Replace Last Occurrence of a character in a string [duplicate]

Replace Last Occurrence of a character in a string [duplicate]

This question already has an answer here: Replace last part of string 9 answers I am having a string like this"Position, fix, dial"I want to replace th

OpenCV + Java = UnsatisfiedLinkError

OpenCV + Java = UnsatisfiedLinkError

I need capture a video stream from my USB webcam, for this i use Opencv 2.4.6 for developing in Java. I follow the steps listed in hereI add the "C:\opencv\build\java\x64" dir to my System PATH and include the "opencv-246.jar" file into my

How to display Arabic in PDF created using iText

How to display Arabic in PDF created using iText

I need your help in display the Arabic content and to start the writing from right to left in the PDF sample that I am trying to create. Here is the sample code:public static void main(String[] args) throws IOException { try { Bas

How threads work in Java and how their working is different from basic code inside a method?

How threads work in Java and how their working is different from basic code inside a method?

Basically this code has two threads created in two classes, and they are called from the third class. Each thread has a loop, and it sleeps after each iteration.(code is in the end)The output is:CHECK 0 CHECKCHECK 1 CHECKrun onein thread1 C

Combine whitelist and blacklist in java regex expression

Combine whitelist and blacklist in java regex expression

I am having problems constructing a regex that will allow the full range of UTF-8 characters with the exception of 2 characters: '_' and '?'So the whitelist is: ^[\u0000-\uFFFF]and the blacklist is: ^[^_%]I need to combine these into one ex

h:commandButton is not working once I wrap it in a

h:commandButton is not working once I wrap it in a

The reason why the topic has "kind of" is because I have an example in JSF 2.2 where I use a commandButton and call a bean function twice (depending on the url). It's basically the same code, which executes only in one example.Here's the co

Java: How do you read each line of a text file and setting each line as an array element?

Java: How do you read each line of a text file and setting each line as an array element?

I am trying to read questions that are listed in each line of a text file and then adding each line to an array, so that they can be called individually later on. I'm almost positive it is possible to do in Java but I am unsure how to do it

Error setting expression 'spa.amount' with value '[Ljava.lang.String;@10dd65e' )

Error setting expression 'spa.amount' with value '[Ljava.lang.String;@10dd65e' )

I am trying following code to get data in spa object fields. Thus, I am using the following code but it is showing null values and giving the following errorError setting expression 'spa.amount' with value '[Ljava.lang.String;@10dd65e'ognl.

how to keep the unfiltered data in the collection in Java 8 Streaming API?

how to keep the unfiltered data in the collection in Java 8 Streaming API?

My Input Sequence is : [1,2,3,4,5]Result should be : [1,12,3,14,5]That is even numbers are incremented by 10, but odd values are left intact.Here is what I tried:public static List incrementEvenNumbers(List arrays){ List temp =

Add toggle button to the menu to stop and start service

Add toggle button to the menu to stop and start service

I am trying to enable the user to stops and starts service which I am implementing from the Menu where the text is will be changed when he clicks it so I want to add ToggleButton as option in the menu tool but nothing is being display in my

Giving an url, that redirected is a url with spaces, to Jsoup leads to an error. How resolve this?

Giving an url, that redirected is a url with spaces, to Jsoup leads to an error. How resolve this?

Hello I have to parse pages wich URI is resolved by server redirect.Example:I have http://www.juventus.com/wps/poc?uri=wcm:oid:91da6dbb-4089-49c0-a1df-3a56671b7020 that redirected is http://www.juventus.com/wps/wcm/connect/JUVECOM-IT/news/p

What happens when an object is assigned to another object

What happens when an object is assigned to another object

public class DrumKitTestDrive {/** * @param args */public static void main(String[] args) { // TODO Auto-generated method stub Echo e1 = new Echo(); Echo e2 = new Echo();// **e2 = e1;** int x=0; while( x 0){ e

How do covariant parameter types work in java

How do covariant parameter types work in java

Given that Date has a method called "after(Date)" and Timestamp has a method the overrides it called "after(Timestamp)", why is the after method in Date called in the following code?The question as to the unexpected results was asked here.

strange 'out' variable, System.out.println()

strange 'out' variable, System.out.println()

Following is the code from java.lang.System class (JDK version 1.6) public final static PrintStream out = nullPrintStream(); //out is set to 'null'private static PrintStream nullPrintStream() throws NullPointerException { if (currentTime

In the System.java source, the standard input, output and error streams are declared final and initi

In the System.java source, the standard input, output and error streams are declared final and initi

public final static InputStream in = null; public final static PrintStream out = null; public final static PrintStream err = null;But as we very well know, these streams are connected to the console by default and already open. There

Why Final variable doesn't require initialization in main method in java?

Why Final variable doesn't require initialization in main method in java?

When I am just trying to do some program in Java.I try to use final variable,I know that final variable must be initialized at the time of declaration, but inside the main method it accepts the final variable with out initialization. I don'

Java SimpleDateFormat returns unexpected result

Java SimpleDateFormat returns unexpected result

I'm trying to use SimpleDateFormat of Java to parse a String to date with the following code.public class DateTester { public static void main(String[] args) throws ParseException { String dateString = "2011-02-28"; SimpleD

Stream and the distinct operation

Stream and the distinct operation

I have the following code:class C{ String n; C(String n) { this.n = n; } public String getN() { return n; } @Override public boolean equals(Object obj) { return this.getN().equals(((C)obj).getN()); }

Adding hours, minutes, seconds to SQL Date

Adding hours, minutes, seconds to SQL Date

Good Day!I have a problem with SQL Dates. I think the main problem is on the perspective of time.In my program, I have a start and end date, say for example 2014-01-08 and 2014-01-10.In the datebase, I used datetime so the dates are stored

Get frames from camera's phone in android

Get frames from camera's phone in android

I would like to get frames from camera's phone. So, i try to capture video and i use matlab to find frames per second of this video, i got 250 frames per 10 seconds. But when i usepublic void onPreviewFrame(byte[] data, Camera camera) {}on

Java class “cannot be resolved to a type”

Java class “cannot be resolved to a type”

This is the error I'm getting:Exception in thread "main" java.lang.Error: Unresolved compilation problem: TeamLeader cannot be resolved to a type at TeamLeadDemo.main(TeamLeadDemo.java:26)This is my code:import java.util.Scanner;pub

Unexpected UnsupportedOperationException on Hibernate validation failure

Unexpected UnsupportedOperationException on Hibernate validation failure

Why am I getting an UnsupportedOperationException from Hibernate upon validation failure? I'm hoping for a ConstraintViolationException.Below is my DAO. When it passes validation it works fine. I'm using Hibernate and Hibernate Validator

Parsing JSON Array using GSON

Parsing JSON Array using GSON

I have a basic JSON with all data contained in an array. One would think that it would be simple to retreive a value out of the array, but after multiple hours of trying every different method of parsing I could think of I'm completely lost

Deserialize multiple Java Objects

Deserialize multiple Java Objects

hello dear colleagues,I have a Garden class in which I serialize and deserialize multiple Plant class objects. The serializing is working but the deserializing is not working if a want to assign it to calling variable in the mein static met

Simple Java regex matcher not working

Simple Java regex matcher not working

Code :import java.util.regex.*;public class eq { public static void main(String []args) { String str1 = "some=String&Here&modelId=324"; Pattern rex = Pattern.compile(".*modelId=([0-9]+).*"); Matcher m = rex.matcher(s