Questions tagged as 'java'

Tagged questions
6
answers

What is the solution to all present, past and future NullPointerException errors?

I have my Java program and I get a NullPointerException and I have seen other questions but they are from people with other programs and it does not work for my program and I want to leave here the 2,000 lines of my program so that you solve the...
asked by 08.01.2017 / 19:54
0
answers

Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException; Error in the translation of an OID in the snmp management entity.

What happens is that when I try to translate the information in the form of Response Event to String I get an exception, I think it's in this method, maybe I'm ignoring something, it's a new class for me, so I do not know it very well; this is t...
asked by 25.11.2018 / 06:59
1
answer

ClassCastException error on Android

When running the following line on android: recyclerView.getChildAdapterPosition(view); Skip the following Exception: java.lang.ClassCastException: android.widget.RelativeLayout$LayoutParams cannot be cast to android.support.v7.widget.Rec...
asked by 24.11.2018 / 17:52
1
answer

Can not convert object of type java.lang.String to type com.funds.abisu.chatfirebase.Messages

Create the database in firebase and I was able to do a single insertion, but when I did it I got the following firebase exception Can't convert object of type java.lang.String to type com.fundamentos.abisu.chatfirebase.Mensaje My mistake is...
asked by 29.11.2018 / 19:50
0
answers

Jcombobox multicolumn

when it is instantiated only, the scroll keys work, but when I include it in a table for its use they stop working some idea how to make it work TableColumn colWithCmb = jTable1.getColumnModel().getColumn(1); colWithCmb.setCellEditor(n...
asked by 29.11.2018 / 07:30
1
answer

Error in the file R.java "; expected "

I'm having a problem in the R.java file. The compiler tells me    error: ';' expected on the following line: public static final int Go!=0x7f080003; I think the file R.java has been generated badly I tried removing the exclamation ma...
asked by 23.11.2018 / 18:44
1
answer

Open txt with java

I need to open a txt file but from the console but from an application that opens txt, in the event of the button you should open the txt as if you were opening from the operating system, I use GNU / linux (Debian) If something serves you sea...
asked by 26.11.2018 / 17:02
1
answer

Error Unsupported major.minor version 52.0 servlet and tomcat

Friends I get this error when uploading my project to the apache tomcat I use apache tomcat 7.0.67 IDE: Netbeans 8.2 with java plataform jdk 1.8 run java EE 6 Web  your help please.     
asked by 21.11.2018 / 22:53
1
answer

How to get the last item in a list? in java

I have a list that I use as a line counter. pressing [ENTER] the list increases by 1 value and I just need to make pressing [BACKSPACE] or delete the last item in the list. and I do not know how to get the last object you know how to do it? This...
asked by 23.11.2018 / 01:38
1
answer

How to store a list of movies?

How would you do to list all the stored movies? Let him create a new variable of the movie class every time. package videoclub; import java.util.Scanner; public class VideoClub { /** * @param args the command line arguments */...
asked by 01.12.2018 / 21:39