Driver Not Call String And Won't Output Correct Information

Oct 14, 2014

What it is supposed to do is decide whether a ceiling fan is on or off, and describe it (color, area, speed). This is all user input (even pi) so it should decide whether to turn it on or off but for some reason skips over my if/else if statements all together.

I've tried changing it around a bit, looking up what my problem may be but this problem remains the same. my code:

import java.util.Scanner;
public class CeilingFan
{
final int slow = 1;
final int medium = 2;
final int fast = 3;
private int speed;
boolean on = false;
private double radius = 5;
private double pi = 3.1415;
String color = "blue";
 
[code]....

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Not Getting Correct Output In Fahrenheit To Centigrade Conversion?

Mar 6, 2014

I am writing a small program to convert temperature from Fahrenheit to Centigrade. I cannot figure out why I keep getting 0.00 for the Centigrade temperature output. Also, I cannot figure out how to get the F degree symbol before or after the temp. I know in JOptionPane the char = 176 is the code for it but im not sure how to code it into the program. My program keeps saying 0.00 for Centigrade temp on the output ....

import javax.swing.JOptionPane;
import java.text.DecimalFormat;
public class tempConversion {
public static void main(String[] args) {
String newDecimal;

[Code] .....

Okay I figured out the Degree symbol!(String DEGREE = "u00b0") phew... now only if i can get the correct output!

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Array Recursion Sum Is Not Producing Correct Output?

Feb 2, 2015

I am trying to sum up the elements of an array. When I test my code the sum is always off by one. For example if I input: 20, 40,30 it gives me 89 instead of 90.

This is what I have so far:

public static void main(String[args]){
int size = kbd.nextInt();
int [] myArray = new int [size]
//user inputs the elements of array
for(int i =0; i<myArray.length; i++){
myArray[i]= kbd.nextInt();
}
int total = sumNum(myArray,0, myArray.length-1)
System.out.println("The sum is"+ total);
}

[code]....

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Calculating Total And Average Of Price Of Items - Not Getting Correct Output

Jun 27, 2014

Why is my program not calculating the total and average of the price of the items and not printing it out?

Java Code:
/*
* To change this license header, choose License Headers in Project Properties.
* To change this template file, choose Tools | Templates
* and open the template in the editor.
*/
package assignment4;

[code]...

It prints out everything but the total of the items and I dont know why. :(

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Test Driver Does Not Accept String Parameter

Jan 6, 2015

I wrote a couple classes and am trying a test driver but it is having an error I do not know how to solve.

Student Class:

public class Student{
private Course[] courseList;
private static int numCourses;
private final int maxCourses;
public Student(int max){
maxCourses = max;

[Code] .....

Error:
javac tester.java
tester.java:6: error: cannot find symbol
one = new Course(name);
^
symbol: variable name
location: class tester
1 error

Same issue, just only one error as there is only one line. It seems like it does not accept my parameters as it cannot find symbol.

I forgot to put the "" in the brackets, it's been a month since I have looked at any java and made this simple mistake.

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How To Output Information Entered In JOptionPane Dialogue Boxes

Feb 25, 2014

I understand the basics of using the JOptionPane Message boxes, but how do i take the information that is entered and store it as a file, or print it. I'm in my 6th week of class, and this happens to be maintenance related. 

import javax.swing.JOptionPane;
 public class Example_Maintenance_System{
  public static void main (String [] args) {
  //Operator Name Input
String operator_name;
operator_name = JOptionPane.showInputDialog("Please scan your barcode");

[code]....

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Pulling Information From A String

Feb 17, 2014

Pulling info from a string. I have a string which contains some results such as [United States of America 1 Netherlands 0, Canada 1 United States of America 1, United States of America 3 Russia 1, Norway 2 United States of America 1, Sweden 2 United States of America 4"]. Now based on user input I need to pull the numbers from this string and add them up. So if the user inputs United States of America it would pull 1,1,3,1,4 put that in an array and add it. I know how to sum the array just not sure how to get that information from a string,

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Generate QR Code From Input Text And Display Information About Input / Output Bits

Nov 12, 2014

I am trying to write a program that will generate a QR Code from an input text and also display some information about the input/output bits. So far I have created the frame and what to do next. And I'm not sure if I am on the right track since my level of programming is not that great. By the way, I am using zxing libraries from GitHub. I know, there are plenty of generators online for the QR Code, but that is not what I am looking for. As you can see on the attached image, I am more interested in the efficiency of encoding 2D data. Also, I noticed that almost all the online projects regarding 2D codes are for Android. Which is not very useful.

// QR Code Generator
package qrcode;
import javax.swing.JFrame;
import javax.swing.JButton;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JTextField;
import javax.swing.border.EtchedBorder;
import javax.swing.border.TitledBorder;

[Code]....

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Students GPA Database - Return String With All Information

Dec 13, 2014

Here is the question with my Pseudocode:

Create an application that keeps track of students. The application should have 3 new classes.

1. Create a class which will represent an instance of 1 student:

I want to be able to display the user's name (Last, First), Age (in years as an integer) and GPA (to 2 decimal points). This class only needs a constructor and a toString method.

2. Create a Team class that will represent a group of students.

This class should allow the driver class to manage students for a given course. The class will keep track of the course name and section, the students in the class, and allow the driver to specify the max number of students to keep track of.

Methods:
1.Constructor
2.It should have a method to insert a single student into the array and return a Boolean indicating success or failure.
3.It should also have a method which returns a string with all of the course and student information formatted for display. You should make the name 12 characters long.

3. Create a driver class that will manage the whole process.

Pseudocode:

BEGIN Driver main method
Initialize student count to 0
Input size of the array
Instantiate a copy of the Team class
Input a student name (or quit)
WHILE (the student name is not quit)
Input student age
Input student GPA

[Code] ....

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String Inputs And Outputs - Printing Information To Console

Mar 22, 2014

Write an application that asks the user to enter his/her first name, last name, birthday, and where you born (all fields type String) and prints their information to the console. Use the techniques discuss in class. The data must be encapsulated. The program must be coded in Notpad++ and compiled in the Command Prompt.

Output should be like this:

Welcome!

What is your first name? Carlos

What is your last name? De La Torre

When is your birthday? 08/12/1979

Where did you born? Puerto Rico

First Name: Carlos

Last Name: De La Torre

Birthday : 08/12/1979

Born in : Puerto Rico

This is what I have so far :

package myinfo;
import java.util.Scanner;

public class MyInfo {
private String name;
private String lastName;
private String birthday;
private String birthPlace;

[Code] ....

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How To Call The Function String

Mar 17, 2015

import java.io.BufferedReader;
import java.io.InputStreamReader;
public class vowels{
public static void main(String arg [])
{
BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
System.out.print("Enter a String : ");

[Code] .....

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String Pool And Function Call

Aug 23, 2014

String pool puzzles me again. I think a==b and a==c are both true...

public class StringPoolTest {
public static void main(String[] args) {
String a = "abc";
String b = f() + "c";
String c = g();

[Code] .....

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How To Call String From Main Method In Different Class

Dec 9, 2014

The following code is located in my main class called InjectionFix. I have another class where I need to call or initiate the string in the code below. How can I achieve this. I tried to create an Object of the class but I cant do this because my other class doesnt contain a main method.How can I get the other class to initiate the code below which is loacted in my main class.
 
public static String escapeDN(String name) {
  StringBuilder sb = new StringBuilder();
  // space or # character at the beginning of a string
  if ((name.length() > 0) &&
        ((name.charAt(0) == ' ') ||
             (name.charAt(0) == '#'))) {

[Code] .....

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String Input / Output And Casting

Oct 2, 2014

I have to create a program that uses the Scanner in String input and Output that will enable the user to convert

double -> int
int -> byte
int -> short
int -> hex-string

The output should look something like this:

Syntax: convert <value> <type>
convert 15.5 int~> 16
convert 128 byte~> -128
<type>: int, byte, short, hex, decimal
Syntax: max <type>
max byte~> 127
<type>: int, byte, short

[Code] ....

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Error - Formatting Output String

Sep 28, 2014

I have this error that keeps coming up any time I select one of my buttons. It actually doesn't hinder the performance of the project, everything works. But I am concerned I missed something and errors are never a good sign.On a slightly different note, I would like to figure out what the best way to format my output would be? I would like it to display as "100.00 F". I have a couple ideas on how to get the F symbol (or other symbol) by inserting something like

String degreesymbol = "F" or whichever it is and then returning that in the output string later. I can't get the decimal formatted correctly and I don't know how to print the degree symbol.Here is the code

import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.FlowLayout;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.text.DecimalFormat;

[code]....

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Convert String To Two Dimensional Char And Output Is Equal To Matrix

Jan 6, 2014

I have written the code:

Java Code:

public static void main(String[]args)
{
Scanner input = new Scanner(System.in);
System.out.print("Type your text: ");
String text = input.nextLine();
int counter = text.length();
if(text.length()> 16)

[Code] ....

And input is: abcdefghijklm

output is:

Java Code:

a b c d
e f g h
i j k l
m x x x mh_sh_highlight_all('java');

So all i want is, if i type: abcdefghijklm

I want this output:

Java Code:

a e i m
b f j x
c g k x
d h l x mh_sh_highlight_all('java');

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Lexicographic Ordering - When Input String Values / No Output Takes Place

Jan 28, 2015

I have a assignment to do some Lexigraphic ordering. I have figured how to get the majority of this done, however, when I input my string values. No output takes place? :s

import java.util.Scanner;
public class Lab03c {
public static void main(String[] args) {
// TODO Auto-generated method stub
Scanner lexi = new Scanner (System.in);
String s1,s2;

[Code] ....

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User Inputs His Full Name In A String From Keyboard / Program Will Give His Initials As Output

Jan 5, 2014

Following is the code for my assignment where a user inputs his full name in a string from keyboard. It should be done using BufferedReader. The program will give his initials as output.

############################

For example: User inputs-> Ram Kumar Das

Program Returns-> R.K.D.

I am written the following piece of code. It does not return the correct output. If "Ram Kumar Das" is given as input, it gives R.K.K. as output. Arrays and objects are strictly not allowed.

Java Code:

import java.io.*;
public class Assignment
{
static int i=0;
static BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
public static void main (String args[]) throws IOException

[Code] ....

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Oracle Driver In Java App?

Jul 26, 2014

Where do I have to put the ojdbc6.jar file so that Java finally recognizes it?I'm trying to connect to a Oracle XE databse from a Java application, but

Class.forName("oracle.jdbc.OracleDriver");

Will throw a ClassNotFoundException no matter where I put the driver. Stuff like this should be extremely simple but I am about to give up for good now.

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Create A Driver Class

May 2, 2014

Why we create a driver class?Instead of creating a driver class, if we want to compile our code so will it show output? Let say, we've created a class GradeBook of the institution for students.So they can easily view their profile information and scores in different semesters.so when we have created a class for this purpose, should we create a driver class or not?What is the big advantage of creating a driver class?

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Replace String Text With Foreign Characters - JTextArea Output Plain Text

May 21, 2014

The problem is i want to replace some string text with foreign characters, but JTextArea returns plainText.

For Example:

str = new String();
str.replace('e', 'é');
textArea.setText(str);

but textArea returns plainText.

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Errors Trying To Get Random Number To Driver?

Sep 25, 2014

I'm trying to use a setter method to pick a random integer to be the MPG for a car. However, I'm having major issues in my driver when trying to use that random number in an instance. I'm not finished with the driver yet because I keep getting "cannot find symbol errors"

import java.util.Random;
public class Car {
private String make;
private String model;
private int year;
private int mpg;
private int odometer;
Random generator = new Random();

[code]...

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Driver For Lockable Coin Class?

Feb 20, 2014

I am having trouble creating a driver for the following program. im new to creating interfaces and i need to make this work.

Lockable interface:

Java Code:

public interface Lockable {
boolean locked();
public void setKey(int key);
public void lock(int key);
public void unlock(int key);
} mh_sh_highlight_all('java');

[code]....

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Unbuffered I / O Requests Send To CD Driver

Feb 25, 2014

I want to write java code which can block unbuffered I/O requests send to CD driver ...

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No Suitable Driver Found For Dbms

Mar 22, 2015

I started learning mysql to connect my program to a database but every time i try to connect I get this error.

java.sql.SQLException: No suitable driver found for dbms:mysql://localhost:3306/apexdemo
at java.sql.DriverManager.getConnection(DriverManager.java:596)
at java.sql.DriverManager.getConnection(DriverManager.java:215)
at JDBCdemo2.main(JDBCdemo2.java:7)

I did the following:

- added the mysql-connector-java-5.1.34 jar to my classpath
- added mysql jdbc driver to the project library
- double checked the url syntax and spelling errors
- checked that the server is running

import java.sql.*;
public class JDBCdemo2 {
public static void main(String[] args) {
Connection conn = null;

[Code] ....

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Accessing Private From Driver Class

May 14, 2015

I came across the below

1) When a variables are declared "Private" How should it be accessed from the driver class ? Sometimes i get an error in driver class saying "your variable is declared Private" why am I getting this error ...

The document says "Private" declared variables should be accessed only through methods. What does that mean.

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