R programming error Not enough Java heap space

Question

I have used a function nGrams that does not work. I do not know how to fix the error:

blog2gramfreq <- nGrams(cleanblogs100000, 2) Error in ls(envir = envir, all.names = private) : invalid 'envir' argument Called from: top level Called from: top level Browse[1]>

You can refer the function:

structure(function (this, private = FALSE, ...) 
{
envir <- attr(this, ".env")
ls(envir = envir, all.names = private)
}, export = FALSE, S3class = "Object", modifiers = "public")

Answer 1

Try this, it worked for me:

options(java.parameters="-Xmx4000m")