new elements in the arraylist

[Anne Saizan]

Hello there,
i just wanna ask , how to enter a new elements in the arraylist?
the new element must be the input of the keyboard.
Thank you.

[harshada patil]

you can use add() method of ArrayList class

for example:

ArrayList a=new ArrayList();
a.add(TextField1.getText());

[Anne Saizan]

thanks for the reply.
can we use add() if the user add new elements using keyboard.

public static void addStudent(int index, ArrayList<Student1> students)
	{
		
		//ArrayList<Student1> students = new ArrayList<Student1>();
		System.out.println("Add a new student");
		Scanner input = new Scanner(System.in);
		//ArrayList<Student1> students = new ArrayList<Student1>();
		System.out.println("Enter your name:");
		String name = input.nextLine();
		System.out.println("Enter your student ID:");
		String studentID = input.nextLine();
		System.out.println("Enter year of birth:");
		int yearofbirth = input.nextInt();
		
		//students.add(new Student1(studentID, name, yearofbirth));
		Student1 StudentList = new Student1(studentID, name, yearofbirth);
		students.add(StudentList);//add created student to arraylist
		//new Student1(studentID, name, yearofbirth);
		//students.get(index);
	}

here is my code. can i do that for this one?

[Anne Saizan]

sorry this is my first time using this forum.
hehe

public static void addStudent(int index, ArrayList<Student1> students) 
{ 

//ArrayList<Student1> students = new ArrayList<Student1>(); 
System.out.println("Add a new student"); 
Scanner input = new Scanner(System.in); 
//ArrayList<Student1> students = new ArrayList<Student1>(); 
System.out.println("Enter your name:"); 
String name = input.nextLine(); 
System.out.println("Enter your student ID:"); 
String studentID = input.nextLine(); 
System.out.println("Enter year of birth:"); 
int yearofbirth = input.nextInt(); 

//students.add(new Student1(studentID, name, yearofbirth)); 
Student1 StudentList = new Student1(studentID, name, yearofbirth); 
students.add(StudentList);//add created student to arraylist 
//new Student1(studentID, name, yearofbirth); 
//students.get(index); 
}

[harshada patil]

please see the link belowhttp://www.java2s.com/Code/Java/Collections-Data-Structure/Storeuserdefinedobjectsinarraylist.htm

[Matthew Brown]

Hi Anne. Welcome to The Ranch!

The short answer is yes. I haven't checked to see if that specific code works, but once you've created an object it makes no difference where it came from when you're adding it to an ArrayList. If you can get a reference to a Student1 object, you can add it

The best approach, though, when you're faced with a question "can I do this" is to try it out. Write a small program to test it - it's the most effective way to learn. Then, once you know what does happen, you can ask questions about why it happens.

(By the way, you can edit an existing message to fix formatting - you don't need to post another one).

[Anne Saizan]

oky thank you so much..=)
sorry about the code...
i am still new here..=)
bdw thanks..
nice java forum..