Java Guava | Lists.partition() method with Examples
The Lists.partition() method in Guava Library is used to divide the original list into sublists of the same size. The method accepts two parameters.
For example: If the original list passed as parameter is [a, b, c, d, e] and the partition size is 3, then the sublists yield are as [[a, b, c], [d, e]].
public static <T> List<List<T>> partition(List<T> list, int size)
Parameters: The method accepts two parameters:
- list: The list which is to be divided into sublists based on the partition size.
- size: The desired size of each sublist. The size of the last sublist may be smaller.
Return Value: The method returns the list of consecutive sublists. Each sublist(except possibly the last one) has the size equal to the partition size.
Exception: The method Lists.partition() throws IllegalArgumentException if partition size is non-positive.
Below examples illustrate the implementation of above method:
[1, 2] [3, 4] 
[H, E, L] [L, O, G] [E, E, K] [S]
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