Please help to sort out the error

[Hetul Sheth]

Q:  Ask the user to input N student record (maximum of 20 records) with their id, name, course and year. Write a program to create an array try to perform the following operations. A. Search students by id B. Search by course C. Delete by id Allow the user to perform operations a to c as often as possible. (Use Switch Case)


LINE WHICH ERROR IS THERE IS SHOWN BELOW
Ans:

import java.util.Scanner;
class Details
{
    Scanner sc = new Scanner(System.in);
   
    int No_of_student = sc.nextInt();
    int[] a = new int[21];
    int[] id = new int[21];
    int[] year = new int[21];
    String[] name = new String[21];
    String[] course = new String[21];
    public void EnterDetail()
    {
    
    //Scanner sc = new Scanner(System.in);
    
    for(int i=0;i<No_of_student;i++)
    {
        System.out.println("Enter detail for student number "+(i+1));
        id[i] = sc.nextInt();
        name[i] = sc.nextLine();
        course[i] = sc.nextLine();
        year[i] = sc.nextInt();  //SHOWING ERROR HERE
    }
    
    }
    public void Search()
    {
        System.out.println("Enter the way you want to search a student");
        System.out.println("1: Id  2: Course");
        int j = sc.nextInt();
        switch(j)
        {
            case '1':
                System.out.println("Enter the id");
                int search = sc.nextInt();
                for(int i=0;i<No_of_student;i++)
                {
                    if(search == id[i])
                    {
                        System.out.println("Student name: "+name[i]);
                    }
                }
                break;
                
            case '2':
                System.out.println("Enter the course");
                String searchcourse = sc.nextLine();
                for(int i=0;i<No_of_student;i++)
                {
                    if(searchcourse == course[i])
                    {
                        System.out.println("Student name: "+name[i]);
                    }
                }
                break;
        }
        
    }
}
public class Main
{
	public static void main(String[] args) {
	 Details d = new Details();
	 d.EnterDetail();
	 d.Search();
	}
}

[Ganesh Patekar]

Please don't create multiple threads for the same topic. Better continue here