to practice using Java ArrayLists to implement a program that uses multiple classes. (object based programming, encapsulation) to practice implementing individual classes based on a given ...

Type erasure in Java generics programming can cause a variety of problems in your code. Fortunately, there are ways to work around them. Generics programming in Java enhances type safety and code ...

When creating optional user attributes using the declarative user profile feature, the optional attributes get set to the empty string once a user is edited. If one of these attributes is mapped to an ...

Runtime errors occur when something goes wrong in the normal execution of a program. When severe enough, these errors abruptly terminate an application. To help programmers both anticipate and recover ...

Breakpoint condition 'test.get(0).get(0).equals("Work0")' error: Cannot evaluate because of compilation error(s): The method get(int) is undefined for the type Object ...

If you’ve read my Java 101 tutorial introducing static classes and inner classes, you should be familiar with the basics of working with nested classes in Java code. In this associated tip, I’ll walk ...

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