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Lessons
Module 3. Java Professional
Level 20
Introduction to the Apache project
Module 3. Java Professional
Level 20,
Lesson 0
Introduction to Apache Commons Popular Apache Commons Libraries
apache-commons-lang library
Module 3. Java Professional
Level 20,
Lesson 1
Complex equals() method Complex hashCode() method Complex toString() method
StringUtils class from Apache Commons
Module 3. Java Professional
Level 20,
Lesson 2
Introduction to StringUtils StringUtils.isEmpty() and StringUtils.isBlank() StringUtils.equals() StringUtils.compare() Checking if a string contains another substring Working with substrings
ObjectUtils class from Apache Commons
Module 3. Java Professional
Level 20,
Lesson 3
Introduction to the ObjectUtils class ObjectUtils.compare() ObjectUtils.isNotEmpty() java.util.Objects
CollectionUtils class from Apache Commons
Module 3. Java Professional
Level 20,
Lesson 4
Introduction to CollectionUtils Lots of ways to check if a collection is empty Set operations Set operations, great example UnmodifiableCollection class
Useful classes from Apache Commons
Module 3. Java Professional
Level 20,
Lesson 5
List of useful classes
Final draft of module 3
Module 3. Java Professional
Level 20,
Lesson 6
Final draft of module 3
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