Questions tagged as 'java'

Tagged questions
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Recover user name and email in NavigationDrawer?

How do I retrieve the name and email of the logged-in user? It is giving code error. I am using BD Firebase. public class MenuActivity extends AppCompatActivity implements NavigationView.OnNavigationItemSelectedListener { private T...
asked by 18.04.2018 / 17:52
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How can I kill a Thread

I would like to know how to kill a thread. public class thread { private static void metodo(){ new Thread(){ @Override public void run(){ while(true){ System.out.println(...
asked by 14.04.2018 / 18:04
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(JAVA) Error in foreach

Why does an error occur in executing the code below if I remove the break? The value of the ArrayList client is not updated every time it completes the? for (Cliente cliente : clientes) { if (identificacao==cliente....
asked by 15.04.2018 / 19:36
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How to list all JSONArray data using JSF?

I'm having trouble listing all the JsonArray data in a JSF , always only the last value, since when I use System.out.println(variavel) I can list everything without problems. JSF page that needs to receive the data <?xml v...
asked by 13.04.2018 / 01:09
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Reflect caching java, how to do?

If I can instantiate a new object with reflection, how can I make caching for the type it belongs to? newInstance() returns a type Object but I need the primary object, which I can get the type by name. But I want to deal with...
asked by 13.04.2018 / 14:20
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Error deserialize JSON - How to solve?

I'm using jpa and I have these two entities: @Entity @JsonIdentityInfo( generator = ObjectIdGenerators.PropertyGenerator.class, property = "id") public class Categoria implements Serializable { @Id @GeneratedValue(strategy = Gene...
asked by 28.04.2018 / 22:45
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Android style menu bullet in RecyclerView item

First of all I already have an intermediate knowledge about android and I already have some applications in google play. Recently I was updating the layout of my application, I have a video gallery in my app that whenever I need to delete an...
asked by 09.06.2018 / 22:09
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Doubt regarding join with multiple tables

I have a sales class and it receives many products (manyToOne) and client (oneToMany) and would like to put everything together into a join to make a report with just the information you want. I tried to venture to implement but gave 500 Erro...
asked by 28.04.2018 / 17:58
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I can not save form using spring boot

I'm starting to study spring boot now and trying to do a CRUD, but I'm having trouble saving my form. No error message appears, neither in the console nor in the browser. I will revert code and do not find the error, can anyone help me? My us...
asked by 20.05.2018 / 19:20
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General Game in Java

Good afternoon guys, I'm doing the General game (of data in Java). I am in doubt on how to compare the data between them. Sequence Possible sequences: 1-2-3-4-5 / 2-3-4-5-6 / 3-4-5-6-1 Number of points: 20 Full-Hand The number x in 3 data...
asked by 18.05.2018 / 21:21