JAVA - Страница 2869

I'm having some problems understanding how the recursion works and i have this question asking me to print a diamond pattern using recursion. after a while i got to something close to the solution i think but my output is this:

* * * * * * * * * *...

Yeah, I know. Long title of question... So I have class name in string. I'm dynamically creating object of that class in this way:

String className = com.package.MyClass ; Class c = Class.forName(className); Object obj = c.newInstance(); How I...

I have sso configured for my application with keycloak and I wish to do single logout. When I call my endpoint for single logout /slo, I got this from the response:

Note: Since your browser does not support JavaScript, you must press the Continue...

I am developing rest APIs in Spring Boot. I am able to do CRUD operations and postman gives correct responses, but when I add Spring Security username and password Postman gives 401 Unauthorized.

I have provided a spring boot security username and...

I'm running a Temporal workflow. and I need to send APM tracing to ELK stack (Elastic)

Elastic provides a java agent elastic-apm-agent to send APM tracing logs to ELK's APM server.

As per my understanding elastic-apm-agent uses OpenTelemetry for...

I have a Java Object that I use part of the ModelandView as below,

Spring Controller:-

@RequestMapping(value = /student , method = RequestMethod.GET) public ModelAndView student() { return new ModelAndView( student , command , new Student()); }...

I tried to print a PDF document from Java using PDFRenderer and ICEpdf. In both cases some of the text came out rotated in 180 degrees while the images stayed correct. With PDFREndere all the text is rotated and in ICEpdf only some of the lines. Any...

My Eclipse worked fine a couple of days ago before a Windows update. Now I get error messages whenever I'm trying to do anything in Eclipse. Just a simple program as this will display a bunch of error messages:

package lab6; public class Hellomsg...

I am using Java Sound to read Audio Stream on my laptop to converse with a bot but it's taking the sound from response of the bot as part of the audio stream, this happens when I am using my device speaker and microphone and works well when I use a...

Problem 1. Draw a visualization of the disjoint-set structure as we did in class for the following p[] array. i= , p =

Problem 2. Suppose link(i, j) is the method as discussed in class that implements lazy linking with height (depth) control...

I am getting a JSON object from google maps and saving to MySQL DB using JdbcTemplate in a longBLOB data type. The format of JSON before saving is:-

{ circle_bound : , count_values : , query_shapes : , query_type : , total_count :1, total_points...

I'm having a problem with webservlet. This is my first project and i don't know what happend but when i start project in server i can't go to /helloworld althought i can connect to my main url this is my class

package quangtoan.controller; import...

I'm currently developing a Java application where I need to dynamically update the contents of a configuration file (env.properties) while the application is running. The configuration file contains crucial values like db.url and db.token, which are...

I am to try catching the exception from a SOAP web service in Spring WS (java) with the follows code:

String faultString = String Y ; String faultCodeValue = Code X ; QName faultCode = new QName( faultCodeValue); SOAPFault soapFault = null;...

For my app, I am trying to pull a fresh location only once to show nearby points of interest. I don't want to pull a cached location because the points of interests are displayed in order of distance from the current location, so the most current...

i'm new in JAVA and Spring boot . i created a spring boot project thene, i created an Entity Class with this code :

package com.example.TEST_WEB; import javax.persistence.*; @Entity @Table(name= users ) public class User { @Id //Strategy =...

I'm trying to read data from a Firestore database. one of which is a Timestamp value. So I have a function to convert into a string. the conversion works for other Timestamps but not this one particularly. I don't know why.

The entire error is...

I'm using ModelMapper to convert from my domain object to DTO.

@Getter @Setter class Pojo { private String a; } @Getter @Setter class PojoDto { private String a; } My controller returns Page and my service layer returns Page, so the controller...

IM trying to call postgre sql function from java but im getting @sqlcall methods may only return null or Outparameters at present

This Function return list with same id.
`CREATE FUNCTION get_student(id IN INT) AS $$ BEGIN return query select *...

I'm trying to send an email using Spring Boot. However, I get the error below in the console. I try the whole thing with GMX as email provider

Servlet.service() for servlet in context with path [] threw exception with root cause...

I made an application to find the key using coordinates. Everything seems to be working, but the notification of the location does not come. I made the notification using the Toast class. Here is the code:
MainActivity:

private TextView...

Apologies if I have overlooked something: is there a way to get the length in twips or points of the text that is held in an XWPFParagraph. I could achieve it using Font And FontMetrics separately but that seems clunky. Any help will be much...

I am trying to run wordcount script using Java in apache spark installed locally. for that i am getting below mentioned error. Tried with multiple solution/blog but still getting same error.

Here is My ** Controller code **.

package...

This is an exercise question in the book. The title is to design a simple employee information system that can input data and display the input data. An extension of this exercise requires me to design an save option to output the objects in the...

I am new to Java and Java Swing but it is what I inherited. I am trying to figure out the best way to keep a combobox up to date with a changing list. If the user has already selected an item and that item is still in the new list I want to keep it...