Java Code:
package inventory;
import java.util.ArrayList;
import java.util.Scanner;
import java.io.FileReader;
import java.io.FileNotFoundException;
public class Inventory
{
private static Scanner scan = new Scanner(System.in);
public static void main(String[] args) {
ArrayList<Product> InventoryList = new ArrayList<>();
Inventory I = new Inventory();
int option = 0;
I have to read this CSV file into an arraylist. Arraylist i call weight. The data in the csv file has 200 double values which is the weight of all the 200 bananas. Since the csv file is a string i guess I cannot create an double arraylist from scratch, but i have to parse the csv file afterwards, right? Well this does not work and ill show you the code in a bit, just need to state all my issues.
My second issue is how to be able to print out the the weight items (in this case bananas) next to the weight of the bananas taken from the array? This has to be done by constructor i assume? I just dont know how constructors work with arraylists.
Id like it to look something like this in the output window.
Banana 34,55
Banana 43,55
Banana 23,74
and so on (200 times)
so these are my issues, how to parse and how to print the arraylist weights and the item banana in the output window with constructor. Here is the code.
package Main;
import java.io.BufferedReader;
import java.io.FileReader;
import java.util.ArrayList;
import java.io.IOException;
import java.io.Serializable;
import javax.swing.JOptionPane;
[Code] ...
I have created this project and want to be able to add new members to my members arraylist, store the input in a .txt file and load the new members after closing and opening the program.
[URL] ....
I have created this project and want to be able to add new members to my members arraylist, store the input in a .txt file and load the new members after closing and opening the program.
[URL] .....
I have declared an array list that will store data type of 1 Character and 2 integer. The data that will be store in this list is
1. A = {0 3}
2. B = {0 5}
3. C = {0 3}
4. D = {0 3}
5. E = {0 5}
6. F = {0 6}
Now here the alphabets are routers and integers are there con1 and con2 respectively. I have a set of router={ A,B,C,D,E,F}.
Step 1:I have to subtract con1 from con2 i.e. (3-0) of all the routers and
Step 2: then put the router having largest value in new set 1 and
Step 3: then this router will be subtract from the router set.
Step 4:then again I have to repeat the step 1 until the value of routers become <= 1.
Now what I did is I defined 3 arrays first is String array that stores names of routers, 2nd array that stores the first value and 3rd array that stores the second value. I can find the largest value but how to store the name of router against the largest value in the set.
public class DemoBlock{
public static void main(String[] args){
System.out.println("Demonstrating block scope");
int x = 1111;
System.out.println("In first block x is " + x);
[code]....
this is the error I'm getting..reached end of file while parsing. I think this is referred to as either an extra curly brace or that I am missing a curly brace but I'm not 100% sure.
I have the bellow file. What I should do the parsing sentences from the given file?
[ A/DT form/NN ]
of/IN
[ asbestos/NN ]
once/RB used/VBN to/TO make/VB Kent/NNP
[ cigarette/NN filters/NNS ]
has/VBZ caused/VBN
[ a/DT high/JJ percentage/NN ]
of/IN
[Code] ....
I'm having some kind of weird problem reading input from a file. It says that my scanner object I'm using to hold an item of information isn't initialized, when I do try to initialize it, it says error variable already initialized. I'm using the scanner to read input from a file whose contents are this
10
150.4
88.4
-3.14
499.4
799.4
1299.8
0
1900.2
901.7
4444.4
This is my program
import java.util.*;
import java.io.*;
public class QudratullahMommandi_3_07 {
Toolkit_General toolKit = new Toolkit_General();
public static void main (String[]args)throws IOException
[Code] .....
This is the error message
QudratullahMommandi_3_07.java:34: error: variable holder2 might not have been initialized
String holder2 = holder2.trim();
^
1 error
----jGRASP wedge2: exit code for process is 1.
----jGRASP: operation complete.
I am trying to merge two files together using the Apache Commons CSV library. I figured it was easier to use this than to write my own implementation.
The first problem is that the output contains the underlying class logic and as a results my output contains a bunch of un-needed data. How do I get rid of this? I just want the column and row data, nothing else.
Example
I want this:
customerNo, firstName, lastName, birthDate, mailingAddress, married, numberOfKids, favouriteQuote, email, loyaltyPoints
1, John, Dunbar, 13/06/1945, 1600 Amphitheatre Parkway Mountain View, CA 94043
But I get this:
CSVRecord [comment=null, mapping=null, recordNumber=1, values=[customerNo, firstName, lastName, birthDate, mailingAddress, married, numberOfKids, favouriteQuote, email, loyaltyPoints]]
CSVRecord [comment=null, mapping=null, recordNumber=2, values=[1, John, Dunbar, 13/06/1945, 1600 Amphitheatre Parkway
Mountain View, CA 94043
The second problem is that I just want the row Headers from the first file, but the row headers from my second file are still being included in my output. I used withSkipHeaderRecord(true), but it didn't have the desired results.
Code is below.
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.io.PrintWriter;
import java.io.Reader;
import java.util.ArrayList;
[Code] .....
class thread1 implements Runnable{
Thread t;
thread1() {
t=new Thread(this,"my thread");
System.out.println("current thread : "+t);
t.start();
[Code] ....
I m getting an error : threadmain.java:44: error: reached end of file while parsing ....
I thought of processing line by line using scanner and then split each line in the ":" . But then i stuck, i only need the right part of the ":" so that i can save it to a class e.g. John Doe, 133456593, married etc.
Java Code: Name: John Doe
TRN: 133456593
Status: Married
Income: 22500
Receipts:
Receipt ID: 1
Date: 25/2/2014
Kind: Basic
Amount: 2000
Company: Hand Made Clothes
Country: UK
City:London
Street: Cambridge
Number: 10
Receipt ID: 2
Date: 28/2/2014
Kind: Entertainment
Amount: 500
Company: Floca Cafe
Country: Italy
City: Rome
Street: Piazza
Number: 4 mh_sh_highlight_all('java');
Every time i compile my program, i get these errors..
java:102: error: reached end of file while parsing
}
^
java:116: error: reached end of file while parsing
2 errors
I'm almost done with everything before the arithmetic part of the program. here is my code..
[import java.util.Scanner;
public class pdonahue_Numerology
{
public static void main (String[] args)
{
int month = 0;
int day = 0;
[Code] .......
How to maintain quotes in a text file? If no source files .
Новый точечный .jpg
Prompt in what direction to go .... maybe you can use other languages to do it?
Заранее СПасибо!!!
I am new to java coding. so reading the log file using java code.
1) I wish to parse a file, and find a value for variable e.g. [StorageVersion].
2) After finding the value, it will be pushed to database.
Log File Path e.g. C:Temp est.txt"
Sample Logs :
{
//NAME
[1.2.2917] := s['3.4.454545'];
//Parameter
[1.2.2947] := s['1.2.56778'];
//Enabled
[1.2.3910] := B['22.43434.12232'];
//MAXCLOUMNNAME
[1.2.4217] := N['1.7.899982'];
//StorageVersion
[1.2.2917] := K['706146.0.22106932'];
}
From above log file, the Value i need is "706146.0.22106932"
I am reading records from a txt file and storing it into an array
import java.util.*;
import java.io.*;
public class PatientExercise {
//patients exercise time
public static void main (String[]args) throws IOException{
Scanner in = new Scanner(new FileReader("values.txt"));
double [] patientTimeRecords = new double [300];
int noExerciseCount=0, numPatients =0;
double highest=0, lowest=0, avg=0, totalTime=0;
[Code] ....
However an error msg keeps popping up:
Exception in thread "main" java.util.NoSuchElementException
at java.util.Scanner.throwFor(Scanner.java:907)
at java.util.Scanner.next(Scanner.java:1530)
at java.util.Scanner.nextDouble(Scanner.java:2456)
at pastpapers.PatientExercise.main(PatientExercise.ja va:44)
line 44 is:patientTimeRecords[i]= in.nextDouble();
I'm new to java. I have a Product class with getters and setters.
E.g. setProdType & getProdType
I want to store the values from a file into that
StringTokenizer token = new StringTokenizer(line,"**");
while(token.hasMoreElements()) {
int p.setProdType = Integer.parseInt(token.nextElement().toString());
}
I am new on java. I have following xml file structure. What I need to do is that :
1) Read this xml file and convert to arraylist.
2) insert this arrayList into Mysql database.
XML File is
<?xml version="1.0"?>
<root>
<individualorders>
<individualorder>
<patientRole>
<id>8839</id>
[Code] ....
i have saved an arrayList to file using the ObjectOutputStream but now when i try to read the file i get problems.
saveOnFile:
public void saveOnFile() {
try {
ObjectOutputStream output = new ObjectOutputStream(new FileOutputStream("object.txt"));
output.writeObject(mediaList);
output.close();
} catch(Exception ex) {
ex.printStackTrace();
[code]....
i have to read a file and then store that file in an arraylist. i have 2 clasees, a pyramid and a cylinder class and the file contains unorganized shapes. i want to store all of them in the array but my code does not return anything
import java.io.File;
import java.io.FileNotFoundException;
import java.util.ArrayList;
[Code].....
I wanna learn to create a method where I use a scanner or any other way to input.The stuffs I input will be strings. The whole thing will be like a destination creator.So if I input the string USA, it will write this to a file:
1:USA
When I go to the method again the ID will be added so if I input UK, the file will contain:
1:USA
2:UK
Now if I terminate the program, next time when I run it again it will be able to read the ArrayList, so if I wanna go to the method again and write: Norway the file will contain:
1:USA
2:UK
3:Norway
Later I also want to be able to use println to show all of these lines from the file, as well I would like to be able to delete an ID, so if I delete ID 2 the file would contain:
1:USA
3:Norway
I'm quite new to Java, I'm in a Java course since soon 3 weeks back and I have sure learned a lot, all the loops and basic statements that exist in most languages, but now when it comes to this I just don't understand.
The initial output of the texfile is this. NO ARRAYLIST OR COMPARATOR IS ALLOWED:
Steve Jobs 9 f 91
Bill Gates 6 m 90
James Gosling 3 m 100
James Gosling 3 f 100
Dennis Ritchie 5 m 94
Steve Jobs 9 m 95
Dennis Ritchie 5 f 100
Jeff Dean 7 m 100
Bill Gates 6 f 96
Jeff Dean 7 f 100
Sergey Brin 27 f 97
Sergey Brin 22 m 98
The collateExams method collates/sorts exam objects starting with the first 'm' (midterm) of the first object and immediately followed by the same person's 'f'(final). Only a SINGLE loop construct is allowed. The output from collateExams() should be the one below but my code is not working, i.e. collateExams method is not working. The output from collateExams() should be
Bill Gates 6 m 90
Bill Gates 6 f 96
James Gosling 3 m 100
James Gosling 3 f 100
Dennis Ritchie 5 m 94
Dennis Ritchie 5 f 100
Steve Jobs 9 m 95
Steve Jobs 9 f 91
Jeff Dean 7 m 100
Jeff Dean 7 f 100
Sergey Brin 22 m 98
Sergey Brin 27 f 97
I am getting [b]NullExceptions[/b] at
r[2*position[exams[i].getID()]+1] =
new Exam(r[i].getFirstName(), r[i].getLastName(),
r[i].getID(), r[i].getExamType(), r[i].getScore());
import java.io.*;
import java.util.*;
[Code] ....
I am advised to use a while loop the Scanner method hasNextLine() and in the while loop body, call the Scanner method nextLine(), and add the returned String to the ArrayList of Strings. what I have gotten so far:
Scanner input = new Scanner(new File(""));
while(input.hasNextLine()) {
String line = input.nextLine();
System.out.println(line);
I would like to create an ArrayList from data types stored in a text file.The ArrayList would be multidimensional with two data types; int, String.
Example text file could be:
4 cahiers grand format
3 stylots bic bleu
5 gommes
I find it very difficult for multiple data types i don't see how its possible.
I have been trying to get this method to work for a few hours now, for some reason I get an IndexOutOfBounds exception every time. Basically I am trying to read a txt file and add the words to an ArrayList as strings separated by a space .
private ArrayList<String> readLinesFromFile(BufferedReader inputFile) throws IOException
{
String value = null;
ArrayList<String> result = new ArrayList<String>();
while((value = inputFile.readLine()) != null){
String[] values = value.split(" ");
for (int i = 0; i < values.length; i++){
result.add(values[i]);
}
}
return result;
}
//compiler error I'm receiving
J:CS3Student Folder Review Lab #2APlusImage.java:41: error: cannot find symbol
xcor.add(read.nexInt());
[Code].....
I'm trying to create my own arraylist using Collection. My program doesn't do anything. Obviously, I haven't a clue.
import java.util.Collection;
import java.util.Iterator;
public class MyArrayList<T> implements java.util.Collection<T> {
private int size = 4;
private T[] mArray;
public MyArrayList(String[] args) {
[Code] ....