[JAVA][Beginning Java 8 Games Development]

Chapter 9 ■ Controlling Your Action Figure: Implementing Java Event Handlers and Using Lambda Expressions
Figure 9-4. Add in the .setVisible(true) method calls for the splashScreenBackplate and splashScreenTextArea objects
Now you will see that when you use your Run ➤ Project work process, that all of your Button UI controls will do
what they are supposed to do, and will display either a white background for the game or information screens that
have the InvinciBagel splash screen artwork behind them. Now we are ready to learn about Java lambda expressions.
Lambda Expression: A Powerful New Java 8 Feature
One of the major new features that was recently released in Java 8 during 2014 is the lambda expression. Using the
lambda expression can make your code more compact, and allows you to turn a method into a simple Java statement
using Java 8’s new lambda -> “arrow” operator. The lambda expression provides a Java code shortcut to structure one
single method interface by instead using a lambda expression.
The Java 8 lambda expression has the same features as a Java method structure, as it requires a list of parameters
to be passed in, as well as the code “body” to be specified. The code that the lambda expression calls can be a single
java statement, or a block of code, containing multiple Java programming statements. This statement (or statements)
will be expressed utilizing the parameters passed into the lambda expression. The basic Java 8 syntax for the simple
lambda expression should be written as follows:
(the parameter list) -> (a Java expression)
You can also create a complex lambda expression by using the curly braces that are used in Java to define an
entire block of Java code statements in conjunction with the lambda expression. This would be done by using the
following format:
(the parameter list) -> { statement one; statement two; statement three; statement n; }
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