Input from the user in an object array in java

I have a problem putting input data from the user inside an array. The program should fill these arrays and show me the desired student. Here's the code:

    package sorting.test;
import java.util.*;
public class SortingTest {
    String name;
    int grade;
    public SortingTest (String name, int grade) {
        this.name=name;
        this.grade=grade;
    }
    public String getname() { \\<
        return name; \\<
    }
    public int getgrade() { \\<-- Are these returns necessary?
        return grade; \\<
    }
    public static void main(String[] args) {
        Scanner in = new Scanner (System.in);
        System.out.println("Total students: ");
        int n,i;
        n=in.nextInt();
        SortingTest [] x = new SortingTest [n];
        for (i=1;i<=n;i++) {
            System.out.println("Student "+i);
            x[i].name=in.next(); //Gives an error when I try to put an input
            x[i].grade=in.nextInt();
        }
        System.out.println("Show infos of student: ");
        i=in.nextInt();
        System.out.println(x[i].name +" " +x[i].grade);
    }
}

In another program I solved this problem by just doing this

x[i].something=in.nextType();

to

something=in.nextType();
x[i]=new ArrayType (x);

It doesn't seem to work here. The error that I got after writing the name is

Exception in thread "main" java.lang.NullPointerException
    at sorting.test.SortingTest.main(SortingTest.java:24)
C:\Users\Anthony\AppData\Local\NetBeans\Cache\8.2\executor-snippets\run.xml:53: Java returned: 1
BUILD FAILED (total time: 10 seconds)

Also I wanted to know if these returns that I marked are necessary, I can't understand their usefulness, just following my professor examples.