Can someone please explain what I am doing wrong?

Object creation Create an object of Student' class and call display function. Output Object created successfully display function called successfully + Test Case(s) Default Score Weight: 100% Compiler: Java Student.java Student.java entrypoint.cz 1 import java.util.*; 3. public class Student { public static void main(String[] args) { Student s = new Student(); s.display(); class Student { public Student() { System.out.println("Object created successfully"); public void display() { System.out.println("display function called successfully"); } 15 16 } + Add Custom Test Case OUTPUT CODE REVIEW COMMENT A Error Student.java:6: error: cannot find symbol s.display(); symbol: method display() location: variable s of type Student Student.java:7: error: class Student is already defined in package unnamed package class Student {