In this HackerRank Java Reflection problem in the java programming language, you will be given a class Solution in the editor. You have to fill in the incompleted lines so that it prints all the methods of another class called Student in alphabetical order. We will append your code with the Student class before running it. 


HackerRank Java Reflection - Attributes problem solution


HackerRank Java Reflection - Attributes problem solution.

public class Solution {
    public static void main(String[] args) {
        Class student = Student.class; // uses class literal, not a function.
        Method[] methods = student.getDeclaredMethods();

        /* Get names from Methods */
        ArrayList<String> methodNames = new ArrayList<>();
        for (Method method : methods) {
            methodNames.add(method.getName());
        }
        
        /* Sort and print names */
        Collections.sort(methodNames);
        for (String name: methodNames) {
            System.out.println(name);
        }
    }
}


Second solution

public class Solution {
        public static void main(String[] args){
           Class student = Student.class;
            Method[] methods = student.getDeclaredMethods();

            ArrayList<String> methodList = new ArrayList<>();
            for(Method method : methods){
                methodList.add(method.getName());
            }
            Collections.sort(methodList);
            for(String name: methodList){
                System.out.println(name);
            }
        }
    }