Objects & Classes - Beginner question

[jonytek]

Ive just started a programming course but i have entered a semester behind so im rushing to catch up. My question is why is this not printing the correct name, phone and id????

Class file

public class Student {
		private String name;
		private String phone;
		private String studNo;
		
		public Student(String name, String phone, String studNo){
			this.name = name;
			this.phone = phone;
			this.studNo = studNo;
		}
	public String getName(){
		return this.name;
		
	}
	public String getPhone(){
		return this.phone;
		
	}
	public String getStudNo(){
		return this.studNo;
		
	}
	
	
}

Test file

public class StudentTest {
	public static void main(String[] args){
		Student s1, s2;
		
		s1 = new Student("Jony", "042", "123");
		s2 = new Student("Michael", "123465", "98765");
		
		System.out.println(s1);
		System.out.println(s2);
		
		
	}
}

The out put is -Student@3ae48e1b
Student@732dacd1


also if i change the phone and studNo to int it gives me this error msg - "The constructor Student(String, String, String) is undefined"

[Eranga]

s1, s2 are objects, and you just print them.

Think like this, object is just a blue-print of your class with all the information you have. So you have meaning of it with the individual properties.

[Eranga]

To retrieve the information you've to call the public accessors. For example, if you want to display the name of the student s1,

System.out.println(s1.getName);

Do you about what the dot operator does?

[jonytek]

Ahhhh. Thakyou..

I altered it so it read:

System.out.println("Name: " + s1.name + " Phone: " + s1.phone + " Student number: " + s1.studNo);
System.out.println("Name: " + s2.name + " Phone: " + s2.phone + " Student number: " + s2.studNo);

Thanks Eranga.

[Eranga]

You are welcome. :)

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