Java compilation error creating a reversed comparator
Here is a code snippet which is throwing an weird compilation error in Java 8 at line number 2.List<Employee> employees = getEmployees();/*Line no:2*/ Comparator<String> comparator =...
View Articlejava Swing application pixelated
I have developed a Swing application in Java and packaged it into a JAR file. When I execute the JAR file from the command line usingjava -jar swingApp.jar, the application clarity is crisp and clear....
View ArticleProper way of concatenating lists with single elements in a single logical...
In my code, I have this : private static final List<String> a = new ArrayList<String>() {{ addAll(b); addAll(c); add(d); add(e); }};I read in some places that the double-braces syntax...
View Articleopenapi-code-generator 3.3.4 does not read the tags and API class name is not...
I have below openapi document. I expected the API class name to be generated will be SampleApi because the operation "/hello" is tagged with "sample"tags. But it is generating the API class name using...
View ArticleSorting List of Strings containing special characters in it [closed]
I have a list of CustomObject entities. The CustomObject contains a property called name.It may contain names like the belowpublic.a_b answer.c_dpublic.a_danswer.c_aanswerI want to sort the list of...
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Java 8 to Java 11 migration issues with JAXB API
We are in process of migrating our projects from Java 8 to Java 11. One of the APIs is dependent on a library that utilizes JAXB. As we know JAXB was removed from JAVA 11 we started to include the JAXB...
View ArticleUpgrading a Spring Boot project from JDK 8 to JDK 11
I'm trying to upgrading a Spring boot application from JDK 8 to JDK 11 and I made the following changes:1.Use java.version in...
View ArticleSpring 3.2 with Java 7 and Java 8
I have read following questions related to Spring 3.2 and Java 8 compatibility issues but i still have few open questions.Java 8 Spring compatibilityspring-core 3.2.9 + java 8Spring 3.2.x with Java...
View ArticleHow to read from txt file via filereader and write a modified?
I have to read a txt file via filereader and make a censoring by removing all words starts with "c" and "C" and write it by creating a new txt file as censored. I have done below, but I need to make...
View ArticleCADES-T signature Java8
I am developing a Java application (version 8) that will call a SOAP WS. It has the following input parameter:<![CDATA[<?xml version="1.0" encoding="UTF-8" standalone="yes"?><ns2:mensajeWS...
View ArticleIn my project I found this exception...
I'm using Apache Tomcat 6.0.32 and JDK Amazon Corretto 1.8.0? I'm trying to execute a new Jakarta EE Web Application Template with IntelliJ...
View ArticleGroovy Test cases not running after java upgrade from j8 to j17
As part of java17 upgrade updated the dependency version for the below plugins: maven-surefire-plugin >> from 2.19.1 to 3.0.0-M3 spock-core >> 1.0-groovy-2.4 >> 2.2-M1-groovy-4.0...
View ArticleHow to return value of optional after mapping in java 8
I need to get the String value which is the identifier, but this return void instead of string value.How can I return the string value? String previousReadyForHome =...
View Articleoutput of "threadInfo.isInNative()" for main thread [closed]
What will be the output of "threadInfo.isInNative()" for main thread?For me it is giving true. Is that correct?Here is the code that I am running :import java.lang.management.ManagementFactory; import...
View ArticleNull and Empty List Check in Java 8
I want to write an equivalent code for this using Java 8 features of Streams or OptionalMy idea is basically to check if the List has some value returned from a Query or null /emptyif (resultList !=...
View ArticleJsonArray saving along with escape characters in database while using java
I am converting modelObject to JSON string and inserting the same JSON string to JSONArray object. Here is what I am doing.Here jsonArray is of type org.json.JSONArray.Here is a detail list of steps I...
View Articlejava.lang.IllegalArgumentException: Malformed \uxxxx encoding while mvn install
While running mvn install in my project, I end up with this error. While a lot of answers and resources point out errors in / vs \, I want to mention that I have no local changes and this repo just...
View ArticleMessages won't reach the JMS backend in Weblogic JMS (BEA Server)
I'm working in a multi-module project which packaged as EAR files and uses WebLogic V12.2.1.4 as the Application Server. Speaking about the architecture, Communication between the critical modules were...
View ArticleTreeMap mal functioning - Java [closed]
class Ride{ int start; int end; int price; public Ride(int start, int end, int price) { this.start = start; this.end = end; this.price = price; } @Override public String toString() { return "Ride{"...
View ArticleFlattening a List of List to a List with Java 8 stream API
I have the following code which could be much simpler using Java 8 stream API:List<List<String>> listOfListValues;public List<String> getAsFlattenedList() { List<String>...
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