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 vote154 views1 answer
Exceptions in java
Java
1 vote156 views1 answer
Selection Structure and Conditions
Java
1 vote147 views1 answer
Use view binding in fragment
Java
0 vote140 views1 answer
Xml button color not changing
Java
0 vote137 views2 answers
Exponet
Java
0 vote143 views1 answer
How to declare and insert value to arraylist in same line in java
Java
0 vote158 views1 answer
How to check java version by cmd
Java
6 votes144 views6 answers
Java do while loop example
Java
0 vote145 views1 answer
URI/BEE problem no-1101 solution in Java
Java
2 votes143 views1 answer
Encoding UTF
Java