samples/mapwith.js

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// Using a Java map with Javascript "with" statement

var map = new java.util.HashMap();
map.put("foo", 34);
map.put("bar", "hello");

var obj = {
    __noSuchProperty__: function(name) {
        return map.get(name);
    }
};

with(obj) {
   print(foo);
   print(bar);
}