with statement in Java vs JS (or: the first time I recognize Java being better than JS)

Example.java

/*
In Java, it is possible to drop the `this` in front of instance variables
*/
class Example{
    private int foo;
    public Example(int bar){
        foo = bar;
    }
    public int getFoo(){
        return foo;
    }
}

example.js

/*
In JS, you need to use the `with` statement. Ugly.
Why isn't `this` added to the scope chain?
Right, because someone could always add properties.
*/
var Example = function(bar){
    this.foo = bar;
};

Example.prototype.getFoo = function(){
    with(this){
        return foo;
    }
};