Named Parameters in Java 8 📎
javac -parameters method parameter names are available via reflection.
For example: the parameter names of the method hello:
public class Boundary {
public void hello(String name, int age) {
}
}
become accessible to the following code:
public static void main(String[] args) {
Method[] methods = Boundary.class.getMethods();
for (Method method : methods) {
System.out.print(method.getName() + "(");
Parameter[] parameters = method.getParameters();
for (Parameter parameter : parameters) {
System.out.print(parameter.getType().getName() + " " + parameter.getName() + " ");
}
System.out.println(")");
}
}
}
Compilation with javac -parameters produces the following output:
hello(java.lang.String name int age )
Without the -parameters flag the names are not available:
hello(java.lang.String arg0 int arg1 )