nashorn/samples/uniform_random.js

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// generate/print 100 uniformly distributed random values
// and print summary statistics on it

var DoubleStream = Java.type("java.util.stream.DoubleStream");

// pass script function when a lambda is required
// Math.random passed here for double generator lambda
// print passed to forEach method

DoubleStream
    .generate(Math.random)
    .limit(100)
    .forEach(print);

print(DoubleStream
    .generate(Math.random)
    .limit(100)
    .summaryStatistics());