How to allow variables being set only once in java

You should generally use the builder pattern for cases like this:

MyClass instance = (new MyClassBuilder())

Your builder object lets you set all the fields and options you like, but the MyClass instance that it builds does not.


I have a simple executable Jar file. How I can set icon for this file? In my case I use the standard Jar icon which I would like to change.

Is there a compiler optimization for the size() methods of Collections in Java? Consider the following code: for(int i=0;i<list.size();i++) ...some operation..... There is a call to ...

How to build the following PSQL query to update multiple records using jOOQ 3.10.x? UPDATE users SET name =, city = FROM users_staging s WHERE =;

I would like to parse two separate strings "1982" and "SEP" into a java.time.YearMonth object. java.time.YearMonth.parse("1978 SEP", java.time.format.DateTimeFormatter.ofPattern("yyyy LLL")) gives ...