I had written a code to show a billboard program and I wanted to prevent the system from crashing by using an IndexOutOfBoundsException when users enter an invalid choice. I can’t seem to get it to run properly. Here is what I have: Here is my error: Exception in thread “main” java.lang.Runt…
IntelliJ Idea IDE using port 1099
I’m using IntelliJ Idea Community Edition IDE and I’m trying to run a Maven WebApp with Jetty by command line. I’m on a RedHat box I run this command: And I get this error: The funny thing is that when I close IntelliJ Idea, the 1099 port is released. I can’t find the reason why and ho…
How can I solve Java JLabel issues in application? [closed]
Closed. This question needs debugging details. It is not currently accepting answers. Edit the question to include desired behavior, a specific problem or error, and the shortest code necessary to reproduce the problem. This will help others answer the question. Closed 8 years ago. Improve this question I am …
%Like% Query in spring JpaRepository
I would like to write a like query in JpaRepository but it is not returning anything : LIKE ‘%place%’-its not working. LIKE ‘place’ works perfectly. Here is my code : Answer The spring data JPA query needs the “%” chars as well as a space char following like in your query, …
Spring Security 3 – always return error 302
I use Spring 4 to create a simple application. Recently, I’m adding Spring Security 3 to the project but always get the Error Code 302 ( so it redirect to home page always ). Here is my SecurityConfig: I have a Controller called AccountController: My WEB-INF structure: The flow is like: User access the …
Source code has comments after decompile whith JD-GUI
I have converted class files into source code by JD GUI Tool. I open the jar file using JD-GUI version 0.3.5, then open File folder and click “Save All Sources”. There are comments in source code, e.g.: How can I remove those comments? Answer Change the setting under Help > Preferences and unch…
Postgres – Column out of range in PreparedStatement – java
got a problem with a preparedstatement using Java 1.7.0.67 on Windows 8.1… Basically I get an error as follows (from the test): I can see it’s telling me I have no ? but they are there for all to see in the before setString message. Can anyone see what is wrong with what I’m doing – I&…
Can’t instantiate class using Hibernate createQuery
I’m trying to use hibernate to create objects, which are not domain models, but I get a incomprehensible error message. My Java code: The class: Stacktrace: The schema for the table: Versions: Frankly, i’m clueless about why it cannot instantiate this class. Answer You get a NullPointerException i…
Spring Boot + JPA : Column name annotation ignored
I have a Spring Boot application with dependency spring-boot-starter-data-jpa. My entity class has a column annotation with a column name. For example: SQL generated by this created test_name as the columns name. After looking for a solution I have found that spring.jpa.hibernate.naming_strategy=org.hibernate…
How to return a string which matches the regex in Java
Here is a method which returns true/ false for each match. Instead I want to get the matched string if it matches. If it doesn’t matches then don’t return. I can have an If condition to check if its true or false. But my specific question here is, how to return the string if it matches? Answer How…