Q & A Coding

Difference between null, empty, 0 and false

By adminPosted on April 1, 2023

Question : The goal Differentiate day-to-day usage of null , empty , 0 and false . The problem Coping with […]

By adminPosted on April 1, 2023

Question : I want to specify the exceptions, not this generalized way, however, item.write only accepts Exception e public File […]

By adminPosted on April 1, 2023

Question : I’m developing an application that manages courses. The student, when entering the inscription screen and clicking on the […]

By adminPosted on April 1, 2023

Question : We are migrating our version control from Subversion to Git. Master , Develop and Master : Develop > […]

By adminPosted on April 1, 2023

Question : I have 3 tables TB_ContratoCotista: TB_Contract: TB_Cotist: I would like to relate the values of the TB_Contract table […]

By adminPosted on March 31, 2023

Question : I asked the same question in SO Gringo too . I’m doing a search form ( action=GET […]

By adminPosted on March 31, 2023

Question : I would like to know if there is a way to generate a JLabel or JTextField in the […]

By adminPosted on March 31, 2023

Question : I have a question about how to replace IF with polymorphism. I’ll give you the following example: Let’s […]

By adminPosted on March 31, 2023

Question : I have 4023.8599999999997 € to round to 4023.86, I tried: Math.round(sum1) but the result was: 4024 € I […]

By adminPosted on March 31, 2023

Question : I have to do a function and I am not able to develop logic. It is as follows: […]