I have IntelliJ IDEA and other JetBrains products installed and they worked great (PyCharm, Android Studio, Clion, WebStorm) till today, now I just get opening message: Error launching Intellij Platform – Error invoking main method I have installed: C:Program FilesJavajdk1.8.0_25 C:Program FilesJavajre1…
Tag: java
JavaFx equivalent of Swing JFrame
I am learning JavaFX. I have encountered a problem; I cannot figure out what is the equivalent of a Swing JFrame in JavaFX. Is it the Scene or the Stage? Answer The equivalent of a Swing JFrame in JavaFX is the Stage class which extends from Window and can be made visible by calling show() method. The Scene i…
Doing a beginner’s course on Java, having problems with do-while and if-else loops, as well as string validation
I’m doing a beginners course on Java, and there is no one currently I can ask for help. The program is simple, you put in your details and the program will offer you a price quote for car insurance. The program is supposed to give quotes to those between the ages of 18 – 70. Out with that the prog…
JRE issue with getting Spring Tool Suite installed
I downloaded Spring Toolset 3.6 from here: Unzipped it, launched sts.exe and got this error: I have following version of (32 bit) java I tried adding the following 2 lines to the top of the STS.ini: and got this error: Tried adding an Env variable: …same error when I opened up the Java Control panel, I …
How to avoid two different threads read the same rows from DB (Hibernate and Oracle 10g)
Let’s suppose I got two different threads, T1 and T2, accessing concurrently the same database and fetching data from the same table. Now on thread startup I need to fetch data from the table and store the rows into a collection, that I will then use to perform some work elsewhere. I don’t want th…
Can we create a mocked instance of java.lang.Class with PowerMock?
I need to write a test that mocks a instance of the java.lang.Class class. Is this possible via PowerMock? I tried to do following: And the result is: According to the documentation of PowerMock this should be possible but still I get this error. Did someone manage to do this? Edit: Why do I need this? In the…
Spring boot not executing schema.sql script
I’m developing a Spring Boot web application and want to create a MySql database if it’s not already created. So I’ve done a dump of my current database in order to have an empty schema of it. Put it in /src/main/resources, so maven brings it to /WEB-INF/classes when building the war file. T…
Spring MVC request and response flow explanation
I can’t find correct client request flow in below syntax.Could someone please clarify what is happening here? If possible please specify what are the corresponding spring classes/interfaces used in spring MVC process. Answer Request will be received by DispatcherServlet. DispatcherServlet will take the …
Maven: No sources to compile
I am following the ‘Build Java Projects with Maven’ (https://spring.io/guides/gs/maven/#scratch) and when I run ‘mvn compile’ from /Users/Misha/Desktop/src/main/java/hello, I get this prompt: I have the two java files and the xml file in the hello directory, and I am assuming that I sh…
Java checked exceptions
I’m trying to understand checked exceptions in Java and have the following query. Is the following correct: If a method has the potential to throw a checked exception, of any type, that exception must either be declared using the throws keyword, or caught by the respective method. If the above is correc…