Java String IndexOf Parsing

Dec 24, 2014

In the code below I am splitting the String relativeDN at the "," character. After splitting the String I need to parse the string from the "=" character using indexof and then rebuild the string. I was able to parse the first = sign then rebuild the string but it doesn't remove the subsequent = character. I am trying to parse the string using idexof for all the "=" characters and then rebuild it using StringBuilder. 
 
public class StringTestProgram {
public static void main(String[] args) {
  String relativeDN = "cn=abc,dn=xyz,ou=abc/def";
  //Split String
  String[] stringData = relativeDN.split(",");
 
[Code] ....

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Parsing A Value From A String

Jul 1, 2014

I'm simulating temp/humidity values and want to separate the string value reported and parse each part (left and right) for their respective values. However, I'm having trouble figuring out how to parse the right hand side of this string value, I can get the left using split (shown below), but I think split removes the right hand side of the string value.

the value reads "Temp=22.9*C Humidity=50.9%"
Java Code: private Double parseTemperatureFromString(String consoleOutput) {
String[] tempHumidParts=consoleOutput.split(" ");
String[] tempPart=tempHumidParts[0].split("=");
String theTemp=tempPart[1];
theTemp=theTemp.replace("*C","");
return Double.parseDouble(theTemp);

[code]....

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Sep 1, 2014

I have a String formated in the same way as package names:"com.darkchanter.code.NameValue"..Now I need to extract "NameValue" - the problem doesn't actually block my stuff, but before I write my own code, I Wonder if there is a function already available...

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Jun 7, 2014

I'm trying to write an indexOf() method that will return every time a value occurs in a linked list. I need to use my user-created linked list not the built in Java linked list. For example in a linked list of characters: "i, p, z, z, n, d, p, z" when I search for "z" it should return position variables for 3, 4, and 8. Currently what I have is obviously only returning the first instance.how I can return more than one instance?

public int indexOf(char input) {
LLNode currentNode = this.first;
int position =1;
boolean found = false;

[code]...

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Dec 10, 2014

I have to write Scanner and Parser for the C-Code based on Java and obtain Abstract syntax tree(AST) . I am allowed to use tools like ANTLR, CUP. But i should be able to expand all macros in my code to its basic low level data type like int, boolean and whats the best approach?How to start initially?

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Jun 26, 2015

I have an excel file with data listed as the following, i m trying to parse down using POI
 
A
     B
          C
               D1
               D2
          F
               G1
               G2
               G3
          M
               S1
     R
          T             
     U
L
  X
     Y
         Z
 
is it possible to generate an output like the following
 
A
A-->B
A-->B-->C
A-->B-->C-->D1
A-->B-->C-->D2
A-->B-->F
A-->B-->F-->G1
A-->B-->F-->G2
A-->B-->F-->G3
A-->B-->M
A-->B-->M-->S1
A-->R
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L
L-->X
L-->X-->Y
L-->X-->Y-->Z
 
I have been trying from quite some time but havent figured out the logic ...

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Aug 20, 2014

I am kind of new to Java. I have a query.. look at it. Have an xml like

<ProductList>
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<Details ItemID='1001'/>
</Product>
...
..
</ProductList>

The <Product> tags can run into hundreds or thousands. Quality can have values like Good, Bad, Damaged. Color can also have various values (Blue, Red ..)

ItemID can repeat or can be different. So I want group by ItemID->Color->Good count or BadCount and TotalCount as below.

I want to get a sum like

<ProductList>
<ProductType ItemID="1001">
<Product_Detail CountGood="1" CountBad="2" CountTotal="3" Type="Blue"/>
</ProductType>
...
...
</ProductList>

I think using Hashmaps (Hashmap1 for ItemID, Hashmap2 for color, Hashmap3 for quality) may do the work. But I have to parse the xml number of ItemID's multiply-by number of colors multiply by various colors times for this.

Any better algorithm is there in performance perspective using Java.

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Oct 28, 2014

I am getting :

Error ? java.lang.NullPointerException

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Feb 26, 2015

I've been staring at my code for the past few days and I just can't get it to work out. I'm trying to parse a DOM object with the following XML loaded:

<?xml version='1.0' encoding='UTF-8' ?>
<form>
<record event="boot" date="2013-11-01">
<text>system boot</text>
</record>
<record event="login" host="localhost" date="2013-11-01">

[code].....

I'm trying to get all of the attributes that I care about out of the <record> tags (date, event, etc ...) and stick the data in a wrapper class (DocumentData). If you run this, you'll see that it is close to working, but I'm having trouble getting the attributes in the <subject> and <return> tags (I need to get the errval and uid attributes).

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Jul 1, 2014

I have use below code to parse the xml using xslt i am getting below error. 
 
package com;
 
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.*;
import java.io.IOException;
 
[Code] ....

I am getting below error ....
 
ERROR:  'No more DTM IDs are available'
javax.xml.transform.TransformerException: com.sun.org.apache.xml.internal.dtm.DTMException: No more DTM IDs are available
  at com.sun.org.apache.xalan.internal.xsltc.trax.TransformerImpl.transform(TransformerImpl.java:716)
  at com.sun.org.apache.xalan.internal.xsltc.trax.TransformerImpl.transform(TransformerImpl.java:313)
  at com.TestXSLT.main(TestXSLT.java:34)
Caused by: com.sun.org.apache.xml.internal.dtm.DTMException: No more DTM IDs are available

[Code] ......

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Feb 1, 2014

I have a date sch_date_time=01/02/2014 08:00

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date1 = sdf.parse(sch_date_time);

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Apr 5, 2014

I am suppose to display some information from some text files I tried to do that but the output gives me information from one text file and not information from all text files.

public static void main(String args[]) throws IOException {
String occupations;
double unemployRate_By_Occupations_2008;
double unemployRate_By_Occupations_2009;
double unemployRate_By_Occupations_2010;
//declare the file object and open the file "occupations.txt";
File myFile = new File("occupations.txt");

[code]....

The first text file is:

2.5
3.3
2.6
3.1
2.4
2.7
2.6

[code]....

the second text file is:

4.6
5.7
5.2
6.9
4.5
4.3

[code]....

The third text file is :

4.8
5.6
5.2
6.2
4.6
4.6
2.7

[code]....

Reason for edit:: Renamed title to be more descriptive, added code tags, and removed font formatting

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Oct 23, 2014

public class DemoBlock{
public static void main(String[] args){
System.out.println("Demonstrating block scope");
int x = 1111;
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[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.

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Nov 18, 2014

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
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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] ...

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Jun 10, 2015

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 ]
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Jan 24, 2014

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Mar 26, 2014

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.

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Dec 19, 2014

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.

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Example

I want this:

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CSVRecord [comment=null, mapping=null, recordNumber=1, values=[customerNo, firstName, lastName, birthDate, mailingAddress, married, numberOfKids, favouriteQuote, email, loyaltyPoints]]
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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] .....

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Jun 4, 2014

I'm working on a small game, and I have a quick question about parsing a file. Basically, I have a utility method, which loads an XML file containing the details of all the items for the level, and then pulls the info and passes it to the Item constructor.

A snippet of the XML file is:

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And a snippet of the class is:

public class Item extends Entity {

String name;
private String description;
private String hint;
private Map<String, Integer> givesPlayer = new HashMap<>();
private boolean pickedUp;

[Code] ....

The XML file contains this field:
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My question is this: Should I parse this "5,5" in my utility method and pass the image(s) to the constructor(// B Consturctor), or is it ok to pass the location as a String and parse it in the Constructor( // A Constructor) ?

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Jan 16, 2014

class thread1 implements Runnable{
Thread t;
thread1() {
t=new Thread(this,"my thread");
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t.start();

[Code] ....

I m getting an error : threadmain.java:44: error: reached end of file while parsing ....

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Java Code: Name: John Doe
TRN: 133456593
Status: Married
Income: 22500
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Mar 14, 2015

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call in another class
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[code]...

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import java.util.Scanner;
public class totalprice
{
public static void main(String[] args)
{
scanner keyboard = new Scanner(System.in);
{
DecimalFormat num = new DecimalFormat("#.00");
char meal;
int ammount;
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[code]....

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import java.io.FileReader;
import java.io.FileNotFoundException;
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and the code is
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[Code] .....

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Mar 4, 2015

What the program must do is to parse the string-declared two-dimensional array for the program to compute the student's scores in their quizzes, but I'm having difficulty in anything with Parsing so I don't know what will be the appropriate codes.

Error: incompatible types: String[][] cannot be converted to int[][]

import java.io.*;
public class Quiz3{
public static void main(String[]args)throws IOException{
BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
String [][]StudQuiz = new String [5][4];

[Code] ....

How am I able to compute the average of the score if the data that is needed to be computed is in the string-declared array?

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