Weird output from Array program

[zniightmare]

Hi, I was just curious to why I am receiving a weird output.

Output:
GradeBook@5a8a0d5d

import java.util.Scanner;

public class GradeBook {

	private char[] letterGrade = new char[5];
	private String[] studentNames = new String[2];
	private double[] scores1 = new double[5];
	private double[] scores2 = new double[5];
	private double[] scores3 = new double[5];
	private double[] scores4 = new double[5];
	int count = 0;

	
	Scanner keyboard = new Scanner(System.in);

	public void enterInformation(){
		for(int i = 0; i < studentNames.length; i++){
		System.out.print("Enter name of Student: ");
		String name = keyboard.nextLine();
		System.out.print("Enter student's 1st Test Score: ");
		double score1 = Double.parseDouble(keyboard.nextLine());
		System.out.print("Enter student's 2nd Test Score: ");
		double score2 = Double.parseDouble(keyboard.nextLine());
		System.out.print("Enter student's 3rd Test Score: ");
		double score3 = Double.parseDouble(keyboard.nextLine());
		System.out.print("Enter student's 4th Test Score: ");
		double score4 = Double.parseDouble(keyboard.nextLine());
		addStudent(name, score1, score2, score3, score4);
		}
	}
	
	public String toSting(){
		StringBuilder z = new StringBuilder();
		for(int i = 0; i < studentNames.length; i++){
			if(studentNames[i] == null)
				continue;
			z.append("Name: " + studentNames[i] + "\n" +
					"Average score: " + getAverage(i) +
					"\n" + "Grade: " + letterGrade[i] + "\n");
		}
		return z.toString();
	}
	
	
	private void addStudent(String name, double score1, double score2, double score3, double score4){
			studentNames[count] = name;
			scores1[count] = score1;
			scores2[count] = score2;
			scores3[count] = score3;
			scores4[count] = score4;
			letterGrade[count] = getLetter(count);
			count++;
	}
	
	
	private double getAverage(int count){
		
		double score1 = scores1[count];
		double score2 = scores2[count];
		double score3 = scores3[count];
		double score4 = scores4[count];
		double average = (score1 + score2 + score3 + score4)/4.0;
		return average;
	}
	
	private char getLetter(int counter){
		
		double average = getAverage(counter);
		char letter = 'z';
		
		if(average > 89.0)
			letter = 'A';
		else if(average > 79.0)
			letter = 'B';
		else if(average > 69.0)
			letter = 'C';
		else if(average > 59.0)
			letter = 'D';
		else 
			letter = 'F';
		
		
		return letter;
	}
	
	public static void main(String[] args) {
		GradeBook testing = new GradeBook();
		testing.enterInformation();
		System.out.println(testing);
	}
	
}

[zniightmare]

just trying to figure out what this mean exactly. Tried searching in google but I have not found anything.

[adjit]

I believe that is the spot in memory where what you are trying to print belongs. It isn't the actual things within an array.
Like if I try System.out.print(x) and x is an array it will give me some funny looking thing like that
but if I print System.out.print(x[i]) it will print the value at that index