Creating a 2d arraylist in java

2d arraylist in java

int vertexCount = 3;
ArrayList<ArrayList<Integer>> graph = new ArrayList<>(vertexCount);
//Next, we'll initialize each element of ArrayList with another ArrayList:

for(int i=0; i < vertexCount; i++) {
    graph.add(new ArrayList());
}

Creating a 2d arraylist in java

List<List<String>> listOfLists = new ArrayList<List<String>>(size); 
for(int i=0; i<size; i++) {
	listOfLists.add(new ArrayList<String>());
}

Source: stackoverflow.com

How to create a 2d arraylist java

ArrayList<ArrayList<Object>> a = new ArrayList<ArrayList<Object>>();

Similar codes

0 vote332 views1 answer
Connect 3 game android studio not working play agin
Java
0 vote319 views1 answer
Exitonclose swing
Java
-1 vote271 views1 answer
Date to string java
Java
0 vote327 views2 answers
Find power of number in method java
Java
9 votes324 views5 answers
Random between two numbers java
Java
10 votes340 views2 answers
How to substring in java
Java
5 votes286 views1 answer
Insert string in string java
Java
1 vote306 views1 answer
Error when making java variable
Java
1 vote285 views1 answer
Java create list of 1 element
Java
0 vote380 views1 answer
Generic method lambda java
Java