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The Java String class contains a length () method that returns the total number of characters a given String contains. This value includes all blanks, spaces, and other special characters.
Use the parse method of another wrapper class. Use the deprecated constructor of the Long class and autobox into a primitive long. Use the parse method of a different wrapper class, such as Integer.
Get a deep dive into using method references in your Java programs, including stream operations, event listeners, and constructors and factories.