Making A Loop Go A Certain Amount Of Times?

Jun 14, 2014

I am having is not being able to print out the diamond the amount of times the user enters (for example, when it asks how many diamonds, I enter a 2 and only one diamond comes out.)

import java.util.Scanner;
public class Pattern5
{
public static void main(String[] args)
{
// For this pattern program, ask the user how many diamonds
// she would like to print to the screen. The following pattern is one diamond.

[code]...

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How To Get A Program To Repeat X Amount Of Times Automatically

Oct 27, 2014

Ii am trying run a do while loop on java a specific amount of times for example if i were to type in "Enter number of years" and enter 4. i need the loop to execute 4 times or if i said 6 times then i would be 6. the program i have repeats it and takes it back to reentering "Enter number of years" i need it to execute by its self x amount of times. here is what i have so far

System.out.println("Enter the number of years: ");
years = keyboard.nextInt();
rainfall = generator.nextInt(10) + 1;
System.out.println("Year " + "rainfall amounts were");;
for (int months = 1; months <= 12; months++)

[Code]...

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Multiply Two Numbers - Add X Number Y Amount Of Times

Jun 9, 2014

I am trying to make a program to multiplies two numbers without using the "*" operator. My idea was to add x number y amount of times, which is the same as multiplication. I did this with a for loop, but zero is always returned as the answer. How can I fix this?

public class secondMult {
public static void main(String[] args){
System.out.println(multWithSum(4,5));
}
public static int multWithSum(int x, int y){
int sum = 0;
for(int i = 0; i==y;i++){
sum = sum + x;
}
return sum;
}
}

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Naming Objects Depending Of Times A Loop Have Gone

Oct 4, 2014

I know the normal way of naming objects is

Pipe pipe1 = new Pipe

but I want the objects to be made inside a loop and named after how many times the loop have been gone through so I tried

Pipe pipe(numberOfTimes) = new Pipe

where numberOfTimes was a variable counting the loops. This is not working.I need the naming to be pipe1, pipe2, pipe3 etc depending on how many times the loop have been pased

Scanner keyboard = new Scanner (System.in);
String morePipes = ("yes");
int dimRor;
int numberOfPipes = -1;

[code]....

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Java Statement Getting Executed Multiple Times Outside For / While Loop

Aug 14, 2014

I am trying to execute the following method: This method takes a delivery date as one of the arguments and a list of calendar holidays as another argument. If the delivery date is present in the holiday list, I will add 1 day more to the delivery date and check again if the new delivery date is part of holiday list.

Issue is that the last 3 statements before 'return' are getting executed multiple times though there is no for or while loop. Why they are getting invoked multiple times.

@SuppressWarnings("rawtypes")
private String fetchNextWorkingDay(String sDeliveryDate, Element eleCalendarDayExceptions, SimpleDateFormat sdf, Format formatter) throws Exception {
System.out.println("");
System.out.println("Inside fetchNextWorkingDay method");
System.out.println("Del Date to compare is "+sDeliveryDate);
Boolean isDateSet = true;

[Code] .....

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Making Custom Checkerboard With Nested Loop

Feb 7, 2014

I'm trying to make a custom checkboard with given user input, in the form of (# of rows, # of columns, size of each square, filler character).

So the input 2 3 5 * would look like

*****.........*****
*****.........*****
*****.........*****
*****.........*****
*****.........*****
.........*****
.........*****
.........*****
.........*****
.........*****

I've made my loop, but I am unable to get more then a 1 1 1 checkerboard properly. I am stuck on how to divide the filler characters to make the proper square size. As of now they are all one lined.

import java.util.*;
 public class Checker{
 public static void main(String[] args) {
int col, row, size; char filler;
System.out.println("Please enter 3 numbers and a character."); //output

[Code] ..........

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Swing/AWT/SWT :: Call Repaint 200 Times In Loop And It Only Calls PaintComponent Once?

Dec 2, 2014

I have been baffled by the functioning of repaint() - and the SwingPaintDemo3 with the moving square seems mysterious - you call repaint(x,y,w,h) twice and the first time it clears the clip area and the 2nd time it paints the red box. The code in paintComponent tells it to paint the box both times, yet somehow it ignores the initial box and only paints the 2nd one.

I've been writing code to bounce some balls in a box to try and understand the behavior. I set up an array of ball objects, loop through them, move them adjusting for collisions with walls and each other, then repaint(). I call repaint x2 for each ball, just like in the example. In my paintComponenet code, if I try to just paint the current ball only one ball will move, even if I send a different ball object each time. The only way to get all the balls to show up is to put a loop in paintComponenet that goes through all 100 balls every time I call it. I was worried that to move 100 balls I was painting 100x100 times.

So I put some System.out.println commands in my ball move loop, inside my object ball draw commands, and inside the paint component.

private void calculateMoveBall(BoxBalls oneBall) {
System.out.printf("
Entering calculateMoveBall [%1$2d]
",

[Code].....

So even though I called repaint() 200 times (twice for each ball), repaint was actually only called once, drew all the balls at once, and then went back. And I just noticed it appears to have waited until I exited the calculateMoveBall loop to go into paintComponent! The spooky things is how does it know to do that? Does the Java machine 'see' that it is inside of a loop, and perhaps also sees the loop inside of paintComponent, and somehow correctly guesses that it doesn't have to do it 200 times, but can wait and do it once? If I attempt to do the same thing in code, take the loop out of paintComponent() and call repaint() with the current ball, expecting the machine to do exactly what I tell it, it refuses and does it's own thing, waiting to call paintComponent on the 100th ball, drawing only the last ball (so I guess the loop inside paintComponent is not in the logic).

So a call to repaint() is a request for a higher being to decide if it has the time or energy to repaint the clip. If not, it ignores the call, or stacks them up for later (maybe I should try a million and see if it has room for that!) - well so far up to 4000 it behaves the same. This is useful if you are happy with "this is how it works so use it that way". However I really don't like having some kind of hidden logic that I have to trust to work the right way. If I don't want it to wait until later I'm not sure what to do. And I don't trust the machine to do whatever whenever. How do you debug that???

Questions: Is there documentation to know what repaint() will do or how it decides when to call paintComponent? The Swing tutorial gives the example but not the why. "By now you know that the paintComponent method is where all of your painting code should be placed. It is true that this method will be invoked when it is time to paint" "An important point worth noting is that although we have invoked repaint twice in a row in the same event handler, Swing is smart enough to take that information and repaint those sections of the screen all in one single paint operation. In other words, Swing will not repaint the component twice in a row, even if that is what the code appears to be doing." (What the code appears to be doing - now we have to guess what it is doing)

Is there a way to force repaint() to call paintComponent on a clip rectangle (not just on the whole thing?) I would think invalidate() would force repainting of the whole componenet.

Perhaps this is when you draw to a bitmap in memory and paint the whole thing on the screen...

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How To Return Value (amount) In 10 Years

Mar 14, 2014

Here's the small project... but how can I return the value (amount) in 10 years ? The way I did, the program just doesnt return anything...

import java.util.Scanner;
public class FutureValue
{
public static void main (String []args) {
double amount = 0;
double apr = 0;
System.out.println("How much money would you like to invest?");

[Code] ....

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JSP :: How To Display Amount In Indian Format

Apr 30, 2014

i want to display a amount in indian currency format,

i.e=10000000=this iwant show is=1,00,00,000 rather than 10,000,000

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Show Amount Of Number According To Its Interval

Jul 4, 2014

I am trying to make a program that get input value 1-200 from user. However I would like to make the program to show warning if the input number is not within the range of 1-200. In the end I would like to show the amount of number according to its interval (i.e less 50, 51-100 and so on) ....

import java.util.Scanner;
class test {
public static void main (String[] args) {
int number[]= new int[5];
int number2[]= new int[5];
int a=0,b=0,c=0,d=0,i=0;

[Code] .....

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Calculate Quantity / Price And Total Amount

Apr 10, 2015

How to calculate the qty and price and total of the amount in total column.

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JSF :: When Submit Html Form / Value Of Amount Does Not Appear In Second Page

Mar 24, 2014

i have this code
////////////////////////////////////////////
<form name="myform" action="http://localhost:8080/EASYPAY.COM/faces/newxhtml.xhtml"method="post">
amount
<input type="text" name="amount"value="">
<input type="submit" >
</form>

[code]...

when i submit the html form the value of amount does not appear in the second jsf page new.xhtml what might be the problem

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Perform Action Only If Certain Amount Of Time Has Passed

Sep 18, 2014

public static void main(String[] args) {
boolean t=false;
long cuTime = System.currentTimeMillis()
while(t==false) {
System.out.println(cuTime);
long g=cuTime+2000;

[Code] ....

I tried this and it includes a while loop as the whole program has to wait until this while loop executes. So the entire program slows down. Is there any way to do this without a while loop

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How To Perform Action Only If Certain Amount Of Time Passed

Sep 18, 2014

public static void main(String[] args) {
boolean t=false; 
long cuTime = System.currentTimeMillis();
while(t==false) {
System.out.println(cuTime);
long g=cuTime+2000;

[Code] ....

I tried this and it includes a while loop. therefor the whole program has to wait until this while loop executes. So the entire program slows down. Is there any way to do this without a while loop...

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How To Perform Action Only If Certain Amount Of Time Has Passed

Sep 18, 2014

public static void main(String[] args)
{
boolean t=false;
long cuTime = System.currentTimeMillis();
while(t==false)
{
System.out.println(cuTime);

[code].....

I tried this and it includes a while loop as the whole program has to wait until this while loop executes. So the entire program slows down. Is there any way to do this without a while loop

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Show Up Amount For Multiple Photo Books

Oct 9, 2014

import java.util.Scanner;
public class LM6Assignment
{
public static void main(String[] args)
{
Scanner inputDevice = new Scanner(System.in);
int numBooks = 0;
double onePhotoBook = 10.99;//each book cost 10.99
double costof1Book;
//mehtod calls
costof1Book = computeBill(onePhotoBook);

[Code] ....

How to code it so I can put in how many books they need and for it to show up with the amount for multiple photo books..

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How To Display Amount Paid By User And Show Balance

May 3, 2015

I've four classes object. I don't know how to display the amount paid by the user, and show the balance. The calculate button just show the total amount. Do I have to create another object class? And I've to show the bills too.

This is my 1st Frame

import javax.swing.*;
import java.awt.*;
//titlepanel class displays a title in a panel
public class TitlePanel extends JPanel {
public TitlePanel() {
JLabel title = new JLabel();

[Code] .....

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Get Character Count And Amount Of Vowels In String Array?

Jan 29, 2015

I have to write some code to take names from the user and then order them in alphabetical order and then print them out which i have managed to do. However, i can't get it to count the characters in the names that the user enters or count the amount of vowels in the names.

This is the code ive written:

import javax.swing.JOptionPane;
import java.util.Arrays;
String[] names = new String[9];
int i;
names[0] = JOptionPane.showInputDialog("Please enter a name");
names[1] = JOptionPane.showInputDialog("Please enter a name");

[code]....

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Array With Occurrences - Gather Sales Amount For The Week

May 3, 2014

Here is what I'm trying to do using arrays.

gather sales amount for the week
display the total of sales
display the average of sale
display the highest sale amount
display the lowest sale amount

using occurrences determine how many times the amount occurred for the week

make a sales main
make a sales data

This is what i have so far but I'm confused on how to start the occurrence and where it would be placed in order to get the information from the array

public class SalesData {
private double[] sales; // The sales data
/**
The constructor copies the elements in an array to the sales array.
@param s The array to copy.
*/
public SalesData(double[] s) {

[Code] .....

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Specify How To Delete Only Certain Amount Of Objects On Screen In Graphics Window

Oct 10, 2014

I have a question about how to delete only a certain amount of objects on screen in a graphics window. I have a method that will enable me to get rid of every object of the same type off screen, for example this method:

Java Code:

public void deleteTrees() {
//clears all tree trunks and leaves
for (Iterator<GRect> it = historyT.iterator(); it.hasNext();) {
GObject gobj = it.next();
this.remove(gobj);

[Code] ....

That Will delete all trees.

Now In my main method I populate the screen with trees by doing this

Java Code:

for (int xpos = 10; xpos < getWidth() - 40; xpos += getWidth() / 8) {
drawTree(150, 200, xpos, getHeight() / 2.0 - 50);
historyT.add(trunk);
historyL.add(leave);

} mh_sh_highlight_all('java');

My question is how to specify only deleting x amount of trees instead of the whole thing. I pretty sure I need to use something like history.remove(trunk) and to iterate through the amount of trees specified, but not sure how to implement that.

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Transferring Amount To Other Account - Number Format Exception

Apr 7, 2014

I'm doing this project in JSP.net, with html. and in one of the web pages, what I'm doing is that, a person is transferring an amount to someone else, and if the transfer amount is more than the account balance, then he cannot transfer. else, save details in a table.

Here's the code I've used

<%
String t1=request.getParameter("text1");
String t2=request.getParameter("text2");
java.util.Date date1 = new java.util.Date();
SimpleDateFormat ft = new SimpleDateFormat ("dd/MM/yyyy");
int tamt = Integer.parseInt(t2);
int bamt = 0;

[Code] .....

But when i enter the fields and click the submit button in the form, to save it in the table, i get the error:

"org.apache.jasper.JasperException: java.lang.NumberFormatException: null"

(I've attached a screen shot of the error) : NumberFormatException.bmp (750.98K)

What does this mean? how do i find the line in the code that has the error?

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Amount Of Money - Compile Error / Unreachable Statement

Feb 14, 2014

This method accepts 1 integer, amount (the amount of money). Output the minimum number of in quarters, dimes, nickels and pennies used to make up the amount. For example, an amount of 32 would require 1 quarter, 1 nickel and 2 pennies.

This is the question^

My codes are:

public static int change (int amount) {
int quarters = amount / 25 ;
int firstresult = amount % 25 ;
return quarters ;
int nickel = firstresult / 5 ;

[Code] .....

The codes were working when i used System.out.println instead of return, but our teacher required us to use return (functions).

I get the compile error: Unreachable statement.

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Program That Prompts The User To Enter Loan Amount And Years

Oct 21, 2014

so I had to make a program that prompts the user to enter a loan amount and the years for the loan and I have the conversions and everything my only issue is that when the chart pops up it just looks like a bunch of numbers and its missing the column headers

for example

Interest Rate Monthly Payment Total Payment

import java.util.Scanner; 
public class InterestRate { 
public static void main(String[] args) { 
double monthlypayment = 0; 
double totalpayment = 0; 
Scanner input = new Scanner(System.in);
System.out.println("Enter Loan Amount");

[Code]...

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Calculations / Conversions - Calculate Correct Amount Of Change Due To A Customer

Sep 12, 2014

Here are the instructions to my assignment:

A shopkeeper in Diagon Alley needs you to write a program that will calculate the correct amount of change due to a customer. (In Diagon Alley they use three coins with different values, given below).

1. Prompt the user to input the amount of sale in Galleons, Sickles, and Knuts.

2. Prompt the user to input the amount of money given by the customer in Galleons, Sickles, and Knuts.

3. Create constants that represent:

a. 1 Galleon = 17 Sickles

b. 1 Sickle = 29 Knuts

4. Perform the necessary calculations and conversions to compute the correct change in the least number of coins.

5. create a formatted receipt recording the entire transaction.

Here are what is steps 1 and 2 and 5 but problem with are 3 and 4. I need to create the constants and use proper conversions to give the right amount of change back.

Java Code:

import java.util.Scanner;
public class OperatorFormatting {
public static void main(String[] args) {
Scanner input = new Scanner(System.in);
System.out.println("Welcome to Flourish and Blotts");

[Code] ....

Basically, on steps 3 and 4 which are creating the constants and using the to make the proper conversions to give the customer the proper amount of change Due.

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User Should Be Able To Enter Amount Of Digits Array Should Be Shifted Left

Nov 6, 2014

This is the other code problem I have. The user should be able to enter the amount of digits the array should be shifted left. For example, if the user entered 3 and the array was 1 2 3 4 then it should return 4 1 2 3. here is my code.

public char[] replaced(char[] array, char oldChar, char newChar) {
char myFun[] = new char[array.length];
for (int i = 0; array.length > i; i++) {
myFun[i] = array[i];

[code]....

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Simple Program Giving Negative Result For Amount Of Calculations Done

Mar 5, 2014

Why this extremely simple program seems to be giving me a negative value for amount of calculations done within one minute ( Just using it as a bit of fun to see how different computers in the office perform).

Java Code:

class Benchmark {
public static void main(String[] args) {
long endTime = System.currentTimeMillis() + 60000;
int count = 0;
for (int i = 0; System.currentTimeMillis() < endTime; i++) {
double x = Math.sqrt(System.currentTimeMillis());
count = i;
}
System.out.print(count + " calculations per minute");
}
} mh_sh_highlight_all('java');

I am getting results between -2.1billion and -3.4billion which to me would make sense since they are not the best computers in the world but I would be expecting a positive value?

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