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 vote211 views1 answer
How to make an invisiblke button in swing
Java
10 votes189 views3 answers
String to long java
Java
1 vote194 views1 answer
Unsupported Modules Detected
Java
0 vote180 views7 answers
Iptc classification java code example
Java
0 vote232 views1 answer
Get steps counts using pedometer sensor in android
Java
0 vote172 views1 answer
How to assert that an exception is thrown java
Java
0 vote191 views1 answer
Loop an array of objects in java
Java
1 vote211 views2 answers
Convert int to ascii java
Java
20 votes193 views6 answers
Convert char to string java
Java
0 vote205 views1 answer
Android api 21 join list of strings
Java