Verify your understanding of the grammar, object-oriented programming, exceptions, and collections covered in the Java Programming Proficiency Test Grade 2 with 60 multiple-choice questions in the ...

"The program suddenly crashed... the cause was a NullPointerException.""Is error handling just about writing try-catch blocks everywhere?"One of the things that troubles Java programmers the most is ...

Creating simple data classes in Java traditionally required substantial boilerplate code. Consider how we would represent Java’s mascots, Duke and Juggy: public class JavaMascot { private final String ...