Prior versions of Java also lack predefined functional interfaces and first-class functions such as filter and map. Java 8 reduces verbosity largely by introducing lambdas and method references to ...

Assign functions to a variable. Store functions in a data structure. Write functions that return other functions. Pass a function to another function. Call a function returned by another function.

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To build your first Java AWS Lambda function, just create a simple class with an instance method that performs the following functions: Takes a String as an argument. Returns a String. Writes to the ...