[Entry] Java Strings: `.valueOf()`

[Dusch4593]

Reason/inspiration (optional)

Create a new term entry for the .valueOf() String method in Java. Be sure to include:

• A "Syntax" section with a ```pseudo code snippet.
• An "Example" section with a ```java snippet.

Please refer to the term entry template, content standards, and markdown style guide when creating the entry.

Entry Type (select all that apply)

New Term for Existing Concept Entry

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