l have a table without a Primary Key or Unique Key column. I need to manipulate this table from the Spring application by using JPA and Hibernate. While I was trying to map this table’s entity, it fails because there’s no @Id mapping. I tried to make a composite id from all the entity properties to ensure uniqueness, but in
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I am running the same servlet application in both Apache Tomcat and GlassFish servers. I wanted to see the ServletConfig and ServletContext implementation class names. Surprisingly, I found that GlassFish is also using from Apache Tomcat’s catalina classes. Is my observation correct? If yes, why isn’t GlassFish using its own servlet implementation classes? [ Answer According to this FAQ entry
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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 1 year ago. Improve this question I’m stuck at the printf statement. Can anyone tell, what’s the right syntax
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I am new to Java and learning through a task. I have tried to create a program but when I input my name it is raising a InputMismatchException exception. Here is my code: Name.java Answer Your problem is not with vector, it is with scanner methods; you can read this answer, it will give you a good idea about how
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Can you please help me to get the jar file for WebLogic exporter “https://github.com/oracle/weblogic-monitoring-exporter#Configuration” . I am new to java packaging and tried many times with maven install command it is giving plugin missing error. Can you please help me with the jar file or steps Compile with java 7 or above Error Answer I was able to fix this
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I’m making a game right now and I’m trying to setup a CreatePlayer method. In the main class, I take the Player class as an object to get its variables, methods ect. The 3rd parameter of Player is the Position, which is an array. The problem I’m having is that I’m not sure how to set each element of the
For restfulness, should I use one method for different get requests or seperate them
I am making a Blackjack rest service, and currently have 4 GET endpoints: /hit /stand /double down /surrender I could also make just 1 POST/PATCH endpoint that uses a dto to send a move, or should I …
How to count records from database and put them into List,each row represent by the letter?
I need to take values from a database and put them into a List<Long>. I made a native query but it doesn’t work correctly. Here’s a picture of the column on my database: I need to count the same statuses (“W” and “I” represent the same status but are represented by another letter). I prepared a query as shown below: