collections Archives - Page 3 of 12

I have an ArrayList, a Collection class of Java, as follows: ArrayList<String> animals = new ArrayList<String>(); animals.add("bat"); animals.add("owl"); animals.add("bat"); animals.add("bat"); As you can ...

May 26, 2022
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Java, Programming

IT Nursery

How to sort an ArrayList in Java [duplicate]

This question already has answers here: Sort ArrayList of custom Objects by property (29 answers) Closed 8 years ago. I have a class ...

May 26, 2022
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Convert JSON to Map

What is the best way to convert a JSON code as this: { "data" : { "field1" : "value1", "field2" : "value2" } ...

May 26, 2022
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Is there a way to get a collection of all the Models in your Rails app?

Is there a way that you can get a collection of all of the Models in your Rails app? Basically, can I do ...

May 26, 2022
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MongoDB Show all contents from all collections

Is it possible to show all collections and its contents in MongoDB? Is the only way to show one by one? 6 Answers ...

May 25, 2022
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Kotlin’s List missing “add”, “remove”, Map missing “put”, etc?

In Java we could do the following public class TempClass { List<Integer> myList = null; void doSomething() { myList = new ArrayList<>(); myList.add(10); ...

May 24, 2022
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