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

1 vote109 views1 answer
How to read file from assets folder in android
Java
1 vote120 views1 answer
Java elapsedTime
Java
1 vote107 views1 answer
How to set list data to android spinner
Java
0 vote124 views2 answers
My maven project give error when adding javax.xml.bind dependency
Java
6 votes112 views1 answer
Arrays sort 2d array java
Java
5 votes207 views1 answer
Declare function in java
Java
0 vote119 views1 answer
How does plus works in Java
Java
0 vote108 views1 answer
Procedural programming Java code example
Java
15 votes116 views6 answers
Convert array to list java
Java
1 vote113 views1 answer
Java transform hashmap to list
Java