Regular Expression In Java For HTML Pages

Feb 18, 2014

I need to parse an html web page to extract specific information from the tags in Java. For example,

<b>Species </b> Strain </td>

I need to look for the Strain info (Strain is variable in length) in the page. The whole web page is stored as a huge string. I need a regular expression that can identify all the Species and retrieve their corresponding strain info. how to do this or can propose some clever string manipulation methods in Java.

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Java Web Server - Display HTML Pages

Nov 7, 2014

I have a server written in java and can display html pages. but when i try to add css to the page the server doesnt use it.(not my code). Do you have to flag the browser to use css or something?

public class SimpleWebServer extends Thread {
public static final String VERSION = "SimpleWebServer";
public static final Hashtable MIME_TYPES = new Hashtable();
static {
String image = "image/";
MIME_TYPES.put(".gif", image + "gif");
MIME_TYPES.put(".jpg", image + "jpeg");

[Code] .....

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Java String Regular Expression

Apr 17, 2014

I have written below regex for two lines.

String LN1Pattern = "^((?=.{1,35}$)(/([A-Z]{1,5})(|(//[a-zA-Z0-9]+))))$";
System.out.println("/ABC//FGhiJkl012345".matches(LN1Pattern));
 
String LN2Pattern = "^(|((s+(//[a-zA-Z0-9]{1,33})){1,2}))$";
System.out.println("".matches(LN2Pattern));

s+ is a newline character.

But when I combines both as below, its not giving me expected result.

^(((?=.{1,35}$)(/([A-Z]{1,5})(|(//[a-zA-Z0-9]+))))(|((s+(//[a-zA-Z0-9]{1,33})){1,2})))$

For string "/ABC//FGhiJkl012345

//abCD01EF02" - returns False. Expected is True

I think there is some problem in lookahead placed.

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Regular Expression In Java Which Allow Only Numbers

Nov 28, 2013

I need a regular expression in java for phone number which that does not allow any character special character only numbers should be allowed.. My sample program is
 
import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class c {
  public String removeOrReplacePhoneNumber(String input) {
  if (null == input)
  return input;

[Code] ....
 
but this is allowing characters like a,b,c..

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Validate IP Address With Java Regular Expression

Jan 23, 2015

I am trying to implement an example (Book* : Java SE 7 ..By S G Ganesh) for validating an IP address but it fails to validate a valid IP addresses. I found another example on the internet(**) and it works super fine, no problem at all. I edited the code (the one I got from internet) into the exact format like book and it still works super but i don't understand why the books' example doesn't work though both look exactly the same now ,further more, how can i compare String x and y for equality?

public class TestClass {
void validateIP(String ipStr) {
String one = "((25[0-5]|2[0-4]d|[01]?dd?)(.)){3}(25[0-5]|2[0-4]d|[01]?dd?)"; //copied from internet and edited
String two = "((25[0–5]|2[0–4]d|[01]?dd?)(.)){3}(25[0–5]|2[0–4]d|[01]?dd?)"; // copied from book
String x = "((25[0-5]|2[0-4]d|[01]?dd?)(.))";
String y ="((25[0–5]|2[0–4]d|[01]?dd?)(.))";

[Code] ....

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Java Servlet :: String Regular Expression

Mar 7, 2014

Do not want to use loop and  Character.isLetter to validation string , not sure at how to using regular expression?

If I want  8 characters string length, the first 3 is letter, the remind character is number ...

^[a-z0-9_-]{8}$
^[a-zA-Z]{3} + [/d]{5} $  ??

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Regular Expression To Find A Line Beginning With A Certain Character Using Java?

Jul 12, 2014

I have a text file that has the following lines:

the boy is smart
He is from Australia
** Highly important line
That's all

Now, I need a regular java expression that would match a line in this file that begins with the ** characters. That is, when I match the text with the regex, I should get only this line :

** Highly important line

How would I write this regex in java?

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Generate API HTML Pages?

Feb 28, 2014

I have a large product with many maven projects, all of which can be hierarchically tracked back to the same parent. The projects have javadocs and whatnot.

Icommand line instructions (Windows 7) to generate the full API documents html on my local machine (of all the projects together). If there is a maven command for doing this from the CMD, more the better.

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How To Check Regular Expression

Aug 25, 2014

I have to match pattern like 76XYYXXXX mean x can be 4or 5 and Y can be 6 or 7. All x and y should be same .i.e. 764664444

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Simple Regular Expression

Jan 17, 2014

I am currently enrolled in my first Java class. I have taken C# in the past so I've messed with some regular expressions, but I am having trouble finding a good website for Java. Is the syntax the same?I want to create a regular expression to only allow the following characters: c C f F [and any 1-3 digit number].

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How To Use Regular Expression Using Pattern

Mar 16, 2015

I have a string "We have 7 tutorials for Java, 2 tutorials for Javascript and 1 tutorial for Oracle" I need to replace the numbers based on the below condition.
 
if more then 5, replace with many
if less then 5, replace with a few
if it is 1, replace with "only one"
 
below is my code, I am missing the equating part to replace the numbers

private static String REGEX="(d+)";
  private static String INPUT="We have 7 tutorials for Java, 2 tutorials for Javascript and 1 tutorial for Oracle";
  //String pattern= "(.*)(d+)(.*)";
  private static String REPLACE = "replace with many";
  public static void main(String[] args) {
  // Create a Pattern object

[Code]...

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Performing Regular Expression - Valid Last Name

Feb 4, 2015

I have some problems about performing regular expression. In the following code, the output as a result is being "valid last name". But in my opinion, it should be "invalid last name". Because "Doe" has not any space, apostroph or any hypen. Look at the regular expression statement: "[a-zA-Z]+([ '-][a-zA-Z]+)*"
 
package deneme; 
public class Deneme {
public static void main(String[] args) {
String lastName = "Mc-Something"; // Mc-Something 
if(!lastName.matches("[a-zA-Z]+([ '-][a-zA-Z]+)*"))
System.out.println("Invalid last name");
else
System.out.println("Valid last name");
}
}

I know that the asterisk qualifier means character(s) in any number.(Is this wrong?) So for "Mc-Something", 'M' corresponds to [a-zA-Z], 'c' corresponds to +, - corresponds to [ '-], 'S' corresponds to [a-zA-Z], "o" corresponds to +, and finally "mething" corresponds to *, doesn't they? But for "Doe", there is no any space, apostroph or hypen.

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I/O / Streams :: Parsing Logs Using Regular Expression

Dec 1, 2014

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.

Following is the code that i have written till now.

import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;
import java.io.*;
import java.lang.*;
import java.util.*;
import java.util.regex.*;

[code]....

1) I don't know what regular expression can i use.
2) I want a line to check that preceding line should have //StorageVersion .
3) n then i will check any string between := K[' and '];. From above log file "'706146.0.22106932'" is the value that i am looking for.

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How To Split A Text Looking For Values With Regular Expression

Aug 6, 2014

I have to read a text looking for value related to certain variable. The variable are always DE plus identifier from 1 to 99 or DE plus identifier from 1 to 99 and SF plus identifier from 1 to 99. The value can be alphanumeric. How can I get these values? As a start point, I try to use split("DE") but I can get something that is wrong if there is "DE" inside the text that doesn't me interest. I look for scanner but it doesn't work. I guess that there is some way, maybe using regex but I am completely lost ( I have never used regedix before and I am in rush to fix this).

Basically, the text is similar to the below where DE means data element and sf sub field. Some data elements have sub fields while others don't. I guess that there is a way to split with something like DE+anyNumberFrom1To99 = theValueAimed in some array and DE+anyNumberFrom1To99+,+SF+anyNumberFrom1To99 = theValueAimed in other array.

DE 2, SF 1 = 00 SOME TEXT THAT DOESN'T INTEREST ME
DE 22, SF 1 = 0 SOME TEXT THAT DOESN'T INTEREST ME
DE 22, SF 4 = 1 SOME TEXT THAT DOESN'T INTEREST ME
DE 22, SF 5 = 0 SOME TEXT THAT DOESN'T INTEREST ME
DE 22, SF 6 = 11 SOME TEXT THAT DOESN'T INTEREST ME
DE 22, SF 7 = 90x SOME TEXT THAT DOESN'T INTEREST ME
DE 22, SF 7 = 12ab SOME TEXT THAT DOESN'T INTEREST ME
DE 99 = 1234 SOME TEXT THAT DOESN'T INTEREST ME

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Specific Regular Expression - Split A String

Mar 3, 2014

Regular expression which I want to use to split a string. The string could look similar to this:

"a = "Hello World" b = "Some other String" c = "test""

The String is read from a file where the file contents would be:

a = "Hello World" b = "Some other String" c = "test"

After splitting I would like to get the following array:

String[] splitString = new String[] {"a", "=", ""Hello World"", "b", "=", ""Some other String"", "c", "=", ""test""}

I know I could just write a simple text parser to go over the string character by character, but I would rather not do it to keep my code clean and simple. No need to reinvent the wheel.

However, I just cant seem to be able to find the right regular expression for this task. I know that a RE must exist because this can be solved by a finite automaton.

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Jan 1, 2015

I need a pattern that matches Hello Smith (STL Terminal) (15.0).

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Sep 4, 2014

I have a header in file like below:
 
EMP_ID|EMP_NAME|DEPARTMENT|SALARY|ACTIVE1
 
passed to a string

String test = "EMP_ID|EMP_NAME|DEPARTMENT|SALARY|ACTIVE1";
 
I have to check if the header has only alphanumeric and pipedelimiter is allowed.

Other than these i need to raise an error.

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Oct 16, 2014

How to make margin and next pages on printable in the java application???

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May 21, 2014

i have file index.jsp , that approach to reguar java class and call function . in that function i want to get attribute from session like this :

List<Coupon> couponsList = (List<Coupon>)request.getSession().getAttribute("listOfCouponsThatNotExpired");

because this regular java class i get error message ,how to solve this ?

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Java Regular Expressions - Simple Search And Replace

Mar 1, 2014

I want to do a simple search and replace regular expression of lines. I am very unfamilar with Java regular expressions, and I'm not sure how to do something as simple as what I want to do. I have lines that look like this...

Java Code : access_log /home/%USER%/access_log mh_sh_highlight_all('java');

I want them changed so %USER% changes to a string, such as "cyrus," so they appear like this ...

Java Code: access_log /home/cyrus/access_log mh_sh_highlight_all('java');

The reason I want to use regular expressions is because I want to use the replaceAll method of the java.lang.String object. If I use replace I have to convert my strings into char arrays, and my code becomes bulky.

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Constructing Expression Trees In Java By Using BST

May 5, 2014

In this i Write a Java program to parse a syntactically correct arithmetical expression and produce an equivalent Expression TREE. Remember, in an expression tree the terminal nodes are variables and constants, and the interior nodes are operators (such as +,-,*,/). For instance the expression: (1 + 2) * 3 can be represented by the following tree:

INPUT Expression
(1 +2)*3
POSTORDER Expression
1 2 + 3 *
TREE [root=asd.reg.Node@56ddc58]

But when I Execute the program it Shows only Prefix and postfix .But the requered output is in inorder preorder and postorder ...

import ava.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;
import java.util.Scanner;
import javax.swing.tree.TreeNode;

[code]....

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Oct 16, 2014

I have the following structure and want to use lambda expressions with it, but an exception occurs:
 
class SuperClass // (package private)
public class SubClass extends SuperClass // in same package as SuperClass
  
I have a functional interface (a listener), which has one argument of type SubClass.
 
public interface MyListener() {
    void myMethod(SubClass e);
}
 
When I use the old-school Java 7 style:
 
addListener(new MyListener() {
     @Override
     public void myMethod(SubClass e) {
         System.out.println(e);
     }
});

Everything works fine! If I use Java 8 lambda expression instead:
 
addListener(e -> {
    System.out.println(e);
});
 
It will throw an exception:
 
java.lang.IllegalAccessError: tried to access class SuperClass

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Oct 17, 2014

I would like to make a database using HTML and Java. I already made something like this using swing. I am just looking for some pointers here. I just started looking into Java Play 2 and I have a feeling this is what I am looking for. JavaEE is very complicated and I have read that it is being phased out. What is your opinion on this?

I want to make a static HTML page and put it on my home network and treat one of my computers as the sever accessing mySQL.

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Nov 18, 2014

My current calculator (currently available on my site) launches your default webbrowser with the CalculatorHistory file allowing you to print through your browser, but I been working on self contain the html page in a the JEditorPane which is great it does what i want, so I started working on the printing side and I am stuck...

The code I have was from a example (modified) but when I run the code I get the following error:

Exception in thread "main" java.lang.IllegalArgumentException: services must be non-null and non-empty
at javax.print.ServiceUI.printDialog(Unknown Source)
at gcclinux.co.uk.PrintReport.main(PrintReport.java:28)

The Line 28 equals to PrintService service = ServiceUI.printDialog(null, 200, 200,printService, defaultService, flavor, pras);

package gcclinux.co.uk;
import java.io.FileInputStream;
import javax.print.Doc;
import javax.print.DocFlavor;
import javax.print.DocPrintJob;

[Code] .....

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Apr 9, 2015

I want to load image in java using Html. it works in neatbeans. But if i create a jar file it not load

URL url = getClass().getClassLoader().getResource("http://www.javaprogrammingforums.com/images/sms.png");
String tab= "<html><table style='width:100%; table-layout:fixed'><tr><td style='width: 30px' rowspan=2 >
<img src='"+ url+ "' width=36 height=36/></td><td font color='#ffffff' style='width: 110px'><font size='4'>
"+namePerson+"</font></td><td font color='#ffffff'>"+myDate+"</td></tr> <tr>
<td font color='#ffffff' style='width: 110px'>"+str1+"</td></tr></table></html>";

jLabel1.setIcon(new ImageIcon(url));// it works
tmodel.addRow(new Object[] {tab}); // not works why

not work in jar file..

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Nov 22, 2014

I am trying to pass parameters from he following HTML file to an applet. the applet is not initializing and the iam getting the following error on the console. I also have both the html file and and the java applet under the same source file in eclipse.

java.lang.NumberFormatException: null
at java.lang.Integer.parseInt(Integer.java:542)
at java.lang.Integer.parseInt(Integer.java:615)
at applet.DisplayMessage.init(DisplayMessage.java:16)
at sun.applet.AppletPanel.run(AppletPanel.java:434)
at java.lang.Thread.run(Thread.java:745)

Here is the html file

<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>

[Code] ....

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