Command To Wait For User Input

Apr 28, 2014

I am new to Java but not to programming, and I wonder what command there is available in Java to put a pause in the program sequence, for instance when you display "press any key to continue... "?

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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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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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Tell Java Method To Wait One Second?

Jul 4, 2014

I want to tell my java method to wait one second while something else is happening. Why not use Thread.sleep(x)? For me it stops the whole program and does not let that some else happen. Why not use wait(x)? It crashes. I tried using timers, but that doesn't solve the problem... Isn't there a simple "Java please wait 1 sec for him to catch up"?

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Method To Wait On Different Swing Window?

Dec 20, 2014

I am trying to create a gambling POS system and having problems with a method trying to get a value right after it was set. A jbutton sets another jframe visible which contains buttons. Upon action of the button, a value is set and the jframe is disposed.

private void btnPrizeActionPerformed(java.awt.event.ActionEvent evt) {
PrizeSelling prize = new PrizeSelling();
prize.setVisible(true);//create prize selection window
bin = getButton(); //gets what button is selected to load the correct prizes for correct game
prize.DBconnect(bin);//sends bin number to prize loading method

[Code] ....

As soon as btnPrize is clicked it gets the total value of the prizes selected which of course is 0 because it is ran before it is set. How can I make it wait until the window is closed before continuing?

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Two Different Buttons - Wait And Resume Function

May 5, 2014

i have two different buttons. when i clicked first, the picture is shown and then when clicked second button it shown picture and both of will be closed. but i cant see second picture because immediately second button will be closed. how can i stopped second button for a 3 seconds fpr example?

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Wait For External Application To Close

Jun 16, 2014

I am writing a console application that is to make use of the system editor on *NIX. For that I have written a method which writes a string to a file, launches an editor to change that file, and then reads the file again. The problem is the call to run the editor doesn't wait for that application to have closed.

Java Code: Runtime.getRuntime().exec(editorcmd + " " + tmpfn); mh_sh_highlight_all('java'); I need the program to wait for the editor to have finished.

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Why Command Prompt Does Not Recognize Java As A Command

Jul 22, 2014

I am trying to execute a program from the command prompt. I type java -jar zuul.jar (zuul is the name of my project) and I get a message that java is not recognized as an internal or external command. What do I do wrong?

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Swing/AWT/SWT :: What Makes Java Wait On JFrame

Mar 8, 2014

With a simple "Hello World" application, once the println is executed the application exits and the process goes away.

If a simple Frame application is executed, the Frame is displayed, the println is executed but the application does not exit.

public class Frame3 extends JFrame
{
Frame3() {
setBounds(100,100,300,100);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setVisible(true);
}
public static void main(String args[]) {
new Frame3();
System.out.println("You are here");
}
}

It isn't that Java is aware an object exists because if I create a basic non-swing, non-gui object it will exit right after the println.

Q1. What is it that causes Java NOT to exit after creating the JFrame?
Q2. What type of object(s) when created will cause the application to continue running?
Q3. What would I do if I wanted the println statement to be executed only after the JFrame was closed?

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How Wait And Notify Works In Multithread Environment

Aug 26, 2014

Flow of this program?

public class ThreadA {
public static void main(String [] args) {
ThreadB b = new ThreadB();
b.start();
synchronized(b) {

[Code] ...

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Swing/AWT/SWT :: Wait For Mouse Click Before Running While Loop

Oct 7, 2013

I've got the game working just fine, but I don't like the way it starts playing the second you hit the "Run Last Class" button in Eclipse, and would really like to have the game start, then wait for the user to click a button before running the core WHILE loop. Everything is implemented in a single class, and here is the playGame method that starts the ball moving:

private void playGame(){
while (!gameover){
moveBall();
checkForCollisions();
}

All I want to do is pause before the WHILE loop until the users clicks the mouse button, nothing fancier than that! I've done quite a bit of reading, and it looks like ActionEvent may be the way to go, but I'm not clear on how to use it correctly in this scenario.

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How To Send Command To Command Line

Jun 19, 2014

I simply cannot understand and find how to send a command to Command Line from Java.OK I can Open DOS:

1. Process p=Runtime.getRuntime().exec("cmd /c start");

2. Now How to "cd C:" + Enter ?

3. send another command "mvn clean install" + Enter

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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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