Take Input From User And Calculate Value Of PI Using Formula
Sep 6, 2014
I'm supposed to take an input from the user and calculate the value of pi using this formula: 1/1 - 1/3 + 1/5 - 1/7 etc... so on alternating between minus and plus and denominator increasing by 2 every time. If the user inputs the number 3, then it should print (1/1 - 1/3 + 1/5 - 1/7 + 1/9) *4. The idea here is that the higher the input of the user is, the higher the equation will be close to pi.
This is what i have so far :
import java.util.Scanner;
public class Pi
{
public static void main(String[] args) {
double first = 1/1;
double second = 1/3;
Scanner input = new Scanner(System.in);
System.out.println("Enter a Number to calculate how far you want the formula to perform: ");
double count = input.nextDouble();
}
}
This is literally all i have, i know i need a while loop and an if loop.
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Jan 28, 2014
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import java.util.*;
public class Excercise04_31 {
public static void main(String[] args) {
// TODO Auto-generated method stub
Scanner input = new Scanner(System.in);
[Code] ....
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import java.util.Scanner;
public class Triangle {
public static void main(String[] args){
double a;
double b;
double c;
double s;
double x;
double area;
[Code] ....
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public class PrimeNumber
{
Scanner scan = new Scanner(System.in);
int userNum;
String neg;
public void getUserNum()
[code]...
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You need to remove the old images from the Panel. Probably the easiest way to do this is to create a whole new panel and remove the old one (hint: the remove method of JPanel should come in handy)
You could use an array of JLabels
You will need to create a new JLabel and add each member of the array to the panel
I should be able to scroll to see any images that are off screen
I am having difficultly on to making the array list for JLabel, and getting the Fibonacci sequence to show the pictures of rabbits. Below is my current code.
import java.awt.FlowLayout;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class Rabbit extends JFrame
[Code] ....
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Jul 22, 2014
import java.util.Scanner;
//Calculates the prime #1000.
public class Prime {
public static void main(String[] args) {
Scanner input = new Scanner(System.in);
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[Code]....
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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: ");
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[Code] ....
This is my client file.
class Client{
public static void main(String []args){
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Java Code:
import java.util.Scanner;
public class Factorial {
public static String entryString;
public static char entryChar;
public static Scanner input = new Scanner(System.in);
[Code] ....
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public class FakeGravity{
// Instance variables
private String planet;
private int VelocityDecay;
private double BouncinessFactor;
// default constructor
public FakeGravity(){
[Code] ....
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// Circle Class
public class Circle {
private double rad;
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[Code] .....
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[Code] .....
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import java.util.* ;
import javax.swing.*;
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import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
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This is my code:
import java.util.Scanner;
public class Rectangle {
double length;
double width;
public Rectangle() {
[Code] ...
What have I done??? I have created this program using the few different resources with which I am supplied, but I don't understand the resources.
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Okay I know there is a I/O section and wasnt sure where to post this. I need some insight on how to use file input and output as well ... Here is my program:
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public class ticketsSold
{
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[Code] ....
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import java.util.Scanner;
import static java.lang.Math.*;
public class Lab2 {
public static void main(String[] args) {
Scanner scan = new Scanner(System.in);
[Code] .....
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import java.util.Scanner;
public class computeTax {
public static void main(String[] args) {
Scanner input = new Scanner(System.in);
// prompt for filing status
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[Code] ....
The while loop initiated on line 21 is there so that in case the wrong input is given at the prompt given in line 24, the program outputs "please type the right answer" with the command on line 254 before looping back to line 24 and prompting the user to enter his status number. The program works as long as the input at line 28 is an integer. Not surprisingly if the erroneous input here is not an integer, the program outputs the following error message :
Exception in thread "main" java.util.InputMismatchException
at java.util.Scanner.throwFor(Scanner.java:909)
at java.util.Scanner.next(Scanner.java:1530)
at java.util.Scanner.nextInt(Scanner.java:2160)
at java.util.Scanner.nextInt(Scanner.java:2119)
at computeTax.main(computeTax.java:28
To try to solve this I used the Try / Catch technique with the following version of the code :
import java.util.Scanner;
public class computeTax {
public static void main(String[] args) {
Scanner input = new Scanner(System.in);
// prompt for filing status
System.out.println("enter '0' for single filer,");
[Code] ....
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Java Code:
public class testingFormula {
public static void main(String[] args) {
double lat = 34.01858902;
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[Code] ....
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Here is my code so far:
import java.util;
[highlight=java]
public class hello_world {
public static void main(String[] args) {
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//WHAT DO I PUT HERE????
[code]....
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//Create Scanner object
Scanner keys = new Scanner(System.in);
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[Code]....
*****This is what I get when I run it
run:
How much money would you like to change? 50
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(you can ignore the modifier part)
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import java.util.Scanner;
public class DamageCalc{
public static void main(String[] args){
Scanner s = new Scanner(System.in);
[Code].....
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package javalearning;
import java.util.Scanner;
public class QuadraticFormula {
public static void main(String[] args){
Scanner input = new Scanner(System.in);
System.out.print("Enter value for B: ");
double B = input.nextDouble();
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double A = input.nextDouble();
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[code]....
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Code :
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//Calculating y=LN(E-k) and Initializing the Array
for(int x=0; x<LNValues.length; x++)
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[Code] ....
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