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

3 votes307 views2 answers
How to print something on java
Java
1 vote204 views1 answer
Initialize array with values java
Java
63 votes245 views3 answers
Java hello word
Java
0 vote270 views1 answer
Create generator hibernate
Java
1 vote186 views1 answer
Java jlabel border
Java
0 vote195 views1 answer
Check curl version
Java
0 vote236 views1 answer
Using enum values as string literals
Java
1 vote252 views1 answer
Validation dependency in spring boot
Java Spring
0 vote205 views1 answer
Getindexrequest elasticsearch
Java
0 vote206 views1 answer
Java convert string to int and compare
Java