Getting Error On Java Code Using Parallel Arrays
Dec 1, 2014
This is my code.
public class PA9 {
public static void main(String[] args) throws FileNotFoundException {
// create data file to read from
File inf = new File("cityPopulationData.txt");
//Create a file to write out to.
PrintWriter fileOut = new PrintWriter("output.txt");
[Code] .....
This is my error
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 PA9.getData(PA9.java:35)
at PA9.main(PA9.java:22)
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Dec 1, 2014
Write a Java program to read from the data file, find the city with the highest population based on the 2010 census data, the city with the highest population growth from 2010 to 2013, the city with the lowest population growth from 2010 to 2013, and the city with the highest density (number of persons per sq. mile).
import java.io.File;
import java.io.FileNotFoundException;
import java.io.PrintWriter;
import java.util.Scanner;
[code]....
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Mar 8, 2015
I'm building a text based "game" where you are communicating with this android creature called Gargoid , at a VERY primitive level . how it works is, simply the user type in a sentence which is decoded for meaning by comparing it with a built in list of words in order to figure out what the user is saying, and then reply with a a relevant response also from a list of built in words. the whole thing would look something like this,
user: what is your name
Gargoid : my name is Gargoid, nice to meet you
user: how is the weather
Gargoid: the weather is wonderful
so far I have 11 arrays which are the following
String[] for user typed in words used for comparison to find meaning ..An Array of String[] , 7 so far, to hold what I call the Gargoid dictionary for example String[] greeting={hi,hello,aloha}, words that indicates greeting int[] called frequency to determine which of the 7 arrays have the greatest "relevancy" to what is being said. and finally another String[] for responses here's the actual code, I want you guys to tell me if there's a way to reduce all this never ending number of arrays? and also is this code a good application of object oriented programming?
MainClass
public class GargoidMain {
public static void main(String[] args) {
TheKeyBoard keyboard=new TheKeyBoard();
TheTranslator translator=new TheTranslator();
TheBrain brain=new TheBrain();
translator.translate(keyboard.userSaysWhat());
brain.respond(translator.userSays());
[code]....
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Dec 5, 2014
The assignment was to create 3 parallel arrays to make a student database.The first array will contain 4 digit student id's, the second a string array with student names, and the third array is student gpa's. The user is to receive a dialog box asking to enter the student id, and if the id is correct the user is to see the student name and grade. If the user input does not match any value in the student id array, the user is to receive a message stating invalid id. Here is the code I have so far.
For some reason no matter what the user enters, the information for the last array entry is displayed.
public class parallelStudent
{
public static int sequentialSearch(int[] array, int value)
{
int index; //loop control variable
int element; //element the value is found at
boolean found; //flag indicating search results
[code]...
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Mar 26, 2015
how to loop my arrays, so when I sort them (highest/lowest) the 2nd array corresponds to the sorted array
import java.util.Scanner;
import java.util.Arrays;
public class ArraysArrays {
public static void main (String[] args){
[code]....
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Mar 30, 2014
I am trying to sort a set of parallel arrays. I really believe that the code is correct, but it is not working out as expected.This is the specific code for the sort:
Java Code: for (int y = 1; y < (dataArray.length + 1); y++)
{
for (int x = 0; x < dataArray.length - 1 ; x++)
{
if ((dataArray[x][1]) <= (dataArray[x + 1][1]));
{
tempOpen = dataArray[x][1];
dataArray[x][1] = dataArray[x + 1][1];
dataArray[x + 1][1] = tempOpen;
[code]....
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Dec 24, 2014
I am trying to use parallel arrays to store names and job titles, then display the name/job title combo depending on which is entered. I have always struggled with arrays, so I'm sure that's where my issue is, but I am not sure how to resolve this one. I tried to use the toString() method with the jobs to see if that would allow the job title to match to one of the titles listed, and I tried to not use the toString() method with the names to see if that would allow the name entered to match to one of the names listed in the array. Both options only display the "invalid" message no matter what I enter. What would be the best choice to use the arrays to properly display the information ....
import java.util.*;
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
public class JEmployeeTitle2 extends JApplet implements ActionListener
{
Container con = getContentPane();
[Code] .....
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May 11, 2015
I've been working on a question using parallel arrays where the user inputs an integer 1-12 and the output will be the name of the month and the number of days in that month. This is what I have so far
import java.util.*;
public class DaysMonth
{
public static void main (String args[]) {
Scanner keyIn = new Scanner(System.in);
int[] days = new int[]{31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
[Code] ....
After I enter the user int it just ends.
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May 21, 2015
I am getting a compile error message when I am trying to compile someone else code using Eclipse. The partial code description is below as follows:
public String decrypt(String password) {
try {
// create the key and parameter spec
KeySpec keySpec = new PBEKeySpec(password.toCharArray(), salt, interactions);
SecretKey key = SecretKeyFactory.getInstance(keyFormat).generateSecret(keySpec);
AlgorithmParameterSpec paramSpec = new PBEParameterSpec(salt, interactions);
[Code] ....
Below is the following error message:
Access restriction: The type 'BASE64Decoder" is not API (restriction on required library '/usr/lib64/jvm/java-1.8.0-openjdk-1.8.0/jre/lib/rd.jar')
How do I troubleshoot it?
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Jan 2, 2015
I downloaded this code from Head First Java. But when I tried running it on Eclipse, it gives this error message.
import javax.sound.midi.*;
public class MiniMiniMusicApp { // this is the first one
public static void main(String[] args) {
MiniMiniMusicApp mini = new MiniMiniMusicApp();
mini.play();
[code]....
and this was the error message: Jan 02, 2015 8:10:36 PM java.util.prefs.WindowsPreferences <init>Could not open/create prefs root node Software Java SoftPrefs at root 0x80000002. Windows RegCreateKeyEx(...) returned error code 5.
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Jun 25, 2014
I get the following error when trying to run code.
java.lang.NullPointerException
at conntecttoDB8.SSHCommandExecutor.main(SSHCommandEx ecutor.java:26)
package conntecttoDB8;
import java.io.InputStream;
import com.jcraft.jsch.Channel;
import com.jcraft.jsch.JSch;
import com.jcraft.jsch.Session;
[Code] ....
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Feb 21, 2015
I have to write a program that calculates the average temperature for a month using parallel arrays (it is mandatory to use a parallel array). I'm new to Java (I'm more familiar with C++) so I get confused with the use of methods. I know how to compute the averages already, I just setting up the parallel arrays. This is what I have so far:
Java Code:
import javax.swing.*;
import java.util.Scanner;
public class Temperature {
public static void main(String[] args) {
String[] day = {"Monday", "Tuesday", "Wednesday",
"Thursday", "Friday", "Saturday", "Sunday"};
int[] temp = new int [7];
[Code] .....
For now I just want to show the contents in my array before I start computing averages.
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Apr 6, 2014
I have searched on internet but did not find something useful. I do not want to use collections. here's what i have written
class ArrayDemo3
{
static void union(int x[], int y[])
{
System.out.println("Union Elements:");
for(int i=0; i<x.length; i++)
{
for(int j=0; j<y.length; j++)
[code]....
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Jan 4, 2015
I am receiving one error when using arrays and methods. It's at the bottom of the code and I have commented what the error is .
import java.io.*;
import javax.swing.*;
public class CEO_PROGRAM_PartB
{
public static void main (String[] args) throws IOException
[code]....
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Nov 19, 2014
As part of the instructions we are required to use loops and methods to solve to program this code. We are not allowed to use any set functions that are already built in java.The methods for intersection and difference MUST return int value.
import java.util.Scanner;
public class setPractice {
public static Scanner kbd;
public static final int MAXSIZE = 20;
public static void main(String[] args) {
kbd = new Scanner(System.in);
[code]...
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May 22, 2014
For my jsp file, the code editor shows no error, but the projects window shows an error. I built my project again, cleaned the project, restart eclipse twice and summoned cthulhu. But my project still shows an error. How do I find the cause.
Eclipse project -
JSP file -
<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<%@ taglib prefix="mine" uri="DiceFunctions"%>
[Code] ....
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Apr 5, 2014
I have written some error checking code
File name ErrorPage.jsp
<%@ page language="java" isErrorPage="true" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Error</title>
</head>
[code]...
I have put error.jsp and badpage.jsp file in public access folder that is web content in eclipsewhen I am running the code I am status code of 500 and not the errorpage.jsp message .
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Feb 17, 2014
So I am finishing up a GUI that randomly rolls a dice and shows you the dice face from a file that I have on my computer. It compiles fine, but when I open the GUI and press the button "Roll" it gives me errors and does not display the images.
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.border.*;
import java.util.Random;
[code]....
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Jan 14, 2015
I am pretty new to Java and I am working on a sample Search code from my textbook. I can't figure out why I am getting the following error because I copied the sample exactly as it is in the book. The error is illegal start of expression on the second to last line.
public class Search {
public static final int NOT_FOUND = -1;
public static int binarySearch( int [] a, int x )
{
int low = 0;
int high = a.length - 1;
int mid;
[code]....
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Apr 6, 2014
the system I am using is blue jay and java. my problem is that I have this error message pop up whenever I try to compile any of my 6 classes. Three of the classes are cities, 3 others are shops, and the final one is a inventory called Player. The following is the error code that appears when I try to compile class THshopB or class CityB.
method run in class CityB cannot be applied to given types;required: Player; found: no arguments; reason: actual and formal argument lists differ in length
A similar error occurs for the rest of my City and THshop classes,except it replaces the class CityB with CityA and occurs in class THshopA, replaces CityB with CityC when occurring in class THshopC.The public methods of CityB and THshopB are shown below, as I believe that something is wrong with the public method of one or the other. I have the code [CItyB.run();}] inside of class THshopB, and run is the part that gets the red highlight error described above.THshopB public method
[ public static void shop(Player inventory){
CityB.run();}]
CityB public method
[ public static void run(Player inventory){
THshopB.shop(inventory);]
All of my THshop classes are written in the same format, and all of my City classes are written in the same format,
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Jun 4, 2014
My issue is that when I run the code if I enter anything but 1, 2, or 3 the code breaks. I have spent hours trying to find the error. here is my code
import java.util.Scanner;
public class Tester {
public static void main(String[] args) {
/**
* constructor
* pre: none
* post: inherit values of other classes
*/
Car Car = new Car(); //inherits the properties of the Car class
Truck Truck = new Truck(); //inherits the properties of the Truck class
[code]....
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Mar 26, 2015
There are 2 methods and a main one. The first is a void that creates a 3x4 2d array and the second is to search for a value in the array, if found it will return the number of the row that contains that value. If not, it will return -1, but I am getting 1 error and 1 dead code warning.I will put comments at the lines that contain the problems
import java.util.Scanner;
class Question4{
public static void main(String[]args){
Scanner s = new Scanner(System.in);
int x,n;
System.out.println("Please input the value that will be used in the array");
x=s.nextInt();
System.out.println("What is the value you want to search for?");
n=s.nextInt();
createArray (x,n);
[code]....
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May 21, 2015
I am getting error message on Java code that was developed by someone else and is supposed to work.
public String decrypt(String password) {
try {
// create the key and parameter spec
KeySpec keySpec = new PBEKeySpec(password.toCharArray(), salt, interactions);
SecretKey key = SecretKeyFactory.getInstance(keyFormat).generateSecret(keySpec);
AlgorithmParameterSpec paramSpec = new PBEParameterSpec(salt, interactions);
// create the cipher
[code]...
the error message is as follows: Access restriction: The type 'BASE64Decoder" is not API (restriction on required library '/usr/lib64/jvm/java-1.8.0-openjdk-1.8.0/jre/lib/rd.jar')I am using eclipse.
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Mar 7, 2015
import java.io.InputStreamReader;
import java.util.Scanner;
public class FinalCombinations {
public static void main(String[] args){
//Read number of values
System.out.println("Enter the no of values");
[Code] .....
I am getting output like this
Enter the no of values
4
Enter the values
1
2
3
4
Enter the number for combination
2
C(4,2)=6
1
1
2
1
1
3
1
1
4
2
2
3
2
2
4
3
3
4
where as I want output like this..wit one array
1
2
1
3
1
4
2
3
2
4
3
4
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Feb 24, 2014
I found an error in these code when I compile it
"uses or overrides a deprecated api"
Java Code :
import oauth.signpost.OAuthConsumer;
import oauth.signpost.commonshttp.CommonsHttpOAuthConsumer;
import org.apache.commons.io.IOUtils;
import org.apache.http.HttpResponse;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.DefaultHttpClient;
public class JavaRestTweet {
[Code] .....
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Mar 17, 2014
We are getting "Code too large" compilation error for one of our class. This class contains public String fields for label ID and value. We use this class for localization, except for English all other language labels come from .properties files.
The reason we are getting this error is because we have a static block in which using reflection we are populating a HashMap with all public fields and their value. The number of fields have gone up to the extinct where we are crossing the 64K limit for a static method. One of the most feasible solution was to use .properties files for English labels as well.
I will be calling this class MyLabels. We defined a super class for MyLabels called MyLabelsExt. And now we are adding labels into the super class instead of the MyLabels. By running some tests we confirmed that the map that we initialize in MyLables class contains all the fields from both MyLabels and MyLabelsExt class.
How is the 64K limit error not coming if the labels are defined in a super class. Does that mean Java is able to identify that some of the fields are coming from parent class, and that is being treated as separate from the child class. And how is the map that we initialize having all the value.
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