Give three ways of making a lambda expression that applies the length method to a String (or four if you read Special Topic 19.2).

Data from Special Topic 19.2

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Special Topic 19.2 Method and Constructor References When a lambda expression consists of just one method call, you can use a very concise syntax, called a method reference. A class name followed by a :: symbol and method name is equiva- lent to a lambda expression with parameters "at the right places".