Apex Intermediate Progress | ( Lessons)

Lesson: 038 | containsOnly()

Notes
Video

Notes

In Apex, the containsOnly() method is used to return true if the current String contains characters only from the specified sequence of characters and not any other characters; otherwise, returns false.

Here's an example for true:

String s1 = 'abba';
Boolean b1 = s1.containsOnly('abcd');
System.debug(b1);

Output: true

String s2 = 'abba xyz';
Boolean b2 = s2.containsOnly('abcd');
System.debug(b2);

Output: false

Prev You need to login to have access to the quizzes. Next

Mastered by 33 users.

Apex Intermediate

A. Apex DML Operations (8 lessons)

B. Apex Classes (17 lessons)

C. Apex Triggers (9 lessons)

D. Apex Exceptions (11 lessons)

E. Asynchronous Apex (6 lessons)

F. SOSL (10 lessons)

G. Testing Apex (9 lessons)

H. Apex Fast Recap (142 lessons)

I. Build Apex Coding Skills (64 lessons)

J. Miscellaneous (17 lessons)

You need to complete all the quizzes before certification.

Go to top

Login to your account

Lesson: 038 | containsOnly()

Notes

Apex Intermediate