For tests purposes, I want to create and fill some tables using SQL scripts as well as CSV files. So I created a SQL script like this one: The foo.csv file exists, and is located in src/test/resources. When this script is run on Eclipse (where src/test/resources is defined as a source directory and thus is in…
Why is Lucene sometimes not matching InChIKeys?
I have indexed my database using Hibernate Search. I use a custom analyzer, both for indexing and for querying. I have a field called inchikey that should not get tokenized. Example values are: BBBAWACESCACAP-UHFFFAOYSA-N KEZLDSPIRVZOKZ-AUWJEWJLSA-N When I look into my index with Luke I can confirm that they …
How do I set an empty list of a certain type
We have Collections.EMPTY_LIST but it is not typed, which shows an eclipse warning. How do I set an empty list of a certain type. Answer Try this See this also Type-safe, generic, empty Collections with static generics
Is there a commonly used rational numbers library in Java?
I’m looking for a Java library which represents fractions (rational numbers). For example, if I want to store the fraction 1/3 then it will not be saved as 0.33333 which will lose its accuracy. Here …
How to configure the jdk14 logging’s pattern
I guess I can chnage pattern by adding the line java.util.logging.ConsoleHandler.pattern, however where to check the pattern information like %u %h etc?
Tool for java.lang.OutOfMemoryError: Java heap space , Java Swing Application
I am working with a Java Swing Application. I am getting java.lang.OutOfMemoryError: Java heap space. I am not able to figure out which method is creating many objects or if there are any not needed …
How can I count the number of occurrences of a simple pattern in a string?
For this question, a “pair” in a string is defined as a situation where two instances of one character are separated by another character. So in “AxA” the A’s make a pair. Pairs can overlap, so “AxAxA”…
Protected in Interfaces
Why are all methods in an interface definition implicitly public? Why does it not allow a protected method?
What’s the advantage of load() vs get() in Hibernate?
Can anyone tell me what’s the advantage of load() vs get() in Hibernate? Answer Whats the advantage of load() vs get() in Hibernate? load() get() Only use load() method if you are sure that the object exists. If you are not sure that the object exist, then use one of get() methods. load() method will th…
How can i sort a string without using sort() method in java?
I want to sort a string “computer” -> “cemoprtu”, but without using Arrays.sort(string). Answer Looks like you need to sort the characters, so I’d start with