Thread: Doubt Regarding Printing an Array List

[SIZE="3"]import java.util.ArrayList;
class books
{
	String authour;
	String title;
 
}
 class booktest {
	public static void main(String[] args)
	{
		int x=0;
		ArrayList<books> myList =new ArrayList<books>();
		 books a=new books();
		 myList.add(a);
		 a.authour="welcome";
		 a.title="home";
		 books b=new books();
		 myList.add(b);
		 b.authour="welc";
		 b.title="ho";
		 while(x<2)
			 {
			 	System.out.println(myList.add );//confused how to display the following thing
			 	System.out.println();// how to display the following thing
			 x=x+1;
			 }
			 }
 
}[/SIZE]

My query is how can we able to print the following program.

I used System.out.println(books[x].authour)//i guess it is wrong and it is not compiled too

I tried 15 minutes and get something like this

import java.util.ArrayList;

class books
{
String authour;
String title;

public void print()
{
System.out.println("Author = " + this.authour + ". title = " + this.title);
System.out.println();
}

}
class booktest {
public static void main(String[] args)
{
int x=0;
ArrayList<books> myList =new ArrayList<books>();
books a=new books();
myList.add(a);
a.authour="welcome";
a.title="home";
books b=new books();
myList.add(b);
b.authour="welc";
b.title="ho";
while(x<2)
{
books value = myList.get(x);
value.print();
x=x+1;
}
}

}

If this isn't that u espect please contact with me, maybe I can help u

I appreciate your work.You have invoked method print and done it i guess.Thanks


Well is it possible to directly provide arraylist in while statement

while(x<2)

{

System.out.println(myList.add )//i mean here without invoking method print
System.out.println();// how to display the following thing
x=x+1;
}

I don't know but I tried this method but it didn't work
I used the myList.get(x) method but printed something like address.
My advice write code in the classes how u can. And declare private everything u can.
Maybe there is another solution of your problem but I don't know I am beginner

Are you just trying to print the contents of the ArrayList? You can use a for loop to do so:

for ( int i = 0; i < myList.size(); i++ ){
    System.out.println(myList.get(i).author + " " myList.get(i).title);
}

An alternative way to do this is to 'print the object', overriding the toString() method of you books class

class books
{
	String authour;
	String title;
	@Override public String toString(){
            return author + " " + title;
        }
}
....
for ( int i = 0; i < myList.size(); i++ ){
    System.out.println(myList.get(i));
}