I am using IntelliJ IDEA 15.0.2 as an IDE. I have created a Grails 3.0 application and changed it a bit to configure PostgreSQL. Here is my dataSource: And in my build.gradle I added runtime “postgresql:postgresql:9.4-1207.jdbc4”. But that gives errors when I run: What have I missed? Answer Data s…
Tag: java
Jackson – Custom TypeId Resolver
I’ve been using a custom typeId resolver for one of my classes, so far I’ve been leaning on the annotation support: But now I need to customize the creation of the type resolver by passing some other dependencies to it via constructor or setters, and since Jackson is the one who instantiate it I c…
Display classes containing deprecation Android Studio
I updated my project to the latest Android APIs and the project now has multiple deprecated methods. Does Android Studio have a cool way of listing all classes containing said methods, such as the TODO window? I know I can go through every class and search methodically through the code, but I would rather lik…
Convert 2 chars to a string
I have 2 chars I need converting to a string. I can convert one no problem but how do I turn 2 randomly generated chars into one string? Here is my code so far, the aim of my program is to generate two chars at random and return them: Answer A String concatenated with a char is a String1. So
Cleaning up after changing the isolation level in JPA / EclipsLink EntityManager
I’m performing a transaction in JPA (EclipseLink) using a custom transaction isolation level, which I set on the underlying connection of the JPA EntityManager using this code: If I try to reset the isolation level to the old value after having committed the transaction, the underlying connection is nul…
When creating a Java class in IntelliJ: is there a wizard/menu to select the package and class to extend from?
One of the features I like of Eclipse is that when creating Java classes, a wizard is available to specify different properties for the class. Like its package, class to extend from…etc (see below in the screen cap). Does IntelliJ provide something similar? I created a class but the process wasn’t…
Anchor-like functionality in Vaadin to jump/scroll to a certain point
Is there a way in vaadin to scroll or jump to a certain point (e.g. a Label) inside a view (e.g. a Panel)when a button or link component is clicked? Similar to the anchors functionality on a website? I’m using Vaadin 7.5.9 EDIT: I have a HorizontalSplitPanel. Its first component is a list of items where…
Jackson deserialization issue for ZonedDateTime
I’ve the following field in a class I use during deserialization of a service that I’m consuming. The service I’m consuming may return a Date or DateTime using the pattern: yyyy-MM-dd’T’HH:mm:ss.SSSZ Let me give 2 examples of what the service returns: 2015-11-18T18:05:38.000+0200…
How to stop and start Appium server programmatically using Java?
How can I perform launching and stopping my server using Java code? Currently I am doing this process manually. Answer There are 3 ways to achieve the scenario. 1)Using AppiumDriverLocalService 2)Using Appium.js with Node.exe 3)Start Appium server using Command Prompt I found it helpful.Hope it helps. Source:…
java command accessing text files
I want to run my project in the command line with the java command but I get an error, input.txt (no such file or directory) In my program I am reading from the file input.txt and when I compile and run the program from eclipse it works completely fine without any problems, but with the java command I keep on