May 16, 2010 · The size of an array can't be modified. If you want a bigger array you have to instantiate a new one. A better solution would be to use an ArrayList which can grow as you need it. The …

Oct 28, 2011 · 44 I am a beginner to java, and need some help. I am trying to convert an Abstract Data type Foo which is an associated list to an Arraylist of the strings B. How do you loop through the list …

ArrayList<String> aList = new ArrayList<String>(); How can I manipulate them if i want to access to a member of ArrayList. I tried converting both arrays to String but it doesn't give solution.

Oct 1, 2008 · So, if you want to be able to add or remove elements from the returned list in your code, you'll need to wrap it in a new ArrayList. Otherwise you'll get an UnsupportedOperationException. …

May 25, 2012 · You can set values at specific array positions. If you know how to do it with one-dimensional arrays then you know how to do it with n-dimensional arrays: There are no n …

In java 6 org.json.JSONArray contains the put method and in java 7 javax.json contains the add method. An example of this using the builder pattern in java 7 looks something like this:

7 An array doesn't have an add method. You assign a value to an element of the array with num[i]=value;.

Feb 15, 2012 · 8 If you are actually using the array as a stack (and thus, will only add or remove items at the top of the stack) then you could keep in another variable the next free index in the array.

You can add integer arrays to an arraylist, but then the arraylist must be defined as:

Instead of using an array, use an implementation of java.util.List such as ArrayList. An ArrayList has an array backend which holds values in a list, but the array size is automatically handles by the list.