( String args[])
[code]....
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Oct 25, 2014
Create a one dimensional array which holds 10 values. Ask the user to input an index value between 0 and 9. Print the value the user selected. Be sure to explain the output to the user. That is my assignment, and here is my code:
import java.util.Scanner;
public class Array {
public static void main(String args[]) {
Scanner sc = new Scanner(System.in);
int a[]= new int[9];
a[0] = 10;
a[1] = 20;
[code]....
I don't know how to use the scanner to get someone's input properly.
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Oct 18, 2014
At the end of my main method, I want it to print out the input given that should have been stored in my sandwich class fields, but it didn't.
import java.util.*;
import java.lang.*;
public class SandwichBuilder {
public static void main(String[] args) {
Scanner inputDevice = new Scanner(System.in);
[Code] .....
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Mar 29, 2014
How To Take 1 Milion's Of Character As A Input
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Jan 12, 2015
I just can't find a way to check if user puts any input or not? The line is Employee Name and I need to validate that he puts something there.
import java.util.Scanner;
public class JavaMartInventorySystem {
public static void main(String[] args) {
String empName;
Scanner keyboard = new Scanner(System.in);
[Code] ....
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Apr 28, 2014
This is my input from my text file: 1|John Jay Smith|1985-01-10|2010-05-10|2014-03-05|212-222-2233..So, I have to convert 1 to integer. Break John Smith into first name as John and Middle name as Jay Last name as Smith.If no middle name is given then first is John and Last is Smith . Read 1985-01-10 as a date value . 2010-05-10 as another date value which could be null. 2014-03-05 as another date value which could be null. and at last 212-222-2233 as phone number.
Scanner sc = new Scanner (inFile);
sc.nextLine();
while (sc.hasNext()){
String row= sc.nextLine();
I want to read this line of input and assign the value accordingly.
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Apr 25, 2014
Write a program that allows the user to enter students names followed by their test scores and outputs the following information(assume that the maximum nmber of students in the class is 50; if the number of students is less than 50, to indicate the end of input data, after entering the last students data, on a line by itself, hold the ctrl key/press z and then press the Enter key):
a) Class average
b) Names of all the students whose test scores are below the class average, with an appropriate message( youre below class average)
c) Highest test score and the names of all the students having the highest score.
Use methods.
Now I wrote the program but i cant figure out how to end the input by pressing ctrl key/press z and then press the Enter key...
Here is my code
import java.util.Scanner;
public class ClassAverage {
public static void main(String args[]) {
String names[] = new String[50];
[code]....
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Nov 14, 2014
I am currently working on a small java programm. I use netbeans for it. And obviously I am new to java.
Basically its a calculator that change the input value into another value: like 10 € into whatever $ and same with Inch and Centimeters.
Therefore I need a second jDialog Form where i can change the factors for the calculator and start the calculator again.
Here is my problem: I can open the second Dialog but if I want to change the factor it doesn't change the value in the variable and the second calculator frame is with the old factors. It seems the double variable isn't working globally
I will add the files later when i find out how?
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Jul 2, 2014
Goal is to get user input and sum together. I've tried it different ways. This is the one with the least amount of problems.
Exception in thread "main" java.lang.RuntimeException: Uncompilable source code - Erroneous sym type: java.lang.Integer.parseInt
ArrayList<Integer> leftCU = new ArrayList<>(); {
System.out.println
("Please enter one at a time the number of CU's for each class that is left to complete. Enter Q when done.");
leftCU.add(in.nextInt());
[Code] .....
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Jan 9, 2015
I am trying to get user input for a char value and am having some difficulty getting input for a char value.
Java Code:
//imports packages
import java.io.*;
import java.text.DecimalFormat;
class ModuleCulminatingTask {
public static void main (String args []) {
//declares variables
float var3, var4;
long var5 = (int)(Math.random()*10);
[code]....
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Apr 10, 2014
I'm not sure what is wrong with my code:
import java.util.Scanner;
public class Main {
int age = 0;
System.out.println("Enter your age: ");
// Read in values
age = in.nextInt();
}
The in is underlined, telling me "cannot find symbol"
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