Let's say my original Map contains the following:And I want to create a reversed Map containing the following:
As per below code, hashmap initial dafault capacity is 16 and LF is 0.75, so when I enter 13th element then rehashing should occur and because I have provided a constant hashcode, it internally maintain a linked list to maintain an insertion order. So, till 10th elements it is working...
Here's a minimal example of the code I'm working with:The compiler output is:I have found that this can be worked around by replacing t -> t with Function.identity() or (SomeEnum t) -> t, but I'm not understanding why this is the case. What limitation in javac is causing this behavior?
I have a collection like : List<List<Object>> firstListI want to group together a similar list of pattern : List<List<Object>> secondList but grouped by indexes.
I know that using the "+" concatenation operator for building strings is very inefficient, and that is why it is recommended to use the StringBuilder class, but I was wondering if this kind of pattern is inefficient too?
I encountered with the case when I need to convert List<Book> to Map<String, Book> and the only solutions I can find is how to do Map<String, List<Book>>.
I am trying to implement the function:For example if I have Map<String, List<Integer> > ,
I have a class Values:And a list of multiple maps of type Map<String, Values>There could be any number of maps and any number of entries inside the maps, but the keys for the maps are always the same, only the values can differ. My example contains only 2 maps and...
Given a list of items with properties, I am trying to get the last item to appear with a maximum value of said property.
Here's my code as per now.My colleague writes realy nice code using java-stream api. I tried to rewrite it as one streaming statement, but got stuck.