how to replace a string/word in a text file in groovy

Question

Hello I am using groovy 2.1.5 and I have to write a code which show the contens/files of a directory with a given path then it makes a backup of the file and replace a word/

Answer 1

Refer this answer where patterns are replaced. The same principle can be used to replace strings.

Sample

def copyAndReplaceText(source, dest, Closure replaceText){
    dest.write(replaceText(source.text))
}

def source = new File('source.txt') //Hello World
def dest = new File('dest.txt') //blank

copyAndReplaceText(source, dest) {
    it.replaceAll('World', 'World!!!!!')
}

assert 'Hello World' == source.text
assert 'Hello World!!!!!' == dest.text