Questions tagged as 'netbeans'

help me, in my program that should put data to a table, it happens that when I give register does not enter the data to the table the error is as follows package registration.client; import java.awt.Image; import java.awt.event.KeyEvent; impor...

Hi, I would like to see if you could help me see what the error really is I do not understand it: Exception in thread "main" java.lang.NullPointerException at formulariomedico.Vista.<init>(Vista.java:89) at formulariomedico.For...