KwickClips Java · 39 sec · free
Why did my string stay in small letters?
Short answer. toUpperCase() returns a new string; you must store it back.
What does immutable mean?
Once made, a string can never be changed.
Remember
| Strings never change |
| Store the new string back |
You called to upper case, but the string stayed small. Why? A String is an object, and it is immutable. Methods return a new string. Store it back in s. Two rules. Strings never change. Store the new string back.
This clip is from the full lesson: The String Class and String Methods — 8 minutes, with the tables, the quick answers and the whole lesson in text.
Useful for: CBSE Class 12 Information Technology (802), ICSE Class 10 Computer Applications, ICSE Class 10 Computer Applications, ICSE Class 10 Computer Applications
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