How To Save User Input

Jan 28, 2015

I have a program that asks you for your password and if it is incorrect it reduces your attempts until you are at zero, but I want to be able to tell the user what passwords they have attempted when they run out of attempts. I've tried a couple of things but how to get it to work. This is my code:

import javax.swing.JOptionPane;
public class PasswordV4 { //Begin Class
public static void main(String[] args) { //Begin main program
//initialize variable
int passwordAttempt = 5;
int value = 0;

[Code] ....

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Java Servlet :: How To Force Browser To Open / Save / Save As File From Server

Sep 25, 2012

How to force browser to open/save/save as the file from server instead of browser cache.

I am creating a csv file through a pl/sql procedure and forwarding the link to user once user clicks on link he downloads the file, however if the same thing is repeated then browser returns the old cached file instead of new file generated on server.

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Java Program That Will Ask A User To Input Grades Until User Inputs Sentinel Value

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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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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Read Text File Into Array Ask User To Save File And Print Data

Jul 14, 2014

New to programming. Am supposed to create a program that reads a text file (of integers) and computes a series of computations on these integers. I don't have the code for the integers in my code yet, (i know how to do those), but am struggling getting the array to simply print in the print writer. I have the user select a text file, read the file with a scanner, and then save the computations done from my code into another file. specifically, the problem is as follows: Write a program that uses a file chooser dialog to select a file containing some integers. The file contains an integer N followed by N integers. The program then uses a file chooser dialog to let the user specify the name and location of an output file to write results to.The data written to the output file will be as follows

(1) The original list of N numbers from the input file,
(2) The original list of N numbers printed in reverse order of how they appear
in the input file.
(3) The sum and average of these numbers,
(4) The minimum of all the numbers,
(5) The maximum of all the numbers.

[import java.io.File;
import java.io.IOException;
import java.io.PrintWriter;
import java.io.Writer;

[Code]....

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Create New File / Ask User To Write In It And Save Final Print Content Of File

Mar 15, 2014

1. creates a file.
2. ask user to write into that file
3. save the file
4. print content of file.

Is my current exercise, so far i have gotten the code to create a file. What should i use to ask user to write into that file and save?

package assignment7;
 
import java.io.*;
public class Exercise2
{
public static void main ( String [ ] args ) {
String filePath="newfile.txt";
File newFile = new File ( filePath ) ;

[Code] .....

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Create New File / Ask User To Write In It / Save Finally Print Content Of File

Mar 17, 2014

1. creates a file.

2. ask user to write into that file

3. save the file

4. print content of file.

is my current exercise.so far i have gotten the code to create a file, and ask the user to input their age.what should i use to save what the user writes into the file?

Java Code:

package assignment7;
import java.io.*;
import java.util.*;
public class Exercise2
{
public static void main ( String [ ] args ) throws IOException
{
Scanner scan = new Scanner(System.in);

[code]....

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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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How To Get User Input

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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Asking User For Input Twice?

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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Can Control User Input

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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Formatting User Input

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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ArrayList - Get User Input And Sum Together

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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Get User Input For A Char Value?

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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Simple Input Value From User

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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Getting User Input Second Time

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
System.out.print("How much money would you like to change? ");
int chips = keys.nextInt();
System.out.println("You now have $" + chips + " in chips.");

[code]...

This is what I get when I run it run/How much money would you like to change?

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2D Array Input User For GUI

Mar 25, 2014

Java Code:

import javax.swing.*;
import javax.swing.table.*;
import java.awt.*;
public class SortTable {
public static void main(String args[]) {
Runnable runner = new Runnable() {
public void run() {

[Code]...

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How To Get User Keyboard Input

Sep 4, 2014

I created a scanner object but it's not asking for any input. when I create a new scanner and then tell it to print it it just prints a bunch of weirdness when AFIK it should be asking me to type something and then it should repeat what i entered.

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Using Wildcards With User Input

May 26, 2014

I have a mysql database and I want to be able to search through a table for a key word in a column like:

words

my fat cat

the yellow canary

what blue cow

and if i put in the full string like "what blue cow" if finds a match, but I want to be able to put in "blue" and see if it finds a match

Java Code:

String keyword = t3.getText();
String sql1;
sql1= "SELECT * FROM table WHERE words ='"+keyword+"'";
rs = stmt.executeQuery(sql1);

while(rs.next()){

JOptionPane.showMessageDialog(null, "found match");
} mh_sh_highlight_all('java');

Im not sure how to do this using wild cards with user input (a JTextfield)

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Get A String From User Input?

Apr 13, 2014

I trying to get this code to get user input instead of reading from a hardcoded array. I'm getting compile errors while trying to get user input. Here's some of the code:

Java Code: // BubbleSort Java
// compile with: javac BubbleSort.java
// run with: java BubbleSort

[Code]....

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Value Will Multiply By User Input

Apr 14, 2014

I would like to multiply the amount stated inside program by user input. I currently have

public static void setTicket(double ticket)
{
//if statement for tickets
if (ticket == 1)
Ticket = 10.00;
else if (ticket == 2)
Ticket = 20.00;
else if ( ticket == 3)
Ticket = 30.00;

The user should enter 2 and the value should show 20.00. This does work however im looking for a way to say enter 2 = 2*10 instead of stating each value individually.

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How To Take User Input As Integers

Jun 2, 2009

Suppose I write a program to multiply two numbers.

The user enters the numbers as follows:

2
3

How do I extract these integers inside main? [Explain the case where the integers are on two separate lines].

What to do for the newline inbetween?

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If Statements And User Input

Dec 12, 2014

I am new to java and I am trying to write a program where someone has to guess the number. The correct number is 3. If they are below three. It tells them that they are too low and to guess again. If they are too high, it tells them they are too high and to guess again.

However, I am having problems once they enter a number and they get the response "The number was too low. Try again" as it lets them try again but doesn't tell them if it's right, wrong, or too high. I'm not sure what piece of code I am missing. Here is what I have so far:

import java.util.Scanner;
public class Guessthenumber {
public static void main(String[] args) {
Scanner input = new Scanner(System.in);
System.out.println("Enter a number between 1-10.");
double value = input.nextDouble();
if(value == 3)

[Code] .....

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How To Just Read User Input

Sep 29, 2014

i need to output the unsorted array as well as the sorted array...the sorted array works but i can not get the unsorted array to work.

package Lab7;
import java.util.Scanner;
public class lab10 {
/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
Scanner keyboard = new Scanner(System.in);

[Code]...

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Validating User Input

Oct 16, 2014

My project is a program that uses methods to display strings in a variety of different ways. I already have all of that working, my problem is checking for user inputs.For example on the menu portion of my program i ONLY want the user to input 1-5.here is the method i developed for checking user input IT DOES CONTAIN ERRORS this is where i am having troubles.

public static int checkInput(String prompt, int lowerBound, int upperBound) {
int input = 0;
boolean done = false;
while ( !done )
{
System.out.println(prompt);
if (input.hasNextInt())

[code]....

here is the rest of my program which is working fine besides the checking input. i would like to implement this method for checking inputs into all places where the user is asked to input something.

import java.util.Scanner;
public class DisplayingStrings {
public static void main(String[] args) {
Scanner input = new Scanner(System.in);
int getNum = checkInput("Enter #(1-5)", 1, 5);
System.out.println("--String Writer--");
System.out.print("Enter a string: ");
String word = input.next();
displayMenu(word);

[code]....

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Get User Input From JTextField And Set It To JTable

Sep 13, 2014

I need to get users input from jtextfield and set it to JTable. This is my code:

public class Projektni extends JFrame {
public final JTextField ime = new JTextField(10);
public final JTextField prezime = new JTextField(10);
public final JTextField index = new JTextField(10);
public DefaultListModel podaci = new DefaultListModel();
JButton imeB=new JButton("Upisi u tabelu");

[Code] ....

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