Methods Start Will Give Indexes Into Text Where Found Match Starts
Jun 29, 2014
public class Regextest {
public static void main(String a[]){
String stream = "ab34ef";
Pattern pattern = Pattern.compile("d*")
[code]....
My question is: The methods start()will give the indexes into the text where the found match starts .d*, this means if a number found.index must be returned. Why doesn't it print 3? 12345
Another question: Why it prints 6?
0>a
.
.
.
5>f
What is this 6 in out put?
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Feb 18, 2014
I have a large text file of 1 GB size. I need to print the line when a matching word is found in a particular line. Below is the code I am using. But if there are many lines that has the matching word, it's taking lot of time. Any solution to print the lines much faster.
Scanner scanner = new Scanner(file);
while (scanner.hasNextLine()) {
String line = scanner.nextLine();
if(line.contains("xyz")) {
System.out.println(line);
}
}
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Dec 16, 2014
I am writing a program for a game. It is between the user and a virtual player. The game starts with a pool of consecutive integers 1-100. The size of the pool is based on a random generated number at the beginning of the game. At the start, both players' scores are 0. For each turn, the player picks one number from the pool. That value is added to the player's score, the computer gets the sum of all the remaining numbers in the pool that divide evenly into the player's pick. The player's pick and its divisors are then removed from the pool.
The player should be able to play the game as many times as she wants without ending the program. Instructions should appear on the screen only once at the start of the program.
For each turn, both players' current score, the current pool of numbers, and a prompt for a number to be entered should show onscreen. I have written the code until I get to the function that updates the pool of numbers after a turn.
import java.util.Scanner;
import java.util.Random;
public class SlickPick {
public static void main (String[] args){
Scanner read = new Scanner(System.in);
int []pool = new int[100];
[Code] ....
My thinking is that I need to use the binary search to find the indexes of the divisors array and then use those indexes as the start values. I'm not sure how to assign the divisors indexes to start. Do I need an array for start? Whenever I run the program, the only value missing is 3.
//Name : poolUpdate
//Description : This function modifies the contents of the pool as a result of a turn of play.
//Parameters : The pool array, the divisors array, the size, and the user's pick.
// :
//Return :
public static void poolUpdate(int[] pool, int[] divisors, int size, int pick){
int low=0;
int high=size-1;
[Code] ....
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Feb 14, 2014
With the code below, I am trying to replace all regex matches for visa cards within a given text file.
My first test was with a text "new3.txt" exclusively containing the visa test card 4111111111111111. My objective was to replace the card with "xxxx-xxxx-xxxx-xxxx". This was successful.
However, when modifying the text file to include other characters and text before and after (ex: " qwerty 4111111111111111 adsf zxcv"), it gives mixed results. Although it successfully validates the match, it replaces the whole text in the file, rather than replacing solely the match.
When trying this search and replace with words (rather than a regex match), it does not have this behavior. What am I missing?
import java.io.*;
import java.util.regex.*;
public class BTest
{
//VISA Test
private final static String PATTERN = "(?s).*4[0-9]{12}(?:[0-9]{3})?.*";
public static void main(String args[])
{
try
[Code]...
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Apr 21, 2015
Where are all these illegal start of operations and all of these other method errors coming from.I've written enough methods not to have this problem.
----jGRASP exec: javac -g Assessement.java
Assessement.java:29: error: illegal start of expression
public void addQuestionAnswer(){
^
Assessement.java:29: error: illegal start of expression
[code].....
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Apr 17, 2015
I am assigned to create a program "Simpletron" that the only language understands it is Simpletron Machine Language or SML. I figured out the most but I get the message "No main methods, applets, or MIDlets found in file" when compiling the program. I pasted my program so that you can see.
//A Simpletron computer simulator */
import javax.swing.*;
import java.text.DecimalFormat;
import java.awt.*;
import java.awt.event.*;
[code]....
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Jan 10, 2014
Here is the code
public static void main(String[] args) {
Scanner Keyboard = new Scanner(System.in);
System.out.print("Please enter your name.");
String name = Keyboard.next();
name = "name";
[Code] ....
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Apr 13, 2014
The problem I'm having is when the text box pops up and ask to start with a root name, I cannot enter anything and I am not sure what I have done wrong.
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.util.*;
public class FamilyTreeDemo extends JFrame
[Code] ....
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Mar 24, 2015
For an assignment I need to read an input text file and evaluate the triangle based on the data found in the text file which consists of an unknown number of groups of 3 numbers (Each group representing a different triangle). According to the project specifications I need to have a main method and several other methods. I have the main method set-up to receive data correctly but I am confused as to how I would get the values out of the text file and use them in the main method. For example, if I were to call the computePerimeter method in my main method, how would I make sure I get the correct perimeter for the given data?
Here is the code I have so far:
import java.io.*;
import java.util.Scanner;
public class TriangleEvaluator
{
public static void main(String[] args) throws FileNotFoundException
{
Scanner in = new Scanner(new File("triangleData.txt"));
double s1;
double s2;
double s3;
while (in.hasNextDouble())
[Code] ....
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Oct 16, 2014
I am new to making an installer so far i have made only one and i used "install creator"
I just make a watch (clock) application and i want when the windows start its also starts automatically except if it is closed by the user
just like widows clock widget.
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Oct 6, 2014
import java.util.Scanner;
public class Arraykey {
public static void main(String[] args) {
System.out.println("Enter array size: ");
Scanner input = new Scanner(System.in);
int size = input.nextInt();
int [] a = new int[size];
for(int i=0 ; i<size ; i++){
[Code] ....
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May 18, 2014
I have a login window, which when sucessful will activate a new Applet/JFrame. The problem is that the login window remains in the background under the new JFrame. I want this to diappear. I want to either set the visibility to false, or close it.This is how the new window is started:
if(sucess.equals("flase")){
DBAccess dba = new DBAccess();
dba.setFname(fnameusr); //fnameusr
dba.setLname(lnameusr); //lnameusr
dba.main(null);
//LogIn.exit(0);
}else{
JOptionPane.showMessageDialog(null, "Your credentials were not entered correctly or you may not be authorised to access this system.");
System.exit(0);
}
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Apr 23, 2014
When the application starts and the index page is initially loaded, dialog is not shown correctly (panel is not shown) and shows that selected==null. But in debugger prepareSelect seems working correctly and selected is initialised (not null). When I reload page, dialog is shown correctly.
Below are facelets for the page composition and backing bean code.
Register.xhtml
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"
[Code] .....
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Apr 29, 2014
Write a Java code of the method startsWithCount that takes an array of strings words and a String S. The method should return an integer that is the number of strings that starts with S.
For example if:words = { "All", "Arab", "size", "Almond", "Allowed", "here"} and S= "All", then the method should return 2
PHP Code:
public class StringwithCount {
public static void main (String[]args) {
String strings[] = { "All", "Arab", "size", "Almond", "Allowed", "here"};
String output= "";
for ( int i = 0; i < words.length; i++) {
if (words[i].startsWith("s"))
c + +;
}
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May 14, 2014
So I want the method getDisplayText of d to be returned as long as the for loop runs. When I do this I get a compile time error to enter a return statement. I am currently trying to fix it by returning an empty string, yet this doesn't seem the right way to go.
public static String displayMultiple(Displayable d, int count)
{
for(int i = 1; i <= count; i++)
return d.getDisplayText();
return "";
}
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Feb 14, 2013
Recently we updated out database and we changed our tables' and columns' names, I'm developing an adf application with EJB3.0 the question is that the new column names start with a number (eg. 001U_ID), its a kind of encoding the names of the tables so no one can modify the values.
When I create a query on the table it is throwing an exception:
Caused by: com.microsoft.sqlserver.jdbc.SQLServerException: Incorrect syntax near 'U_ID'.
I think the problem is that the EJB3.0 doesn't recognize column names starting with a number!!! What can I do to solve this issue?
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Oct 8, 2014
I am supposed to write a Tester to get the current volume of a balloon that starts with a radius of 0 after it is inflated.This is the balloon:
public class Balloon
{
private double savedRadius;//instance variable
/**constructor!!
Constructs a balloon with a radius
*/
}
[code]....
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Aug 10, 2014
How can I access the index of one character array and store those indexes into another array? I need this array of indices so as to perform an addition with another array.
Suppose I have a char array that stores all the letters of the alphabet (say alpha) and I have an another char array (say letter) that contains some letters in it. I want to retrieve those letters from the "letter" array and check its index in the "alpha" array and store that index into another integer array.
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Apr 24, 2015
Why the following string fails the test below:
@Pattern(regexp = "^[_a-zA-Z0-9-]+(.[_a-zA-Z0-9-]+)*@[a-zA-Z0-9-]+(.[a-zA-Z0-9-]+)*.(([0-9]{1,3})|" +
"([a-zA-Z]{2,3})|(aero|coop|info|museum|name))$", message = "Not a well-formed email address")
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Oct 4, 2014
In a code im writing I was curious as to instead of
contains(".")
I wanted to use
matches(" ") method instead but really having issues with the regex
I have tried //. as well as ^[.] but they give me errors.
I am just trying to match a period but was curious as to what the form was. I read a good amount of materials and seemed simple but getting errors.
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May 11, 2014
how to give URL Connection to this?
import java.awt.*;
import java.awt.event.*;
import java.util.*;
import java.net.*;
import java.io.*;
import javax.swing.*;
import javax.swing.event.*;
public class WebBrowser
[code]....
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Nov 23, 2014
i've worked with java for 1 month, i'm designing some practices at Netbeans IDE. my problem is i tried to make a single colorful interface using panels, adding colors and i want to know if i exist a way to give a color to the JFrame (i tried to use the background color option but this didn't work).
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Mar 3, 2015
I'm trying to insert some data of type date into database table using hibernate.i take the input date from an xhtml form as shown below
addEvent.xhtml
Event Date (dd-mon-yy) :
<br/>
<h:inputText id="eventdate" value="#{eventBean.eventDate}" p:required="required"
p:type="date"/>
<p/>
<h:commandButton value="Add Event" actionListener="#{eventBean.addEvent}" />
<p/>
This is my addEvent method in EventBean.java
public void addEvent(ActionEvent evt) {
uname = Util.getUname();
boolean a = EventDAO.add(this);
if ( a) {
message = "Event has been added!";
[Code] ....
While executing this..i get the following error: ORA-01861: literal does not match format string. Could it be due to any mismatch in date format (chrome browser automatically takes date in the format mm-dd-yyyy )? If yes, how do I resolve it? (I'm using Oracle database)
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Apr 3, 2014
I have a table which contains list of regular expression and its corresponding value.I have to fetch those value and put it HASHMAP where regex as key.I have to compare the each key with the given string(input) and If matches I have to get the corresponding Value for the regex.
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Nov 25, 2014
I am trying to do here is to get as many words as we can to match words from the text file giving the 7 random letters from the arraylist ...
import java.io.File;
import java.io.FileNotFoundException;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Random;
import java.util.Scanner;
public class Scrabble {
public static Scanner scan = new Scanner(System.in);
[Code] .....
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Feb 13, 2014
Any tips or any way?
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