samples/uniqs.js

/*
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 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
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// Usage: jjs uniqs.js -- <file>
// omit repeated lines and print unique lines
// But this version uses Stream API

if (arguments.length < 1) {
    print("Usage: jjs uniqs.js -- <file>");
    exit(1);
}

var Files = Java.type("java.nio.file.Files");
var FileSystems = Java.type("java.nio.file.FileSystems");
print('Unique lines:',
   Files
    .lines(FileSystems.default.getPath(arguments[0]))
    .distinct()
    .peek(print)
    .count());