Singleton and Unmodifiable Collections and Maps,You can create singleton sets, lists, and maps and unmodifiable sets, lists, and maps using the static methods in the Collections cl...

Case Study: Occurrences of Words,This case study writes a program that counts the occurrences of words in a text and displays the words and their occurrences in alphabetical order ...

Maps,You can create a map using one of its three concrete classes: HashMap, LinkedHashMap, or TreeMap. A map is a container object that stores a collection of key/value pairs. It e...

Case Study: Counting Keywords,This section presents an application that counts the number of the keywords in a Java source file. For each word in a Java source file, we need to det...

Comparing the Performance of Sets and Lists,Sets are more efficient than lists for storing nonduplicate elements. Lists are useful for accessing elements through the index. The ele...

Throwing a javelin and finding where it lands,Originally published on peateasea.de. As part of tutoring physics and maths to high school students, I sometimes write up deep-dive ex...

Sets - HashSet, LinkedHashSet, and TreeSet.,You can create a set using one of its three concrete classes: HashSet, LinkedHashSet, or TreeSet. The Set interface extends the Collecti...

How to Handle Frames and Windows in Selenium WebDriver #InterviewQuestion, SeleniumJavaQuestions (3 Part Series) 1 What is the Page Object Model (POM), and how does it benefit Sele...

What is the Page Object Model (POM), and how does it benefit Selenium automation testing? #InterviewQuestion, SeleniumJavaQuestions (3 Part Series) 1 What is the Page Object Model ...

Linear Regression, Regression: Supervised Machine Learning, What is Regression? Definition and Purpose Regression is a statistical method used in machine learning and data science ...

13-TreeSet和TreeMap基本介绍 介绍汇总： TreeSet基本介绍 TreeMap基本介绍 1-TreeSet基本介绍 TreeSet 类用于存储一组对象，并将对象按照自然规则（实现 Comparator 接口的）或者指定 Comparat...

Sets and Maps,A set is an efficient data structure for storing and processing nonduplicate elements. A map is like a dictionary that provides a quick lookup to retrieve a value usi...