Creating an Arraylist of Objects

Question

How do I fill an ArrayList with objects  with each object inside being different

User · Accepted Answer

ArrayList lt Matrices gt  list   new ArrayList lt Matrices gt     list add  new Matrices 1 1 10     list add  new Matrices 1 2 20

User · Answer

If you want to allow a user to add a bunch of new MyObjects to the list  you can do it with a for loop  Let s say I m creating an ArrayList of Rectangle objects  and each Rectangle has two parameters- length and width     here I will create my ArrayList   ArrayList  lt Rectangle gt  rectangles  new ArrayList  lt  gt  3     int length  int width   for int index  0  index  lt 3 index     JOptionPane showMessageDialog null   Rectangle      index   1     length   JOptionPane showInputDialog  Enter length     width   JOptionPane showInputDialog  Enter width        Now I will create my Rectangle and add it to my rectangles ArrayList    rectangles add new Rectangle length width       This passes the length and width values to the rectangle constructor    which will create a new Rectangle and add it to the ArrayList

User · Answer

How to Creating an Arraylist of Objects  Create an array to store the objects  ArrayList lt MyObject gt  list   new ArrayList lt MyObject gt      In a single step  list add new MyObject  1  2  3      Create a new object and adding it to list    or MyObject myObject   new MyObject  1  2  3     Create a new object  list add myObject      Adding it to the list

[java] Creating an Arraylist of Objects

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