import java.util.*;
public class TestArithmetic {
public static void main(String [] args) {
Scanner console = new Scanner (System.in);
System.out.println("Enter First Number");
int x1 = console.nextInt();
System.out.println("Enter Second Number");
[code]...
i am running into a problem with my program. It seems my BasicCalc class is running fine but having some difficulties with displaying it with a system.out. println instead of the system.out.printf. When i do try and change it i get this result:
C:myJava>javac BasicCalc.java
C:myJava>javac Calculate.java
Calculate.java:42: error: no suitable method found for println(String,double,char,double,double)
System.out.println("%f %s %f = %f", value1, op, value2, answer);
[code]....
I can't figure out how to complete the for loop for the forward method that needs to calculate each pixel on the path setting it to white, starting at location (x,y) and ending at r.
public class Turtle
{
private static BufferedImage img;
private static int black = 0;
private static int blue = 255; // 2^8-1
private static int green = 65280; //(2^8-1)*2^8
private static int red = 16711680; //(2^8-1)*2^16
private static int white = 16777215; // 2^24-1
private double x,y,theta; // what does a Turtle know?
static // a static initializer list
[code]....
I have one table in mysql in that some rows are there i want to retrieve all rows using servlet and jsp concept and i have done half of the way but not getting output it is showing some info and nothing getting printed on page except columns heading and here is my bean class..
public class TimeDetailBean {
private Time intime;
private Time outtime;
private Date date;
private String eid;
public Time getInTime() {
return intime;
[Code] .....
I compiled the applet, then put the applet in an HTML file using notepad and saved the html file in the right place for it to run correctly. The HTML file runs smoothly, but then it only shows the scrollbar part of my applet, and not the images or any text...
Why is This?????
Java Code:
import java.awt.*;
import java.applet.Applet;
import java.awt.event.*;
import javax.swing.ImageIcon;
public class Temperature_Convert extends Applet
implements AdjustmentListener {
private Image temp;
private Scrollbar bar;
private int old, newtemp = 0;
[code]....
Can you tell me or give a complete resource of file I/O, serialization!
View Replies View RelatedSo for the last few weeks I have been working on a Java project for school. I see the light at the end of the tunnel, but I have run into some speed bumps with my main class. It was working fine, but I was pulling an all night and I deleted some of my code by mistake.Now I am not seeing what is exactly wrong. Anyways, the project was to create an address book complete with a menu system.
Here are all of my classes:
import java.util.ArrayList;
/**
* A model of an address book which keeps track of contacts.
* An address book object should keep track of the concept of a current contact (think index).
* You must use an ArrayList for your implementation.
*/
public class AddressBook {
Contact contact = new Contact();
[code]....
java api that convert speech to text but complete english not predifined words only.
View Replies View RelatedI want To develop a webSite like OLX,QUIKR..Technology using : Java..But i dnt have idea on developing front END..
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View Replies View RelatedHere is my instangable class
The application should generate a random number between 1 and 10 and then ask the user to enter one single number between 1 and 10 to guess what the secret number is
public class Guess{
//Variables
private int Num;
private int rNo;
private String message;
//Constructors
public Guess(){
rNo = 0;
message = "";
[Code] .....
Two errors are
Guess.java:43: error: illegal start of expression
public String getMessage(){
uess.java:43: error: ';' expected
public String getMessage(){
I want to develop a website using jsp and servlets.but i have a few questions:
1: I want to use oracle for database, can i use express edition?
2: After writing the code how do i transfer the code to the client
3: How to deploy the website on internet
I am doing for first time
Below mentioned table which show data on WEB page, thereof i need to develop page for my practice, steps to develop this like as following.
1.Tool Required to develop
2.Connectivity JDBC
create table student
(ROLLNO NUMBER,
NAME VARCHAR2(20),
DOB DATE,
REG_DATE DATE,
ADDRESS VARCHAR2(100),
PIC LONG
)
INSERT INTO STUDENT VALUES(1,'ALI',TO_DATE('01-JAN-1982'),SYSDATE,'','');
INSERT INTO STUDENT VALUES(2,'JHON',TO_DATE('01-JAN-1985'),SYSDATE,'','');
INSERT INTO STUDENT VALUES(3,'CHARLI',TO_DATE('01-JAN-1990'),SYSDATE,'','');
I want to develop an application for client server play the Video On Demand (VOD).i am new for working on video player. Which library will suitable for this and what methods have to fallow.
View Replies View RelatedI want to know the java code for lazy buddy system algorithm which can be run in eclipse or netbeans
View Replies View RelatedHow do i go about developing a simple arithmetic tester program which can be used to support young children improve their arithmetic skill. The program should accepts string data for the player's name and the number of questions they want to try, which will be entered by the user. The program should take in the following inputs from the user:
The name of the player, so that the game can refer to them by name in messages. The name must be between 2 and 20 characters inclusive.
The number of sums that the user wants to attempt. This number must be a whole number, and be between 2 and 50 inclusive.
The program must check that the values entered fall within the valid ranges. The program must also check that no empty strings are entered for names.
Once the player has entered their name and the number of questions they want to attempt, the game begins. The program must generate sums for the player.
The program should generate one question at a time and display the question for the user. The questions must involve two numbers and be either a multiplication, division, subtraction, or addition. For example, the following are all valid questions:
3 * 4 = ?
8 / 2 = ?
7 + 1 = ?
9 - 8 = ?
The first number, second number, and arithmetic operator (multiply, divide, add, subtract) should all be chosen randomly, the program should Generate a new random number for each of the three parts of each sum. this requires you to choose one of the four symbols based on which random number is returned.
A few checks must be carried out before a generated question is displayed to the user. If the question is an addition question, no checks are required. If the question is a multiplication question, no checks are required. However, checks are required for subtraction and division sums.
If the question is a subtraction question, the program must check that the second number is equal to or smaller than the first number. Whilst the second number is larger than the first number, new numbers should be generated.
I'm new to Java and I want to write a program that compute all the possible arithmetic operations of 4 integers.
For example, if the user enter 1, 2, 3, and 4 respectively, then I want the computer to print out the following results:
1 + 2 + 3 + 4
1 + 2 + 3 - 4
1 + 2 + 3 * 4
1 + 2 + 3 / 4
..
1 / 2 / 3 / 4
(parenthesis can be ignored for this program)
This is what I have so far, but I don't know how to continue:
import java.util.Scanner;
public class ArithmeticComputation{
public static void main(String[] args) {
Scanner stdin = new Scanner(System.in);
int num1 = stdin.nextInt();
[Code] ....
I'm looking for a method that allows me to assign char into actual operators, so that I can loop through all the computation.
I have just started to learn programming in the book I am teaching myself from it said how would you write the following arithmetic expression with it being the quadratic formula but only the plus part of it in the plus or minus..
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();
System.out.print("Enter value for A: ");
double A = input.nextDouble();
System.out.print("Enter value for C: ");
double C = input.nextDouble();
double negativeOfB = -B;
[code]....
So I have one set of If Else If statements. My program calculates just the first comboBox. It is retrieving all the values from the other comboBoxes but I do not understand where to place the other If statement structure so I can calculate the other values I have set for the other objects. I would not like to use a different class for each and I know I have my calculations done right below my current if statement. Could it be left there and where shall I place the other if statements so they get read by my arithmetic sequence?
public void actionPerformed(ActionEvent e)
{
Object source = e.getSource() ;
int deckSiz = (int) Decks.getSelectedIndex() ;
int wheelSiz = (int)Wheels.getSelectedIndex();
[code]....
I want to catch the exception in my program is the below way:
class Temp
{
public static void main(String s[])
{
try
{
int x=10/s.length;
System.out.println(x);
[Code] ....
I am expecting my program should give output as "java.lang.ArithmeticException: / by zero" but is giving
Temp.java:11: error: ')' expected
catch (ArithmeticException e | ArrayIndexOutOfBoundsException e)
^
Temp.java:11: error: ';' expected
catch (ArithmeticException e | ArrayIndexOutOfBoundsException e)
^
Temp.java:16: error: 'catch' without 'try'
catch (Exception e)
^
Temp.java:22: error: reached end of file while parsing
}
^
4 error
The program below is intended to find the arithmetic mean of the numbers stored in the array q in two ways: once by storing the numbers in an ArrayList d, where you allow all the necessary conversions to be performed automatically; and once by storing them in an ArrayList e, where you perform all the conversions by hand. Complete the program.
Here is what I have so far:
double[] q = { 0.5, 2.4, 7.4, 2.8, -6.2 };
ArrayList<Double> d = new ArrayList<Double>();
ArrayList<Double> e = new ArrayList<Double>();
for ( double x : q ) {
d.add( x );
e.add ( new Double ( x ) );
[Code] .....
Why does it still show "a / d.size?" I thought I fixed that. Whatever, it's supposed to be "dTotal / d.size()", etc.
I have a given arithmetic expression, which form is (A+B) or (A-B), were A and B are either numbers from 0-9, or another ARITHMETIC Expression.
The first thing that comes to my mind is a recursive function, but how to start...
My goals:
1) Have some source file be read in
2) Specify what arithmetic operators to swap (+, -, /, *)
2) If an arithmetic operator is read (like a + sign etc) then we swap it with its opposite (- for example)
3) Once the swap is complete, the rest of the file stays the same even if more operators are in the file...it is then output to a file (I am going with 1mutation.java)
4) This is where it gets tricky....it then picks up where it left off to finish reading the + operators (or whatever was specified) and repeats steps 2-3 (but the operator that is already swapped gets left as it was / skipped) and the output is saved as 2mutation.java.
The most I have been able to manage is having it changed 1 operator or all of them at once. I deleted a lot of my work to start fresh / master one operator for the time being. Here is what I have:
import java.io.BufferedInputStream;
import java.io.DataInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.PrintWriter;
public class OperatorSub {
[Code] ....
This is the data file I am using. (see attached) The file should be .java or .cpp but I stuck with .txt for now. How to tackle this? Am I on the right track?
I have written this program but I am seeing error when I compile this program ( javac TestArithmetic.java).
1)TestArithmetic.java:26 cannot find symbol
2)symbol: class Arithmetic
3)location: class TestArithmetic
4) Arithmetic ar = new Arithmetic(x1,x2,x3);
1)TestArithmetic.java:26 cannot find symbol
2)symbol: class Arithmetic
3)location: class TestArithmetic
4) Arithmetic ar = new Arithmetic(x1,x2,x3);
2 errors.
Code :
import java.util.*;
class TestArithmetic {
public static void main (String[] args){
float number;
Scanner console= new Scanner (System.in);
System.out.println("Enter first number");
[Code] .....
I am new Java Programming and I am struggling to pass my Java class. How to perform Java but I am trying. For this particular assignment I supposed to:
* Change all variables' data types to double.
* Change the two prompts to request double values
* Change change the two calls to the nextInt() method to nextDouble().
This is the original assignment:
import java.util.Scanner;
public class ArithmeticDemo
{
public static void main(String[] args)
{
Scanner input= new Scanner(System.in);
int firstNumber;
int secondNumber;
int sum;
int difference;
int average;
[code]....