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Java Extended
course content

Course Content

Java Extended

Java Extended

1. Deep Java Structure
How does the compiler works?Data transfer in JavaFinal KeywordImporting LibrariesUsing Libraries In Our CodeTernary OperatorEnhanced Switch Statement
2. Methods
What is a Method?Creating Our Own MethodsChallenge: Names Starting with Letter BVoidMethods PracticeMethod Overloading RecursionSorting Even Numbers Challenge
3. String Advanced
Deeper into StringMethod split()Uppercase Even Words ChallengeindexOf() methodCharacter Indices Sum Challengetrim() MethodSubstring First and Last Characters Challenge
4. Classes
What is class?Main Class and MethodAccess modifiersClass CreationCat Meowing ChallengeConstructorTeam Constructor ChallengeMethod toString()Parrot Information Display Challenge
5. Classes Advanced
Complex Classes UsagePet and Owner Relationship ChallengePrivate ModifierAnimal Information Display ChallengeGetter and SetterCountry Information Management ChallengeSummary

bookSubstring First and Last Characters Challenge

Note

To solve this task, you need to remember the methods charAt() and substring(). You can read more about them in the Java Basics course.

Task

Your task is to write a method that returns the substring from the first occurrence of a character to its last occurrence. Then, you need to print the first and last letter of the obtained substring. Write two methods, where one will be used within the other.

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Section 3. Chapter 7
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bookSubstring First and Last Characters Challenge

Note

To solve this task, you need to remember the methods charAt() and substring(). You can read more about them in the Java Basics course.

Task

Your task is to write a method that returns the substring from the first occurrence of a character to its last occurrence. Then, you need to print the first and last letter of the obtained substring. Write two methods, where one will be used within the other.

Switch to desktopSwitch to desktop for real-world practiceContinue from where you are using one of the options below
Everything was clear?

How can we improve it?

Thanks for your feedback!

Section 3. Chapter 7
toggle bottom row

bookSubstring First and Last Characters Challenge

Note

To solve this task, you need to remember the methods charAt() and substring(). You can read more about them in the Java Basics course.

Task

Your task is to write a method that returns the substring from the first occurrence of a character to its last occurrence. Then, you need to print the first and last letter of the obtained substring. Write two methods, where one will be used within the other.

Switch to desktopSwitch to desktop for real-world practiceContinue from where you are using one of the options below
Everything was clear?

How can we improve it?

Thanks for your feedback!

Note

To solve this task, you need to remember the methods charAt() and substring(). You can read more about them in the Java Basics course.

Task

Your task is to write a method that returns the substring from the first occurrence of a character to its last occurrence. Then, you need to print the first and last letter of the obtained substring. Write two methods, where one will be used within the other.

Switch to desktopSwitch to desktop for real-world practiceContinue from where you are using one of the options below
Section 3. Chapter 7
Switch to desktopSwitch to desktop for real-world practiceContinue from where you are using one of the options below
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