NetBeans gives parsing errors on the use of "Multi-line string literals" (cf. https://wiki.openjdk.java.net/display/Nashorn/Nashorn+extensions ) in Nashorn scripts.

Moreover, because of this, it's impossible to use formatting. For example:

var str = <<EOF
 
This is a string that contains multiple lines
hello
world
That's all!
 
EOF
 
print(str)

is formatted as:

var str = << EOF

        This is a string that contains multiple lines
        hello
        world
        That's all!

        EOF

        print(str)