Notice, we have three examples below: Sending the Role as String, and the class is accepting it. Sending the Role as ArrayList and HashMap and in both the cases Class is accepting it. Only thing is ...

To illustrate how generics are used in the Java Collections Framework, let’s look at some examples. List and ArrayList with generics. In the above example, we already briefly explored a simpler ...

Please see the test cases in src/test/java. There are two test classes FruitBoxTest.java & FruitBox2Test.java There is a test classes for Wildcard Type : FruitBox3Test.java public class FruitBox4 { ...

Using generics results in more robust code and avoids ClassCastExceptions in your Java programs. This in-depth tutorial introduces you to generics and their types and methods.

Java Coding Samples. Various Java programs to illustrate various concepts. A Hello World! Java program. Calling Methods. A sample of how to call methods in the same class. For loop. A simple example ...