15 maybe you want to take a look java.util.Stack class. it has push, pop methods. and implemented List interface. for shift/unshift, you can reference @Jon's answer. however, …

Feb 2, 2010 · Is ArrayList an array or a list in java? what is the time complexity for the get operation, is it O(n) or O(1)?

Jun 6, 2013 · 1st of all, when you declare a variable in java, you should declare it using Interfaces even if you specify the implementation when instantiating it ArrayList<ArrayList<String>> …

Create a Object of a ArrayList and pass reference to different methods. Example create a ArrayList Object in main class and pass it to addString & display method.

Dec 15, 2014 · By the way, use generics. The list variable should be defined as an List<String> and initialized as an new ArrayList<String>(), or a new ArrayList<>() in Java 7.

You can also create an ArrayList, which is based on the HAS relationship. In this case, you have to write another method to return String instead of override toString method.

Nov 12, 2011 · I'd like to extend ArrayList to add a few methods for a specific class whose instances would be held by the extended ArrayList. A simplified illustrative code sample is …

Mar 8, 2020 · Your method declares that it takes an object of type ArrayList, a class from the Java Collections Framework. The ArrayList class happens to use an array internally, but is not an …

Dec 27, 2010 · In Java the package java.util contains all kinds of data structures that can handle adding and removing items from array-like collections. The classic data structure Stack has …

Jul 27, 2012 · Java Returning method which returns arraylist? Asked 13 years, 2 months ago Modified 3 years, 4 months ago Viewed 381k times